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Merge branch 'master' into clang-18-ci

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Alexey Milovidov 2024-05-06 02:51:58 +02:00 committed by GitHub
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8
.github/PULL_REQUEST_TEMPLATE.md vendored
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@ -41,8 +41,9 @@ At a minimum, the following information should be added (but add more as needed)
> Information about CI checks: https://clickhouse.com/docs/en/development/continuous-integration/
---
### Modify your CI run:
<details>
<summary>Modify your CI run</summary>
**NOTE:** If your merge the PR with modified CI you **MUST KNOW** what you are doing
**NOTE:** Checked options will be applied if set before CI RunConfig/PrepareRunConfig step
@ -56,6 +57,7 @@ At a minimum, the following information should be added (but add more as needed)
- [ ] <!---ci_include_asan--> All with ASAN
- [ ] <!---ci_include_tsan--> All with TSAN
- [ ] <!---ci_include_analyzer--> All with Analyzer
- [ ] <!---ci_include_azure --> All with Azure
- [ ] <!---ci_include_KEYWORD--> Add your option here
#### Exclude tests:
@ -82,3 +84,5 @@ At a minimum, the following information should be added (but add more as needed)
- [ ] <!---batch_1--> 2
- [ ] <!---batch_2--> 3
- [ ] <!---batch_3--> 4
<details>

2
.github/workflows/debug.yml vendored
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@ -8,4 +8,4 @@ jobs:
DebugInfo:
runs-on: ubuntu-latest
steps:
- uses: hmarr/debug-action@a701ed95a46e6f2fb0df25e1a558c16356fae35a
- uses: hmarr/debug-action@f7318c783045ac39ed9bb497e22ce835fdafbfe6

58
.github/workflows/master.yml vendored
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@ -16,7 +16,7 @@ jobs:
data: ${{ steps.runconfig.outputs.CI_DATA }}
steps:
- name: DebugInfo
uses: hmarr/debug-action@a701ed95a46e6f2fb0df25e1a558c16356fae35a
uses: hmarr/debug-action@f7318c783045ac39ed9bb497e22ce835fdafbfe6
- name: Check out repository code
uses: ClickHouse/checkout@v1
with:
@ -59,16 +59,17 @@ jobs:
uses: ./.github/workflows/reusable_docker.yml
with:
data: ${{ needs.RunConfig.outputs.data }}
StyleCheck:
needs: [RunConfig, BuildDockers]
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Style check
runner_type: style-checker
data: ${{ needs.RunConfig.outputs.data }}
run_command: |
python3 style_check.py --no-push
# Tested in MQ
# StyleCheck:
# needs: [RunConfig, BuildDockers]
# if: ${{ !failure() && !cancelled() }}
# uses: ./.github/workflows/reusable_test.yml
# with:
# test_name: Style check
# runner_type: style-checker
# data: ${{ needs.RunConfig.outputs.data }}
# run_command: |
# python3 style_check.py --no-push
CompatibilityCheckX86:
needs: [RunConfig, BuilderDebRelease]
if: ${{ !failure() && !cancelled() }}
@ -238,15 +239,14 @@ jobs:
build_name: binary_riscv64
data: ${{ needs.RunConfig.outputs.data }}
checkout_depth: 0
# disabled because s390x refused to build in the migration to OpenSSL
# BuilderBinS390X:
# needs: [RunConfig, BuilderDebRelease]
# if: ${{ !failure() && !cancelled() }}
# uses: ./.github/workflows/reusable_build.yml
# with:
# build_name: binary_s390x
# data: ${{ needs.RunConfig.outputs.data }}
# checkout_depth: 0
BuilderBinS390X:
needs: [RunConfig, BuilderDebRelease]
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_build.yml
with:
build_name: binary_s390x
data: ${{ needs.RunConfig.outputs.data }}
checkout_depth: 0
############################################################################################
##################################### Docker images #######################################
############################################################################################
@ -297,7 +297,7 @@ jobs:
- BuilderBinFreeBSD
- BuilderBinPPC64
- BuilderBinRISCV64
# - BuilderBinS390X # disabled because s390x refused to build in the migration to OpenSSL
- BuilderBinS390X
- BuilderBinAmd64Compat
- BuilderBinAarch64V80Compat
- BuilderBinClangTidy
@ -447,6 +447,14 @@ jobs:
test_name: Stateless tests (debug)
runner_type: func-tester
data: ${{ needs.RunConfig.outputs.data }}
FunctionalStatelessTestAsanAzure:
needs: [RunConfig, BuilderDebAsan]
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Stateless tests (azure, asan)
runner_type: func-tester
data: ${{ needs.RunConfig.outputs.data }}
##############################################################################################
############################ FUNCTIONAl STATEFUL TESTS #######################################
##############################################################################################
@ -597,6 +605,14 @@ jobs:
test_name: Stress test (tsan)
runner_type: stress-tester
data: ${{ needs.RunConfig.outputs.data }}
StressTestTsanAzure:
needs: [RunConfig, BuilderDebTsan]
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Stress test (azure, tsan)
runner_type: stress-tester
data: ${{ needs.RunConfig.outputs.data }}
StressTestMsan:
needs: [RunConfig, BuilderDebMsan]
if: ${{ !failure() && !cancelled() }}

6
.github/workflows/pull_request.yml vendored
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@ -22,7 +22,7 @@ jobs:
data: ${{ steps.runconfig.outputs.CI_DATA }}
steps:
- name: DebugInfo
uses: hmarr/debug-action@a701ed95a46e6f2fb0df25e1a558c16356fae35a
uses: hmarr/debug-action@f7318c783045ac39ed9bb497e22ce835fdafbfe6
- name: Check out repository code
uses: ClickHouse/checkout@v1
with:
@ -158,7 +158,7 @@ jobs:
#
FinishCheck:
if: ${{ !failure() && !cancelled() }}
needs: [Tests_1, Tests_2, Builds_1_Report, Builds_2_Report]
needs: [RunConfig, BuildDockers, StyleCheck, FastTest, Builds_1, Builds_2, Builds_1_Report, Builds_2_Report, Tests_1, Tests_2]
runs-on: [self-hosted, style-checker]
steps:
- name: Check out repository code
@ -171,7 +171,7 @@ jobs:
- name: Finish label
run: |
cd "$GITHUB_WORKSPACE/tests/ci"
python3 finish_check.py
python3 finish_check.py ${{ (contains(needs.*.result, 'failure') && github.event_name == 'merge_group') && '--pipeline-failure' || '' }}
- name: Auto merge if approved
if: ${{ github.event_name != 'merge_group' }}
run: |

2
.github/workflows/reusable_simple_job.yml vendored
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@ -63,7 +63,7 @@ jobs:
GITHUB_JOB_OVERRIDDEN: ${{inputs.test_name}}
steps:
- name: DebugInfo
uses: hmarr/debug-action@a701ed95a46e6f2fb0df25e1a558c16356fae35a
uses: hmarr/debug-action@f7318c783045ac39ed9bb497e22ce835fdafbfe6
- name: Check out repository code
uses: ClickHouse/checkout@v1
with:

2
.gitmessage
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@ -16,7 +16,7 @@
#ci_set_reduced
#ci_set_arm
#ci_set_integration
#ci_set_analyzer
#ci_set_old_analyzer
## To run specified job in CI:
#job_<JOB NAME>

171
CHANGELOG.md
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@ -1,4 +1,5 @@
### Table of Contents
**[ClickHouse release v24.4, 2024-04-30](#244)**<br/>
**[ClickHouse release v24.3 LTS, 2024-03-26](#243)**<br/>
**[ClickHouse release v24.2, 2024-02-29](#242)**<br/>
**[ClickHouse release v24.1, 2024-01-30](#241)**<br/>
@ -6,6 +7,167 @@
# 2024 Changelog
### <a id="244"></a> ClickHouse release 24.4, 2024-04-30
#### Upgrade Notes
* `clickhouse-odbc-bridge` and `clickhouse-library-bridge` are now separate packages. This closes [#61677](https://github.com/ClickHouse/ClickHouse/issues/61677). [#62114](https://github.com/ClickHouse/ClickHouse/pull/62114) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Don't allow to set max_parallel_replicas (for the experimental parallel reading from replicas) to `0` as it doesn't make sense. Closes [#60140](https://github.com/ClickHouse/ClickHouse/issues/60140). [#61201](https://github.com/ClickHouse/ClickHouse/pull/61201) ([Kruglov Pavel](https://github.com/Avogar)).
* Remove support for `INSERT WATCH` query (part of the deprecated `LIVE VIEW` feature). [#62382](https://github.com/ClickHouse/ClickHouse/pull/62382) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Removed the `optimize_monotonous_functions_in_order_by` setting. [#63004](https://github.com/ClickHouse/ClickHouse/pull/63004) ([Raúl Marín](https://github.com/Algunenano)).
* Remove experimental tag from the `Replicated` database engine. Now it is in Beta stage. [#62937](https://github.com/ClickHouse/ClickHouse/pull/62937) ([Justin de Guzman](https://github.com/justindeguzman)).
#### New Feature
* Support recursive CTEs. [#62074](https://github.com/ClickHouse/ClickHouse/pull/62074) ([Maksim Kita](https://github.com/kitaisreal)).
* Support `QUALIFY` clause. Closes [#47819](https://github.com/ClickHouse/ClickHouse/issues/47819). [#62619](https://github.com/ClickHouse/ClickHouse/pull/62619) ([Maksim Kita](https://github.com/kitaisreal)).
* Table engines are grantable now, and it won't affect existing users behavior. [#60117](https://github.com/ClickHouse/ClickHouse/pull/60117) ([jsc0218](https://github.com/jsc0218)).
* Added a rewritable S3 disk which supports INSERT operations and does not require locally stored metadata. [#61116](https://github.com/ClickHouse/ClickHouse/pull/61116) ([Julia Kartseva](https://github.com/jkartseva)). The main use case is for system tables.
* The syntax highlighting while typing in the client will work on the syntax level (previously, it worked on the lexer level). [#62123](https://github.com/ClickHouse/ClickHouse/pull/62123) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Supports dropping multiple tables at the same time like `DROP TABLE a, b, c`;. [#58705](https://github.com/ClickHouse/ClickHouse/pull/58705) ([zhongyuankai](https://github.com/zhongyuankai)).
* Modifying memory table settings through `ALTER MODIFY SETTING` is now supported. Example: `ALTER TABLE memory MODIFY SETTING min_rows_to_keep = 100, max_rows_to_keep = 1000;`. [#62039](https://github.com/ClickHouse/ClickHouse/pull/62039) ([zhongyuankai](https://github.com/zhongyuankai)).
* Added `role` query parameter to the HTTP interface. It works similarly to `SET ROLE x`, applying the role before the statement is executed. This allows for overcoming the limitation of the HTTP interface, as multiple statements are not allowed, and it is not possible to send both `SET ROLE x` and the statement itself at the same time. It is possible to set multiple roles that way, e.g., `?role=x&role=y`, which will be an equivalent of `SET ROLE x, y`. [#62669](https://github.com/ClickHouse/ClickHouse/pull/62669) ([Serge Klochkov](https://github.com/slvrtrn)).
* Add `SYSTEM UNLOAD PRIMARY KEY` to free up memory usage for a table's primary key. [#62738](https://github.com/ClickHouse/ClickHouse/pull/62738) ([Pablo Marcos](https://github.com/pamarcos)).
* Added `value1`, `value2`, ..., `value10` columns to `system.text_log`. These columns contain values that were used to format the message. [#59619](https://github.com/ClickHouse/ClickHouse/pull/59619) ([Alexey Katsman](https://github.com/alexkats)).
* Added persistent virtual column `_block_offset` which stores original number of row in block that was assigned at insert. Persistence of column `_block_offset` can be enabled by the MergeTree setting `enable_block_offset_column`. Added virtual column`_part_data_version` which contains either min block number or mutation version of part. Persistent virtual column `_block_number` is not considered experimental anymore. [#60676](https://github.com/ClickHouse/ClickHouse/pull/60676) ([Anton Popov](https://github.com/CurtizJ)).
* Add a setting `input_format_json_throw_on_bad_escape_sequence`, disabling it allows saving bad escape sequences in JSON input formats. [#61889](https://github.com/ClickHouse/ClickHouse/pull/61889) ([Kruglov Pavel](https://github.com/Avogar)).
#### Performance Improvement
* JOIN filter push down improvements using equivalent sets. [#61216](https://github.com/ClickHouse/ClickHouse/pull/61216) ([Maksim Kita](https://github.com/kitaisreal)).
* Convert OUTER JOIN to INNER JOIN optimization if the filter after JOIN always filters default values. Optimization can be controlled with setting `query_plan_convert_outer_join_to_inner_join`, enabled by default. [#62907](https://github.com/ClickHouse/ClickHouse/pull/62907) ([Maksim Kita](https://github.com/kitaisreal)).
* Improvement for AWS S3. Client has to send header 'Keep-Alive: timeout=X' to the server. If a client receives a response from the server with that header, client has to use the value from the server. Also for a client it is better not to use a connection which is nearly expired in order to avoid connection close race. [#62249](https://github.com/ClickHouse/ClickHouse/pull/62249) ([Sema Checherinda](https://github.com/CheSema)).
* Reduce overhead of the mutations for SELECTs (v2). [#60856](https://github.com/ClickHouse/ClickHouse/pull/60856) ([Azat Khuzhin](https://github.com/azat)).
* More frequently invoked functions in PODArray are now force-inlined. [#61144](https://github.com/ClickHouse/ClickHouse/pull/61144) ([李扬](https://github.com/taiyang-li)).
* Speed up parsing of JSON by skipping the rest of the object when all required columns are read. [#62210](https://github.com/ClickHouse/ClickHouse/pull/62210) ([lgbo](https://github.com/lgbo-ustc)).
* Improve trivial insert select from files in file/s3/hdfs/url/... table functions. Add separate max_parsing_threads setting to control the number of threads used in parallel parsing. [#62404](https://github.com/ClickHouse/ClickHouse/pull/62404) ([Kruglov Pavel](https://github.com/Avogar)).
* Functions `to_utc_timestamp` and `from_utc_timestamp` are now about 2x faster. [#62583](https://github.com/ClickHouse/ClickHouse/pull/62583) ([KevinyhZou](https://github.com/KevinyhZou)).
* Functions `parseDateTimeOrNull`, `parseDateTimeOrZero`, `parseDateTimeInJodaSyntaxOrNull` and `parseDateTimeInJodaSyntaxOrZero` now run significantly faster (10x - 1000x) when the input contains mostly non-parseable values. [#62634](https://github.com/ClickHouse/ClickHouse/pull/62634) ([LiuNeng](https://github.com/liuneng1994)).
* SELECTs against `system.query_cache` are now noticeably faster when the query cache contains lots of entries (e.g. more than 100.000). [#62671](https://github.com/ClickHouse/ClickHouse/pull/62671) ([Robert Schulze](https://github.com/rschu1ze)).
* Less contention in filesystem cache (part 3): execute removal from filesystem without lock on space reservation attempt. [#61163](https://github.com/ClickHouse/ClickHouse/pull/61163) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Speed up dynamic resize of filesystem cache. [#61723](https://github.com/ClickHouse/ClickHouse/pull/61723) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Dictionary source with `INVALIDATE_QUERY` is not reloaded twice on startup. [#62050](https://github.com/ClickHouse/ClickHouse/pull/62050) ([vdimir](https://github.com/vdimir)).
* Fix an issue where when a redundant `= 1` or `= 0` is added after a boolean expression involving the primary key, the primary index is not used. For example, both `SELECT * FROM <table> WHERE <primary-key> IN (<value>) = 1` and `SELECT * FROM <table> WHERE <primary-key> NOT IN (<value>) = 0` will both perform a full table scan, when the primary index can be used. [#62142](https://github.com/ClickHouse/ClickHouse/pull/62142) ([josh-hildred](https://github.com/josh-hildred)).
* Return stream of chunks from `system.remote_data_paths` instead of accumulating the whole result in one big chunk. This allows to consume less memory, show intermediate progress and cancel the query. [#62613](https://github.com/ClickHouse/ClickHouse/pull/62613) ([Alexander Gololobov](https://github.com/davenger)).
#### Experimental Feature
* Support parallel write buffer for Azure Blob Storage managed by setting `azure_allow_parallel_part_upload`. [#62534](https://github.com/ClickHouse/ClickHouse/pull/62534) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Userspace page cache works with static web storage (`disk(type = web)`) now. Use client setting `use_page_cache_for_disks_without_file_cache=1` to enable. [#61911](https://github.com/ClickHouse/ClickHouse/pull/61911) ([Michael Kolupaev](https://github.com/al13n321)).
* Don't treat Bool and number variants as suspicious in the `Variant` type. [#61999](https://github.com/ClickHouse/ClickHouse/pull/61999) ([Kruglov Pavel](https://github.com/Avogar)).
* Implement better conversion from String to `Variant` using parsing. [#62005](https://github.com/ClickHouse/ClickHouse/pull/62005) ([Kruglov Pavel](https://github.com/Avogar)).
* Support `Variant` in JSONExtract functions. [#62014](https://github.com/ClickHouse/ClickHouse/pull/62014) ([Kruglov Pavel](https://github.com/Avogar)).
* Mark type `Variant` as comparable so it can be used in primary key. [#62693](https://github.com/ClickHouse/ClickHouse/pull/62693) ([Kruglov Pavel](https://github.com/Avogar)).
#### Improvement
* For convenience purpose, `SELECT * FROM numbers() `will work in the same way as `SELECT * FROM system.numbers` - without a limit. [#61969](https://github.com/ClickHouse/ClickHouse/pull/61969) ([YenchangChan](https://github.com/YenchangChan)).
* Introduce separate consumer/producer tags for the Kafka configuration. This avoids warnings from librdkafka (a bad C library with a lot of bugs) that consumer properties were specified for producer instances and vice versa (e.g. `Configuration property session.timeout.ms is a consumer property and will be ignored by this producer instance`). Closes: [#58983](https://github.com/ClickHouse/ClickHouse/issues/58983). [#58956](https://github.com/ClickHouse/ClickHouse/pull/58956) ([Aleksandr Musorin](https://github.com/AVMusorin)).
* Functions `date_diff` and `age` now calculate their result at nanosecond instead of microsecond precision. They now also offer `nanosecond` (or `nanoseconds` or `ns`) as a possible value for the `unit` parameter. [#61409](https://github.com/ClickHouse/ClickHouse/pull/61409) ([Austin Kothig](https://github.com/kothiga)).
* Added nano-, micro-, milliseconds unit for `date_trunc`. [#62335](https://github.com/ClickHouse/ClickHouse/pull/62335) ([Misz606](https://github.com/Misz606)).
* Reload certificate chain during certificate reload. [#61671](https://github.com/ClickHouse/ClickHouse/pull/61671) ([Pervakov Grigorii](https://github.com/GrigoryPervakov)).
* Try to prevent an error [#60432](https://github.com/ClickHouse/ClickHouse/issues/60432) by not allowing a table to be attached if there is an active replica for that replica path. [#61876](https://github.com/ClickHouse/ClickHouse/pull/61876) ([Arthur Passos](https://github.com/arthurpassos)).
* Implement support for `input` for `clickhouse-local`. [#61923](https://github.com/ClickHouse/ClickHouse/pull/61923) ([Azat Khuzhin](https://github.com/azat)).
* `Join` table engine with strictness `ANY` is consistent after reload. When several rows with the same key are inserted, the first one will have higher priority (before, it was chosen randomly upon table loading). close [#51027](https://github.com/ClickHouse/ClickHouse/issues/51027). [#61972](https://github.com/ClickHouse/ClickHouse/pull/61972) ([vdimir](https://github.com/vdimir)).
* Automatically infer Nullable column types from Apache Arrow schema. [#61984](https://github.com/ClickHouse/ClickHouse/pull/61984) ([Maksim Kita](https://github.com/kitaisreal)).
* Allow to cancel parallel merge of aggregate states during aggregation. Example: `uniqExact`. [#61992](https://github.com/ClickHouse/ClickHouse/pull/61992) ([Maksim Kita](https://github.com/kitaisreal)).
* Use `system.keywords` to fill in the suggestions and also use them in the all places internally. [#62000](https://github.com/ClickHouse/ClickHouse/pull/62000) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* `OPTIMIZE FINAL` for `ReplicatedMergeTree` now will wait for currently active merges to finish and then reattempt to schedule a final merge. This will put it more in line with ordinary `MergeTree` behaviour. [#62067](https://github.com/ClickHouse/ClickHouse/pull/62067) ([Nikita Taranov](https://github.com/nickitat)).
* While read data from a hive text file, it would use the first line of hive text file to resize of number of input fields, and sometimes the fields number of first line is not matched with the hive table defined , such as the hive table is defined to have 3 columns, like `test_tbl(a Int32, b Int32, c Int32)`, but the first line of text file only has 2 fields, and in this suitation, the input fields will be resized to 2, and if the next line of the text file has 3 fields, then the third field can not be read but set a default value 0, which is not right. [#62086](https://github.com/ClickHouse/ClickHouse/pull/62086) ([KevinyhZou](https://github.com/KevinyhZou)).
* `CREATE AS` copies the table's comment. [#62117](https://github.com/ClickHouse/ClickHouse/pull/62117) ([Pablo Marcos](https://github.com/pamarcos)).
* Add query progress to table zookeeper. [#62152](https://github.com/ClickHouse/ClickHouse/pull/62152) ([JackyWoo](https://github.com/JackyWoo)).
* Add ability to turn on trace collector (Real and CPU) server-wide. [#62189](https://github.com/ClickHouse/ClickHouse/pull/62189) ([alesapin](https://github.com/alesapin)).
* Added setting `lightweight_deletes_sync` (default value: 2 - wait all replicas synchronously). It is similar to setting `mutations_sync` but affects only behaviour of lightweight deletes. [#62195](https://github.com/ClickHouse/ClickHouse/pull/62195) ([Anton Popov](https://github.com/CurtizJ)).
* Distinguish booleans and integers while parsing values for custom settings: `SET custom_a = true; SET custom_b = 1;`. [#62206](https://github.com/ClickHouse/ClickHouse/pull/62206) ([Vitaly Baranov](https://github.com/vitlibar)).
* Support S3 access through AWS Private Link Interface endpoints. Closes [#60021](https://github.com/ClickHouse/ClickHouse/issues/60021), [#31074](https://github.com/ClickHouse/ClickHouse/issues/31074) and [#53761](https://github.com/ClickHouse/ClickHouse/issues/53761). [#62208](https://github.com/ClickHouse/ClickHouse/pull/62208) ([Arthur Passos](https://github.com/arthurpassos)).
* Do not create a directory for UDF in clickhouse-client if it does not exist. This closes [#59597](https://github.com/ClickHouse/ClickHouse/issues/59597). [#62366](https://github.com/ClickHouse/ClickHouse/pull/62366) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* The query cache now no longer caches results of queries against system tables (`system.*`, `information_schema.*`, `INFORMATION_SCHEMA.*`). [#62376](https://github.com/ClickHouse/ClickHouse/pull/62376) ([Robert Schulze](https://github.com/rschu1ze)).
* `MOVE PARTITION TO TABLE` query can be delayed or can throw `TOO_MANY_PARTS` exception to avoid exceeding limits on the part count. The same settings and limits are applied as for the`INSERT` query (see `max_parts_in_total`, `parts_to_delay_insert`, `parts_to_throw_insert`, `inactive_parts_to_throw_insert`, `inactive_parts_to_delay_insert`, `max_avg_part_size_for_too_many_parts`, `min_delay_to_insert_ms` and `max_delay_to_insert` settings). [#62420](https://github.com/ClickHouse/ClickHouse/pull/62420) ([Sergei Trifonov](https://github.com/serxa)).
* Changed the default installation directory on macOS from `/usr/bin` to `/usr/local/bin`. This is necessary because Apple's System Integrity Protection introduced with macOS El Capitan (2015) prevents writing into `/usr/bin`, even with `sudo`. [#62489](https://github.com/ClickHouse/ClickHouse/pull/62489) ([haohang](https://github.com/yokofly)).
* Make transform always return the first match. [#62518](https://github.com/ClickHouse/ClickHouse/pull/62518) ([Raúl Marín](https://github.com/Algunenano)).
* Added the missing `hostname` column to system table `blob_storage_log`. [#62456](https://github.com/ClickHouse/ClickHouse/pull/62456) ([Jayme Bird](https://github.com/jaymebrd)).
* For consistency with other system tables, `system.backup_log` now has a column `event_time`. [#62541](https://github.com/ClickHouse/ClickHouse/pull/62541) ([Jayme Bird](https://github.com/jaymebrd)).
* Table `system.backup_log` now has the "default" sorting key which is `event_date, event_time`, the same as for other `_log` table engines. [#62667](https://github.com/ClickHouse/ClickHouse/pull/62667) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Avoid evaluating table DEFAULT expressions while executing `RESTORE`. [#62601](https://github.com/ClickHouse/ClickHouse/pull/62601) ([Vitaly Baranov](https://github.com/vitlibar)).
* S3 storage and backups also need the same default keep alive settings as s3 disk. [#62648](https://github.com/ClickHouse/ClickHouse/pull/62648) ([Sema Checherinda](https://github.com/CheSema)).
* Add librdkafka's (that infamous C library, which has a lot of bugs) client identifier to log messages to be able to differentiate log messages from different consumers of a single table. [#62813](https://github.com/ClickHouse/ClickHouse/pull/62813) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Allow special macros `{uuid}` and `{database}` in a Replicated database ZooKeeper path. [#62818](https://github.com/ClickHouse/ClickHouse/pull/62818) ([Vitaly Baranov](https://github.com/vitlibar)).
* Allow quota key with different auth scheme in HTTP requests. [#62842](https://github.com/ClickHouse/ClickHouse/pull/62842) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Reduce the verbosity of command line argument `--help` in `clickhouse client` and `clickhouse local`. The previous output is now generated by `--help --verbose`. [#62973](https://github.com/ClickHouse/ClickHouse/pull/62973) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* `log_bin_use_v1_row_events` was removed in MySQL 8.3, and we adjust the experimental `MaterializedMySQL` engine for it [#60479](https://github.com/ClickHouse/ClickHouse/issues/60479). [#63101](https://github.com/ClickHouse/ClickHouse/pull/63101) ([Eugene Klimov](https://github.com/Slach)). Author: Nikolay Yankin.
#### Build/Testing/Packaging Improvement
* Vendor in Rust dependencies, so the Rust code (that we use for minor features for hype and lulz) can be built in a sane way, similarly to C++. [#62297](https://github.com/ClickHouse/ClickHouse/pull/62297) ([Raúl Marín](https://github.com/Algunenano)).
* ClickHouse now uses OpenSSL 3.2 instead of BoringSSL. [#59870](https://github.com/ClickHouse/ClickHouse/pull/59870) ([Robert Schulze](https://github.com/rschu1ze)). Note that OpenSSL has generally worse engineering culture (such as non-zero number of sanitizer reports, that we had to patch, a complex build system with generated files, etc.) but has better compatibility.
* Ignore DROP queries in stress test with 1/2 probability, use TRUNCATE instead of ignoring DROP in upgrade check for Memory/JOIN tables. [#61476](https://github.com/ClickHouse/ClickHouse/pull/61476) ([Kruglov Pavel](https://github.com/Avogar)).
* Remove from the Keeper Docker image the volumes at /etc/clickhouse-keeper and /var/log/clickhouse-keeper. [#61683](https://github.com/ClickHouse/ClickHouse/pull/61683) ([Tristan](https://github.com/Tristan971)).
* Add tests for all issues which are no longer relevant with Analyzer being enabled by default. Closes: [#55794](https://github.com/ClickHouse/ClickHouse/issues/55794) Closes: [#49472](https://github.com/ClickHouse/ClickHouse/issues/49472) Closes: [#44414](https://github.com/ClickHouse/ClickHouse/issues/44414) Closes: [#13843](https://github.com/ClickHouse/ClickHouse/issues/13843) Closes: [#55803](https://github.com/ClickHouse/ClickHouse/issues/55803) Closes: [#48308](https://github.com/ClickHouse/ClickHouse/issues/48308) Closes: [#45535](https://github.com/ClickHouse/ClickHouse/issues/45535) Closes: [#44365](https://github.com/ClickHouse/ClickHouse/issues/44365) Closes: [#44153](https://github.com/ClickHouse/ClickHouse/issues/44153) Closes: [#42399](https://github.com/ClickHouse/ClickHouse/issues/42399) Closes: [#27115](https://github.com/ClickHouse/ClickHouse/issues/27115) Closes: [#23162](https://github.com/ClickHouse/ClickHouse/issues/23162) Closes: [#15395](https://github.com/ClickHouse/ClickHouse/issues/15395) Closes: [#15411](https://github.com/ClickHouse/ClickHouse/issues/15411) Closes: [#14978](https://github.com/ClickHouse/ClickHouse/issues/14978) Closes: [#17319](https://github.com/ClickHouse/ClickHouse/issues/17319) Closes: [#11813](https://github.com/ClickHouse/ClickHouse/issues/11813) Closes: [#13210](https://github.com/ClickHouse/ClickHouse/issues/13210) Closes: [#23053](https://github.com/ClickHouse/ClickHouse/issues/23053) Closes: [#37729](https://github.com/ClickHouse/ClickHouse/issues/37729) Closes: [#32639](https://github.com/ClickHouse/ClickHouse/issues/32639) Closes: [#9954](https://github.com/ClickHouse/ClickHouse/issues/9954) Closes: [#41964](https://github.com/ClickHouse/ClickHouse/issues/41964) Closes: [#54317](https://github.com/ClickHouse/ClickHouse/issues/54317) Closes: [#7520](https://github.com/ClickHouse/ClickHouse/issues/7520) Closes: [#36973](https://github.com/ClickHouse/ClickHouse/issues/36973) Closes: [#40955](https://github.com/ClickHouse/ClickHouse/issues/40955) Closes: [#19687](https://github.com/ClickHouse/ClickHouse/issues/19687) Closes: [#23104](https://github.com/ClickHouse/ClickHouse/issues/23104) Closes: [#21584](https://github.com/ClickHouse/ClickHouse/issues/21584) Closes: [#23344](https://github.com/ClickHouse/ClickHouse/issues/23344) Closes: [#22627](https://github.com/ClickHouse/ClickHouse/issues/22627) Closes: [#10276](https://github.com/ClickHouse/ClickHouse/issues/10276) Closes: [#19687](https://github.com/ClickHouse/ClickHouse/issues/19687) Closes: [#4567](https://github.com/ClickHouse/ClickHouse/issues/4567) Closes: [#17710](https://github.com/ClickHouse/ClickHouse/issues/17710) Closes: [#11068](https://github.com/ClickHouse/ClickHouse/issues/11068) Closes: [#24395](https://github.com/ClickHouse/ClickHouse/issues/24395) Closes: [#23416](https://github.com/ClickHouse/ClickHouse/issues/23416) Closes: [#23162](https://github.com/ClickHouse/ClickHouse/issues/23162) Closes: [#25655](https://github.com/ClickHouse/ClickHouse/issues/25655) Closes: [#11757](https://github.com/ClickHouse/ClickHouse/issues/11757) Closes: [#6571](https://github.com/ClickHouse/ClickHouse/issues/6571) Closes: [#4432](https://github.com/ClickHouse/ClickHouse/issues/4432) Closes: [#8259](https://github.com/ClickHouse/ClickHouse/issues/8259) Closes: [#9233](https://github.com/ClickHouse/ClickHouse/issues/9233) Closes: [#14699](https://github.com/ClickHouse/ClickHouse/issues/14699) Closes: [#27068](https://github.com/ClickHouse/ClickHouse/issues/27068) Closes: [#28687](https://github.com/ClickHouse/ClickHouse/issues/28687) Closes: [#28777](https://github.com/ClickHouse/ClickHouse/issues/28777) Closes: [#29734](https://github.com/ClickHouse/ClickHouse/issues/29734) Closes: [#61238](https://github.com/ClickHouse/ClickHouse/issues/61238) Closes: [#33825](https://github.com/ClickHouse/ClickHouse/issues/33825) Closes: [#35608](https://github.com/ClickHouse/ClickHouse/issues/35608) Closes: [#29838](https://github.com/ClickHouse/ClickHouse/issues/29838) Closes: [#35652](https://github.com/ClickHouse/ClickHouse/issues/35652) Closes: [#36189](https://github.com/ClickHouse/ClickHouse/issues/36189) Closes: [#39634](https://github.com/ClickHouse/ClickHouse/issues/39634) Closes: [#47432](https://github.com/ClickHouse/ClickHouse/issues/47432) Closes: [#54910](https://github.com/ClickHouse/ClickHouse/issues/54910) Closes: [#57321](https://github.com/ClickHouse/ClickHouse/issues/57321) Closes: [#59154](https://github.com/ClickHouse/ClickHouse/issues/59154) Closes: [#61014](https://github.com/ClickHouse/ClickHouse/issues/61014) Closes: [#61950](https://github.com/ClickHouse/ClickHouse/issues/61950) Closes: [#55647](https://github.com/ClickHouse/ClickHouse/issues/55647) Closes: [#61947](https://github.com/ClickHouse/ClickHouse/issues/61947). [#62185](https://github.com/ClickHouse/ClickHouse/pull/62185) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Add more tests from issues which are no longer relevant or fixed by analyzer. Closes: [#58985](https://github.com/ClickHouse/ClickHouse/issues/58985) Closes: [#59549](https://github.com/ClickHouse/ClickHouse/issues/59549) Closes: [#36963](https://github.com/ClickHouse/ClickHouse/issues/36963) Closes: [#39453](https://github.com/ClickHouse/ClickHouse/issues/39453) Closes: [#56521](https://github.com/ClickHouse/ClickHouse/issues/56521) Closes: [#47552](https://github.com/ClickHouse/ClickHouse/issues/47552) Closes: [#56503](https://github.com/ClickHouse/ClickHouse/issues/56503) Closes: [#59101](https://github.com/ClickHouse/ClickHouse/issues/59101) Closes: [#50271](https://github.com/ClickHouse/ClickHouse/issues/50271) Closes: [#54954](https://github.com/ClickHouse/ClickHouse/issues/54954) Closes: [#56466](https://github.com/ClickHouse/ClickHouse/issues/56466) Closes: [#11000](https://github.com/ClickHouse/ClickHouse/issues/11000) Closes: [#10894](https://github.com/ClickHouse/ClickHouse/issues/10894) Closes: https://github.com/ClickHouse/ClickHouse/issues/448 Closes: [#8030](https://github.com/ClickHouse/ClickHouse/issues/8030) Closes: [#32139](https://github.com/ClickHouse/ClickHouse/issues/32139) Closes: [#47288](https://github.com/ClickHouse/ClickHouse/issues/47288) Closes: [#50705](https://github.com/ClickHouse/ClickHouse/issues/50705) Closes: [#54511](https://github.com/ClickHouse/ClickHouse/issues/54511) Closes: [#55466](https://github.com/ClickHouse/ClickHouse/issues/55466) Closes: [#58500](https://github.com/ClickHouse/ClickHouse/issues/58500) Closes: [#39923](https://github.com/ClickHouse/ClickHouse/issues/39923) Closes: [#39855](https://github.com/ClickHouse/ClickHouse/issues/39855) Closes: [#4596](https://github.com/ClickHouse/ClickHouse/issues/4596) Closes: [#47422](https://github.com/ClickHouse/ClickHouse/issues/47422) Closes: [#33000](https://github.com/ClickHouse/ClickHouse/issues/33000) Closes: [#14739](https://github.com/ClickHouse/ClickHouse/issues/14739) Closes: [#44039](https://github.com/ClickHouse/ClickHouse/issues/44039) Closes: [#8547](https://github.com/ClickHouse/ClickHouse/issues/8547) Closes: [#22923](https://github.com/ClickHouse/ClickHouse/issues/22923) Closes: [#23865](https://github.com/ClickHouse/ClickHouse/issues/23865) Closes: [#29748](https://github.com/ClickHouse/ClickHouse/issues/29748) Closes: [#4222](https://github.com/ClickHouse/ClickHouse/issues/4222). [#62457](https://github.com/ClickHouse/ClickHouse/pull/62457) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fixed build errors when OpenSSL is linked dynamically (note: this is generally unsupported and only required for IBM's s390x platforms). [#62888](https://github.com/ClickHouse/ClickHouse/pull/62888) ([Harry Lee](https://github.com/HarryLeeIBM)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Fix logical-error when undoing quorum insert transaction. [#61953](https://github.com/ClickHouse/ClickHouse/pull/61953) ([Han Fei](https://github.com/hanfei1991)).
* Fix parser error when using COUNT(*) with FILTER clause [#61357](https://github.com/ClickHouse/ClickHouse/pull/61357) ([Duc Canh Le](https://github.com/canhld94)).
* Fix logical error in `group_by_use_nulls` + grouping sets + analyzer + materialize/constant [#61567](https://github.com/ClickHouse/ClickHouse/pull/61567) ([Kruglov Pavel](https://github.com/Avogar)).
* Cancel merges before removing moved parts [#61610](https://github.com/ClickHouse/ClickHouse/pull/61610) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Fix abort in Apache Arrow [#61720](https://github.com/ClickHouse/ClickHouse/pull/61720) ([Kruglov Pavel](https://github.com/Avogar)).
* Search for `convert_to_replicated` flag at the correct path corresponding to the specific disk [#61769](https://github.com/ClickHouse/ClickHouse/pull/61769) ([Kirill](https://github.com/kirillgarbar)).
* Fix possible connections data-race for distributed_foreground_insert/distributed_background_insert_batch [#61867](https://github.com/ClickHouse/ClickHouse/pull/61867) ([Azat Khuzhin](https://github.com/azat)).
* Mark CANNOT_PARSE_ESCAPE_SEQUENCE error as parse error to be able to skip it in row input formats [#61883](https://github.com/ClickHouse/ClickHouse/pull/61883) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix writing exception message in output format in HTTP when http_wait_end_of_query is used [#61951](https://github.com/ClickHouse/ClickHouse/pull/61951) ([Kruglov Pavel](https://github.com/Avogar)).
* Proper fix for LowCardinality together with JSONExtact functions [#61957](https://github.com/ClickHouse/ClickHouse/pull/61957) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Crash in Engine Merge if Row Policy does not have expression [#61971](https://github.com/ClickHouse/ClickHouse/pull/61971) ([Ilya Golshtein](https://github.com/ilejn)).
* Fix WriteBufferAzureBlobStorage destructor uncaught exception [#61988](https://github.com/ClickHouse/ClickHouse/pull/61988) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Fix CREATE TABLE without columns definition for ReplicatedMergeTree [#62040](https://github.com/ClickHouse/ClickHouse/pull/62040) ([Azat Khuzhin](https://github.com/azat)).
* Fix optimize_skip_unused_shards_rewrite_in for composite sharding key [#62047](https://github.com/ClickHouse/ClickHouse/pull/62047) ([Azat Khuzhin](https://github.com/azat)).
* ReadWriteBufferFromHTTP set right header host when redirected [#62068](https://github.com/ClickHouse/ClickHouse/pull/62068) ([Sema Checherinda](https://github.com/CheSema)).
* Fix external table cannot parse data type Bool [#62115](https://github.com/ClickHouse/ClickHouse/pull/62115) ([Duc Canh Le](https://github.com/canhld94)).
* Analyzer: Fix query parameter resolution [#62186](https://github.com/ClickHouse/ClickHouse/pull/62186) ([Dmitry Novik](https://github.com/novikd)).
* Fix restoring parts while readonly [#62207](https://github.com/ClickHouse/ClickHouse/pull/62207) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix crash in index definition containing SQL UDF [#62225](https://github.com/ClickHouse/ClickHouse/pull/62225) ([vdimir](https://github.com/vdimir)).
* Fixing NULL random seed for generateRandom with analyzer. [#62248](https://github.com/ClickHouse/ClickHouse/pull/62248) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Correctly handle const columns in Distinct Transfom [#62250](https://github.com/ClickHouse/ClickHouse/pull/62250) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix Parts Splitter for queries with the FINAL modifier [#62268](https://github.com/ClickHouse/ClickHouse/pull/62268) ([Nikita Taranov](https://github.com/nickitat)).
* Analyzer: Fix alias to parametrized view resolution [#62274](https://github.com/ClickHouse/ClickHouse/pull/62274) ([Dmitry Novik](https://github.com/novikd)).
* Analyzer: Fix name resolution from parent scopes [#62281](https://github.com/ClickHouse/ClickHouse/pull/62281) ([Dmitry Novik](https://github.com/novikd)).
* Fix argMax with nullable non native numeric column [#62285](https://github.com/ClickHouse/ClickHouse/pull/62285) ([Raúl Marín](https://github.com/Algunenano)).
* Fix BACKUP and RESTORE of a materialized view in Ordinary database [#62295](https://github.com/ClickHouse/ClickHouse/pull/62295) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix data race on scalars in Context [#62305](https://github.com/ClickHouse/ClickHouse/pull/62305) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix primary key in materialized view [#62319](https://github.com/ClickHouse/ClickHouse/pull/62319) ([Murat Khairulin](https://github.com/mxwell)).
* Do not build multithread insert pipeline for tables without support [#62333](https://github.com/ClickHouse/ClickHouse/pull/62333) ([vdimir](https://github.com/vdimir)).
* Fix analyzer with positional arguments in distributed query [#62362](https://github.com/ClickHouse/ClickHouse/pull/62362) ([flynn](https://github.com/ucasfl)).
* Fix filter pushdown from additional_table_filters in Merge engine in analyzer [#62398](https://github.com/ClickHouse/ClickHouse/pull/62398) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix GLOBAL IN table queries with analyzer. [#62409](https://github.com/ClickHouse/ClickHouse/pull/62409) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Respect settings truncate_on_insert/create_new_file_on_insert in s3/hdfs/azure engines during partitioned write [#62425](https://github.com/ClickHouse/ClickHouse/pull/62425) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix backup restore path for AzureBlobStorage [#62447](https://github.com/ClickHouse/ClickHouse/pull/62447) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Fix SimpleSquashingChunksTransform [#62451](https://github.com/ClickHouse/ClickHouse/pull/62451) ([Nikita Taranov](https://github.com/nickitat)).
* Fix capture of nested lambda. [#62462](https://github.com/ClickHouse/ClickHouse/pull/62462) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Avoid crash when reading protobuf with recursive types [#62506](https://github.com/ClickHouse/ClickHouse/pull/62506) ([Raúl Marín](https://github.com/Algunenano)).
* Fix a bug moving one partition from one to itself [#62524](https://github.com/ClickHouse/ClickHouse/pull/62524) ([helifu](https://github.com/helifu)).
* Fix scalar subquery in LIMIT [#62567](https://github.com/ClickHouse/ClickHouse/pull/62567) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix segfault in the experimental and unsupported Hive engine, which we don't like anyway [#62578](https://github.com/ClickHouse/ClickHouse/pull/62578) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix memory leak in groupArraySorted [#62597](https://github.com/ClickHouse/ClickHouse/pull/62597) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix crash in largestTriangleThreeBuckets [#62646](https://github.com/ClickHouse/ClickHouse/pull/62646) ([Raúl Marín](https://github.com/Algunenano)).
* Fix tumble\[Start,End\] and hop\[Start,End\] for bigger resolutions [#62705](https://github.com/ClickHouse/ClickHouse/pull/62705) ([Jordi Villar](https://github.com/jrdi)).
* Fix argMin/argMax combinator state [#62708](https://github.com/ClickHouse/ClickHouse/pull/62708) ([Raúl Marín](https://github.com/Algunenano)).
* Fix temporary data in cache failing because of cache lock contention optimization [#62715](https://github.com/ClickHouse/ClickHouse/pull/62715) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix crash in function `mergeTreeIndex` [#62762](https://github.com/ClickHouse/ClickHouse/pull/62762) ([Anton Popov](https://github.com/CurtizJ)).
* fix: update: nested materialized columns: size check fixes [#62773](https://github.com/ClickHouse/ClickHouse/pull/62773) ([Eliot Hautefeuille](https://github.com/hileef)).
* Fix FINAL modifier is not respected in CTE with analyzer [#62811](https://github.com/ClickHouse/ClickHouse/pull/62811) ([Duc Canh Le](https://github.com/canhld94)).
* Fix crash in function `formatRow` with `JSON` format and HTTP interface [#62840](https://github.com/ClickHouse/ClickHouse/pull/62840) ([Anton Popov](https://github.com/CurtizJ)).
* Azure: fix building final url from endpoint object [#62850](https://github.com/ClickHouse/ClickHouse/pull/62850) ([Daniel Pozo Escalona](https://github.com/danipozo)).
* Fix GCD codec [#62853](https://github.com/ClickHouse/ClickHouse/pull/62853) ([Nikita Taranov](https://github.com/nickitat)).
* Fix LowCardinality(Nullable) key in hyperrectangle [#62866](https://github.com/ClickHouse/ClickHouse/pull/62866) ([Amos Bird](https://github.com/amosbird)).
* Fix fromUnixtimestamp in joda syntax while the input value beyond UInt32 [#62901](https://github.com/ClickHouse/ClickHouse/pull/62901) ([KevinyhZou](https://github.com/KevinyhZou)).
* Disable optimize_rewrite_aggregate_function_with_if for sum(nullable) [#62912](https://github.com/ClickHouse/ClickHouse/pull/62912) ([Raúl Marín](https://github.com/Algunenano)).
* Fix PREWHERE for StorageBuffer with different source table column types. [#62916](https://github.com/ClickHouse/ClickHouse/pull/62916) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix temporary data in cache incorrectly processing failure of cache key directory creation [#62925](https://github.com/ClickHouse/ClickHouse/pull/62925) ([Kseniia Sumarokova](https://github.com/kssenii)).
* gRPC: fix crash on IPv6 peer connection [#62978](https://github.com/ClickHouse/ClickHouse/pull/62978) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* Fix possible CHECKSUM_DOESNT_MATCH (and others) during replicated fetches [#62987](https://github.com/ClickHouse/ClickHouse/pull/62987) ([Azat Khuzhin](https://github.com/azat)).
* Fix terminate with uncaught exception in temporary data in cache [#62998](https://github.com/ClickHouse/ClickHouse/pull/62998) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix optimize_rewrite_aggregate_function_with_if implicit cast [#62999](https://github.com/ClickHouse/ClickHouse/pull/62999) ([Raúl Marín](https://github.com/Algunenano)).
* Fix unhandled exception in ~RestorerFromBackup [#63040](https://github.com/ClickHouse/ClickHouse/pull/63040) ([Vitaly Baranov](https://github.com/vitlibar)).
* Do not remove server constants from GROUP BY key for secondary query. [#63047](https://github.com/ClickHouse/ClickHouse/pull/63047) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix incorrect judgement of of monotonicity of function abs [#63097](https://github.com/ClickHouse/ClickHouse/pull/63097) ([Duc Canh Le](https://github.com/canhld94)).
* Set server name for SSL handshake in MongoDB engine [#63122](https://github.com/ClickHouse/ClickHouse/pull/63122) ([Alexander Gololobov](https://github.com/davenger)).
* Use user specified db instead of "config" for MongoDB wire protocol version check [#63126](https://github.com/ClickHouse/ClickHouse/pull/63126) ([Alexander Gololobov](https://github.com/davenger)).
### <a id="243"></a> ClickHouse release 24.3 LTS, 2024-03-27
#### Upgrade Notes
@ -38,9 +200,9 @@
* Optimized function `dotProduct` to omit unnecessary and expensive memory copies. [#60928](https://github.com/ClickHouse/ClickHouse/pull/60928) ([Robert Schulze](https://github.com/rschu1ze)).
* 30x faster printing for 256-bit integers. [#61100](https://github.com/ClickHouse/ClickHouse/pull/61100) ([Raúl Marín](https://github.com/Algunenano)).
* If the table's primary key contains mostly useless columns, don't keep them in memory. This is controlled by a new setting `primary_key_ratio_of_unique_prefix_values_to_skip_suffix_columns` with the value `0.9` by default, which means: for a composite primary key, if a column changes its value for at least 0.9 of all the times, the next columns after it will be not loaded. [#60255](https://github.com/ClickHouse/ClickHouse/pull/60255) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Improve the performance of serialized aggregation method when involving multiple `Nullable` columns. [#55809](https://github.com/ClickHouse/ClickHouse/pull/55809) ([Amos Bird](https://github.com/amosbird)).
* Lazy build JSON's output to improve performance of ALL JOIN. [#58278](https://github.com/ClickHouse/ClickHouse/pull/58278) ([LiuNeng](https://github.com/liuneng1994)).
* Make HTTP/HTTPs connections with external services, such as AWS S3 reusable for all uses cases. Even when response is 3xx or 4xx. [#58845](https://github.com/ClickHouse/ClickHouse/pull/58845) ([Sema Checherinda](https://github.com/CheSema)).
* Improve the performance of serialized aggregation methods when involving multiple `Nullable` columns. [#55809](https://github.com/ClickHouse/ClickHouse/pull/55809) ([Amos Bird](https://github.com/amosbird)).
* Lazy builds JSON's output to improve performance of ALL JOIN. [#58278](https://github.com/ClickHouse/ClickHouse/pull/58278) ([LiuNeng](https://github.com/liuneng1994)).
* Make HTTP/HTTPs connections with external services, such as AWS S3 reusable for all use cases. Even when the response is 3xx or 4xx. [#58845](https://github.com/ClickHouse/ClickHouse/pull/58845) ([Sema Checherinda](https://github.com/CheSema)).
* Improvements to aggregate functions `argMin` / `argMax` / `any` / `anyLast` / `anyHeavy`, as well as `ORDER BY {u8/u16/u32/u64/i8/i16/u32/i64) LIMIT 1` queries. [#58640](https://github.com/ClickHouse/ClickHouse/pull/58640) ([Raúl Marín](https://github.com/Algunenano)).
* Trivial optimization for column's filter. Peak memory can be reduced to 44% of the original in some cases. [#59698](https://github.com/ClickHouse/ClickHouse/pull/59698) ([李扬](https://github.com/taiyang-li)).
* Execute `multiIf` function in a columnar fashion when the result type's underlying type is a number. [#60384](https://github.com/ClickHouse/ClickHouse/pull/60384) ([李扬](https://github.com/taiyang-li)).
@ -49,7 +211,7 @@
* Optimize data movement between columns of a Nullable number or a Nullable string, which improves some micro-benchmarks. [#60846](https://github.com/ClickHouse/ClickHouse/pull/60846) ([李扬](https://github.com/taiyang-li)).
* Operations with the filesystem cache will suffer less from the lock contention. [#61066](https://github.com/ClickHouse/ClickHouse/pull/61066) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Optimize array join and other JOINs by preventing a wrong compiler's optimization. Close [#61074](https://github.com/ClickHouse/ClickHouse/issues/61074). [#61075](https://github.com/ClickHouse/ClickHouse/pull/61075) ([李扬](https://github.com/taiyang-li)).
* If a query with a syntax error contained `COLUMNS` matcher with a regular expression, the regular expression was compiled each time during the parser's backtracking, instead of being compiled once. This was a fundamental error. The compiled regexp was put to AST. But the letter A in AST means "abstract" which means it should not contain heavyweight objects. Parts of AST can be created and discarded during parsing, including a large number of backtracking. This leads to slowness on the parsing side and consequently allows DoS by a readonly user. But the main problem is that it prevents progress in fuzzers. [#61543](https://github.com/ClickHouse/ClickHouse/pull/61543) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* If a query with a syntax error contained the `COLUMNS` matcher with a regular expression, the regular expression was compiled each time during the parser's backtracking, instead of being compiled once. This was a fundamental error. The compiled regexp was put to AST. But the letter A in AST means "abstract" which means it should not contain heavyweight objects. Parts of AST can be created and discarded during parsing, including a large number of backtracking. This leads to slowness on the parsing side and consequently allows DoS by a readonly user. But the main problem is that it prevents progress in fuzzers. [#61543](https://github.com/ClickHouse/ClickHouse/pull/61543) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Add a new analyzer pass to optimize the IN operator for a single value. [#61564](https://github.com/ClickHouse/ClickHouse/pull/61564) ([LiuNeng](https://github.com/liuneng1994)).
* DNSResolver shuffles set of resolved IPs which is needed to uniformly utilize multiple endpoints of AWS S3. [#60965](https://github.com/ClickHouse/ClickHouse/pull/60965) ([Sema Checherinda](https://github.com/CheSema)).
@ -185,6 +347,7 @@
* Add sanity check for number of threads and block sizes. [#60138](https://github.com/ClickHouse/ClickHouse/pull/60138) ([Raúl Marín](https://github.com/Algunenano)).
* Don't infer floats in exponential notation by default. Add a setting `input_format_try_infer_exponent_floats` that will restore previous behaviour (disabled by default). Closes [#59476](https://github.com/ClickHouse/ClickHouse/issues/59476). [#59500](https://github.com/ClickHouse/ClickHouse/pull/59500) ([Kruglov Pavel](https://github.com/Avogar)).
* Allow alter operations to be surrounded by parenthesis. The emission of parentheses can be controlled by the `format_alter_operations_with_parentheses` config. By default, in formatted queries the parentheses are emitted as we store the formatted alter operations in some places as metadata (e.g.: mutations). The new syntax clarifies some of the queries where alter operations end in a list. E.g.: `ALTER TABLE x MODIFY TTL date GROUP BY a, b, DROP COLUMN c` cannot be parsed properly with the old syntax. In the new syntax the query `ALTER TABLE x (MODIFY TTL date GROUP BY a, b), (DROP COLUMN c)` is obvious. Older versions are not able to read the new syntax, therefore using the new syntax might cause issues if newer and older version of ClickHouse are mixed in a single cluster. [#59532](https://github.com/ClickHouse/ClickHouse/pull/59532) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Fix for the materialized view security issue, which allowed a user to insert into a table without required grants for that. Fix validates that the user has permission to insert not only into a materialized view but also into all underlying tables. This means that some queries, which worked before, now can fail with `Not enough privileges`. To address this problem, the release introduces a new feature of SQL security for views https://clickhouse.com/docs/en/sql-reference/statements/create/view#sql_security. [#54901](https://github.com/ClickHouse/ClickHouse/pull/54901) [#60439](https://github.com/ClickHouse/ClickHouse/pull/60439) ([pufit](https://github.com/pufit)).
#### New Feature
* Added new syntax which allows to specify definer user in View/Materialized View. This allows to execute selects/inserts from views without explicit grants for underlying tables. So, a View will encapsulate the grants. [#54901](https://github.com/ClickHouse/ClickHouse/pull/54901) [#60439](https://github.com/ClickHouse/ClickHouse/pull/60439) ([pufit](https://github.com/pufit)).

16
README.md
View File

@ -34,19 +34,25 @@ curl https://clickhouse.com/ | sh
Every month we get together with the community (users, contributors, customers, those interested in learning more about ClickHouse) to discuss what is coming in the latest release. If you are interested in sharing what you've built on ClickHouse, let us know.
* [v24.3 Community Call](https://clickhouse.com/company/events/v24-3-community-release-call) - Mar 26
* [v24.4 Community Call](https://clickhouse.com/company/events/v24-4-community-release-call) - Apr 30
* [v24.5 Community Call](https://clickhouse.com/company/events/v24-5-community-release-call) - May 30
## Upcoming Events
Keep an eye out for upcoming meetups and events around the world. Somewhere else you want us to be? Please feel free to reach out to tyler `<at>` clickhouse `<dot>` com. You can also peruse [ClickHouse Events](https://clickhouse.com/company/news-events) for a list of all upcoming trainings, meetups, speaking engagements, etc.
* [ClickHouse Meetup in Dubai](https://www.meetup.com/clickhouse-dubai-meetup-group/events/299629189/) - May 28
* [ClickHouse Meetup in Bengaluru](https://www.meetup.com/clickhouse-bangalore-user-group/events/300405581/) - May 4
* [ClickHouse Happy Hour @ Tom's Watch Bar - Los Angeles](https://www.meetup.com/clickhouse-los-angeles-user-group/events/300740584/) - May 22
* [ClickHouse & Confluent Meetup in Dubai](https://www.meetup.com/clickhouse-dubai-meetup-group/events/299629189/) - May 28
* [ClickHouse Meetup in Stockholm](https://www.meetup.com/clickhouse-stockholm-user-group/events/299752651/) - Jun 3
* [ClickHouse Meetup @ Cloudflare - San Francisco](https://www.meetup.com/clickhouse-silicon-valley-meetup-group/events/300523061/) - Jun 4
* [ClickHouse (クリックハウス) Meetup Tokyo](https://www.meetup.com/clickhouse-tokyo-user-group/events/300798053/) - Jun 5
* [ClickHouse Meetup in Amsterdam](https://www.meetup.com/clickhouse-netherlands-user-group/events/300781068/) - Jun 27
* [ClickHouse Meetup in Paris](https://www.meetup.com/clickhouse-france-user-group/events/300783448/) - Jul 9
* [ClickHouse Meetup @ Ramp - New York City](https://www.meetup.com/clickhouse-new-york-user-group/events/300595845/) - Jul 9
## Recent Recordings
* **Recent Meetup Videos**: [Meetup Playlist](https://www.youtube.com/playlist?list=PL0Z2YDlm0b3iNDUzpY1S3L_iV4nARda_U) Whenever possible recordings of the ClickHouse Community Meetups are edited and presented as individual talks. Current featuring "Modern SQL in 2023", "Fast, Concurrent, and Consistent Asynchronous INSERTS in ClickHouse", and "Full-Text Indices: Design and Experiments"
* **Recording available**: [**v24.2 Release Call**](https://www.youtube.com/watch?v=iN2y-TK8f3A) All the features of 24.2, one convenient video! Watch it now!
* **Recording available**: [**v24.4 Release Call**](https://www.youtube.com/watch?v=dtUqgcfOGmE) All the features of 24.4, one convenient video! Watch it now!
## Interested in joining ClickHouse and making it your full-time job?

3
SECURITY.md
View File

@ -13,9 +13,10 @@ The following versions of ClickHouse server are currently being supported with s
| Version | Supported |
|:-|:-|
| 24.4 | ✔️ |
| 24.3 | ✔️ |
| 24.2 | ✔️ |
| 24.1 | ✔️ |
| 24.1 | ❌ |
| 23.* | ❌ |
| 23.8 | ✔️ |
| 23.7 | ❌ |

19
base/base/cgroupsv2.cpp
View File

@ -23,18 +23,17 @@ bool cgroupsV2MemoryControllerEnabled()
{
#if defined(OS_LINUX)
chassert(cgroupsV2Enabled());
/// According to https://docs.kernel.org/admin-guide/cgroup-v2.html:
/// - file 'cgroup.controllers' defines which controllers *can* be enabled
/// - file 'cgroup.subtree_control' defines which controllers *are* enabled
/// Caveat: nested groups may disable controllers. For simplicity, check only the top-level group.
std::ifstream subtree_control_file(default_cgroups_mount / "cgroup.subtree_control");
if (!subtree_control_file.is_open())
/// According to https://docs.kernel.org/admin-guide/cgroup-v2.html, file "cgroup.controllers" defines which controllers are available
/// for the current + child cgroups. The set of available controllers can be restricted from level to level using file
/// "cgroups.subtree_control". It is therefore sufficient to check the bottom-most nested "cgroup.controllers" file.
std::string cgroup = cgroupV2OfProcess();
auto cgroup_dir = cgroup.empty() ? default_cgroups_mount : (default_cgroups_mount / cgroup);
std::ifstream controllers_file(cgroup_dir / "cgroup.controllers");
if (!controllers_file.is_open())
return false;
std::string controllers;
std::getline(subtree_control_file, controllers);
if (controllers.find("memory") == std::string::npos)
return false;
return true;
std::getline(controllers_file, controllers);
return controllers.find("memory") != std::string::npos;
#else
return false;
#endif

10
cmake/autogenerated_versions.txt
View File

@ -2,11 +2,11 @@
# NOTE: has nothing common with DBMS_TCP_PROTOCOL_VERSION,
# only DBMS_TCP_PROTOCOL_VERSION should be incremented on protocol changes.
SET(VERSION_REVISION 54485)
SET(VERSION_REVISION 54486)
SET(VERSION_MAJOR 24)
SET(VERSION_MINOR 4)
SET(VERSION_MINOR 5)
SET(VERSION_PATCH 1)
SET(VERSION_GITHASH 2c5c589a882ceec35439650337b92db3e76f0081)
SET(VERSION_DESCRIBE v24.4.1.1-testing)
SET(VERSION_STRING 24.4.1.1)
SET(VERSION_GITHASH 6d4b31322d168356c8b10c43b4cef157c82337ff)
SET(VERSION_DESCRIBE v24.5.1.1-testing)
SET(VERSION_STRING 24.5.1.1)
# end of autochange

11
cmake/linux/default_libs.cmake
View File

@ -8,6 +8,11 @@ set (DEFAULT_LIBS "-nodefaultlibs")
if (COMPILER_CLANG)
execute_process (COMMAND ${CMAKE_CXX_COMPILER} --target=${CMAKE_CXX_COMPILER_TARGET} --print-libgcc-file-name --rtlib=compiler-rt OUTPUT_VARIABLE BUILTINS_LIBRARY OUTPUT_STRIP_TRAILING_WHITESPACE)
# Apparently, in clang-19, the UBSan support library for C++ was moved out into ubsan_standalone_cxx.a, so we have to include both.
if (SANITIZE STREQUAL undefined)
string(REPLACE "builtins.a" "ubsan_standalone_cxx.a" EXTRA_BUILTINS_LIBRARY "${BUILTINS_LIBRARY}")
endif ()
if (NOT EXISTS "${BUILTINS_LIBRARY}")
set (BUILTINS_LIBRARY "-lgcc")
endif ()
@ -15,11 +20,11 @@ endif ()
if (OS_ANDROID)
# pthread and rt are included in libc
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${COVERAGE_OPTION} -lc -lm -ldl")
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${EXTRA_BUILTINS_LIBRARY} ${COVERAGE_OPTION} -lc -lm -ldl")
elseif (USE_MUSL)
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${COVERAGE_OPTION} -static -lc")
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${EXTRA_BUILTINS_LIBRARY} ${COVERAGE_OPTION} -static -lc")
else ()
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${COVERAGE_OPTION} -lc -lm -lrt -lpthread -ldl")
set (DEFAULT_LIBS "${DEFAULT_LIBS} ${BUILTINS_LIBRARY} ${EXTRA_BUILTINS_LIBRARY} ${COVERAGE_OPTION} -lc -lm -lrt -lpthread -ldl")
endif ()
message(STATUS "Default libraries: ${DEFAULT_LIBS}")

3
cmake/sanitize.cmake
View File

@ -8,9 +8,6 @@ option (SANITIZE "Enable one of the code sanitizers" "")
set (SAN_FLAGS "${SAN_FLAGS} -g -fno-omit-frame-pointer -DSANITIZER")
# It's possible to pass an ignore list to sanitizers (-fsanitize-ignorelist). Intentionally not doing this because
# 1. out-of-source suppressions are awkward 2. it seems ignore lists don't work after the Clang v16 upgrade (#49829)
if (SANITIZE)
if (SANITIZE STREQUAL "address")
set (ASAN_FLAGS "-fsanitize=address -fsanitize-address-use-after-scope")

2
contrib/azure vendored

@ -1 +1 @@
Subproject commit b90fd3c6ef3185f5be3408056567bca0854129b6
Subproject commit 6262a76ef4c4c330c84e58dd4f6f13f4e6230fcd

2
contrib/curl vendored

@ -1 +1 @@
Subproject commit 1a05e833f8f7140628b27882b10525fd9ec4b873
Subproject commit de7b3e89218467159a7af72d58cea8425946e97d

4
contrib/curl-cmake/CMakeLists.txt
View File

@ -33,14 +33,15 @@ set (SRCS
"${LIBRARY_DIR}/lib/curl_memrchr.c"
"${LIBRARY_DIR}/lib/curl_multibyte.c"
"${LIBRARY_DIR}/lib/curl_ntlm_core.c"
"${LIBRARY_DIR}/lib/curl_ntlm_wb.c"
"${LIBRARY_DIR}/lib/curl_path.c"
"${LIBRARY_DIR}/lib/curl_range.c"
"${LIBRARY_DIR}/lib/curl_rtmp.c"
"${LIBRARY_DIR}/lib/curl_sasl.c"
"${LIBRARY_DIR}/lib/curl_sha512_256.c"
"${LIBRARY_DIR}/lib/curl_sspi.c"
"${LIBRARY_DIR}/lib/curl_threads.c"
"${LIBRARY_DIR}/lib/curl_trc.c"
"${LIBRARY_DIR}/lib/cw-out.c"
"${LIBRARY_DIR}/lib/dict.c"
"${LIBRARY_DIR}/lib/doh.c"
"${LIBRARY_DIR}/lib/dynbuf.c"
@ -98,6 +99,7 @@ set (SRCS
"${LIBRARY_DIR}/lib/psl.c"
"${LIBRARY_DIR}/lib/rand.c"
"${LIBRARY_DIR}/lib/rename.c"
"${LIBRARY_DIR}/lib/request.c"
"${LIBRARY_DIR}/lib/rtsp.c"
"${LIBRARY_DIR}/lib/select.c"
"${LIBRARY_DIR}/lib/sendf.c"

1
contrib/curl-cmake/curl_config.h
View File

@ -38,6 +38,7 @@
#define HAVE_ARPA_INET_H
#define HAVE_ERRNO_H
#define HAVE_GETSOCKNAME
#define HAVE_FCNTL_H
#define HAVE_NETDB_H
#define HAVE_NETINET_IN_H

2
contrib/openssl vendored

@ -1 +1 @@
Subproject commit 417f9d2825799769708d99917d0465574c36f79a
Subproject commit f7b8721dfc66abb147f24ca07b9c9d1d64f40f71

17
contrib/openssl-cmake/CMakeLists.txt
View File

@ -93,7 +93,10 @@ enable_language(ASM)
if(COMPILER_CLANG)
add_definitions(-Wno-unused-command-line-argument)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=lld") # only relevant for -DENABLE_OPENSSL_DYNAMIC=1
# Note that s390x build uses mold linker
if(NOT ARCH_S390X)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=lld") # only relevant for -DENABLE_OPENSSL_DYNAMIC=1
endif()
endif()
if(ARCH_AMD64)
@ -191,6 +194,9 @@ elseif(ARCH_S390X)
perl_generate_asm(${OPENSSL_SOURCE_DIR}/crypto/aes/asm/aes-s390x.pl ${OPENSSL_BINARY_DIR}/crypto/aes/aes-s390x.S)
perl_generate_asm(${OPENSSL_SOURCE_DIR}/crypto/s390xcpuid.pl ${OPENSSL_BINARY_DIR}/crypto/s390xcpuid.S)
perl_generate_asm(${OPENSSL_SOURCE_DIR}/crypto/chacha/asm/chacha-s390x.pl ${OPENSSL_BINARY_DIR}/crypto/chacha/chacha-s390x.S)
perl_generate_asm(${OPENSSL_SOURCE_DIR}/crypto/rc4/asm/rc4-s390x.pl ${OPENSSL_BINARY_DIR}/crypto/rc4/rc4-s390x.S)
perl_generate_asm(${OPENSSL_SOURCE_DIR}/crypto/sha/asm/keccak1600-s390x.pl ${OPENSSL_BINARY_DIR}/crypto/sha/keccak1600-s390x.S)
elseif(ARCH_RISCV64)
macro(perl_generate_asm FILE_IN FILE_OUT)
add_custom_command(OUTPUT ${FILE_OUT}
@ -1290,6 +1296,15 @@ elseif(ARCH_S390X)
set(CRYPTO_SRC ${CRYPTO_SRC}
${OPENSSL_BINARY_DIR}/crypto/aes/aes-s390x.S
${OPENSSL_BINARY_DIR}/crypto/s390xcpuid.S
${OPENSSL_SOURCE_DIR}/crypto/bn/asm/s390x.S
${OPENSSL_SOURCE_DIR}/crypto/s390xcap.c
${OPENSSL_SOURCE_DIR}/crypto/bn/bn_s390x.c
${OPENSSL_SOURCE_DIR}/crypto/camellia/camellia.c
${OPENSSL_SOURCE_DIR}/crypto/camellia/cmll_cbc.c
${OPENSSL_BINARY_DIR}/crypto/chacha/chacha-s390x.S
${OPENSSL_BINARY_DIR}/crypto/rc4/rc4-s390x.S
${OPENSSL_BINARY_DIR}/crypto/sha/keccak1600-s390x.S
${OPENSSL_SOURCE_DIR}/crypto/whrlpool/wp_block.c
)
elseif(ARCH_RISCV64)
set(CRYPTO_SRC ${CRYPTO_SRC}

2
docker/keeper/Dockerfile
View File

@ -34,7 +34,7 @@ RUN arch=${TARGETARCH:-amd64} \
# lts / testing / prestable / etc
ARG REPO_CHANNEL="stable"
ARG REPOSITORY="https://packages.clickhouse.com/tgz/${REPO_CHANNEL}"
ARG VERSION="24.3.2.23"
ARG VERSION="24.4.1.2088"
ARG PACKAGES="clickhouse-keeper"
ARG DIRECT_DOWNLOAD_URLS=""

13
docker/packager/binary-builder/Dockerfile
View File

@ -43,14 +43,13 @@ RUN add-apt-repository ppa:ubuntu-toolchain-r/test --yes \
# Download toolchain and SDK for Darwin
RUN curl -sL -O https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX11.0.sdk.tar.xz
# disabled because s390x refused to build in the migration to OpenSSL
# Download and install mold 2.0 for s390x build
# RUN curl -Lo /tmp/mold.tar.gz "https://github.com/rui314/mold/releases/download/v2.0.0/mold-2.0.0-x86_64-linux.tar.gz" \
# && mkdir /tmp/mold \
# && tar -xzf /tmp/mold.tar.gz -C /tmp/mold \
# && cp -r /tmp/mold/mold*/* /usr \
# && rm -rf /tmp/mold \
# && rm /tmp/mold.tar.gz
RUN curl -Lo /tmp/mold.tar.gz "https://github.com/rui314/mold/releases/download/v2.0.0/mold-2.0.0-x86_64-linux.tar.gz" \
&& mkdir /tmp/mold \
&& tar -xzf /tmp/mold.tar.gz -C /tmp/mold \
&& cp -r /tmp/mold/mold*/* /usr \
&& rm -rf /tmp/mold \
&& rm /tmp/mold.tar.gz
# Architecture of the image when BuildKit/buildx is used
ARG TARGETARCH

17
docker/packager/packager
View File

@ -148,7 +148,7 @@ def parse_env_variables(
FREEBSD_SUFFIX = "-freebsd"
PPC_SUFFIX = "-ppc64le"
RISCV_SUFFIX = "-riscv64"
# S390X_SUFFIX = "-s390x" # disabled because s390x refused to build in the migration to OpenSSL
S390X_SUFFIX = "-s390x"
AMD64_COMPAT_SUFFIX = "-amd64-compat"
AMD64_MUSL_SUFFIX = "-amd64-musl"
@ -166,7 +166,7 @@ def parse_env_variables(
is_cross_arm_v80compat = compiler.endswith(ARM_V80COMPAT_SUFFIX)
is_cross_ppc = compiler.endswith(PPC_SUFFIX)
is_cross_riscv = compiler.endswith(RISCV_SUFFIX)
# is_cross_s390x = compiler.endswith(S390X_SUFFIX) # disabled because s390x refused to build in the migration to OpenSSL
is_cross_s390x = compiler.endswith(S390X_SUFFIX)
is_cross_freebsd = compiler.endswith(FREEBSD_SUFFIX)
is_amd64_compat = compiler.endswith(AMD64_COMPAT_SUFFIX)
is_amd64_musl = compiler.endswith(AMD64_MUSL_SUFFIX)
@ -230,12 +230,11 @@ def parse_env_variables(
cmake_flags.append(
"-DCMAKE_TOOLCHAIN_FILE=/build/cmake/linux/toolchain-riscv64.cmake"
)
# disabled because s390x refused to build in the migration to OpenSSL
# elif is_cross_s390x:
# cc = compiler[: -len(S390X_SUFFIX)]
# cmake_flags.append(
# "-DCMAKE_TOOLCHAIN_FILE=/build/cmake/linux/toolchain-s390x.cmake"
# )
elif is_cross_s390x:
cc = compiler[: -len(S390X_SUFFIX)]
cmake_flags.append(
"-DCMAKE_TOOLCHAIN_FILE=/build/cmake/linux/toolchain-s390x.cmake"
)
elif is_amd64_compat:
cc = compiler[: -len(AMD64_COMPAT_SUFFIX)]
result.append("DEB_ARCH=amd64")
@ -411,7 +410,7 @@ def parse_args() -> argparse.Namespace:
"clang-18-aarch64-v80compat",
"clang-18-ppc64le",
"clang-18-riscv64",
# "clang-18-s390x", # disabled because s390x refused to build in the migration to OpenSSL
"clang-18-s390x",
"clang-18-amd64-compat",
"clang-18-amd64-musl",
"clang-18-freebsd",

2
docker/server/Dockerfile.alpine
View File

@ -32,7 +32,7 @@ RUN arch=${TARGETARCH:-amd64} \
# lts / testing / prestable / etc
ARG REPO_CHANNEL="stable"
ARG REPOSITORY="https://packages.clickhouse.com/tgz/${REPO_CHANNEL}"
ARG VERSION="24.3.2.23"
ARG VERSION="24.4.1.2088"
ARG PACKAGES="clickhouse-client clickhouse-server clickhouse-common-static"
ARG DIRECT_DOWNLOAD_URLS=""

2
docker/server/Dockerfile.ubuntu
View File

@ -27,7 +27,7 @@ RUN sed -i "s|http://archive.ubuntu.com|${apt_archive}|g" /etc/apt/sources.list
ARG REPO_CHANNEL="stable"
ARG REPOSITORY="deb [signed-by=/usr/share/keyrings/clickhouse-keyring.gpg] https://packages.clickhouse.com/deb ${REPO_CHANNEL} main"
ARG VERSION="24.3.2.23"
ARG VERSION="24.4.1.2088"
ARG PACKAGES="clickhouse-client clickhouse-server clickhouse-common-static"
# set non-empty deb_location_url url to create a docker image

7
docker/test/integration/kerberized_hadoop/Dockerfile
View File

@ -14,11 +14,14 @@ RUN curl -o krb5-libs-1.10.3-65.el6.x86_64.rpm ftp://ftp.pbone.net/mirror/vault.
rpm -Uvh libkadm5-1.10.3-65.el6.x86_64.rpm libss-1.41.12-24.el6.x86_64.rpm krb5-libs-1.10.3-65.el6.x86_64.rpm krb5-workstation-1.10.3-65.el6.x86_64.rpm libcom_err-1.41.12-24.el6.x86_64.rpm && \
rm -fr *.rpm
ADD https://archive.apache.org/dist/commons/daemon/source/commons-daemon-1.0.15-src.tar.gz /tmp/commons-daemon-1.0.15-src.tar.gz
RUN cd /tmp && \
curl http://archive.apache.org/dist/commons/daemon/source/commons-daemon-1.0.15-src.tar.gz -o commons-daemon-1.0.15-src.tar.gz && \
tar xzf commons-daemon-1.0.15-src.tar.gz && \
cd commons-daemon-1.0.15-src/src/native/unix && \
./configure && \
make && \
cp ./jsvc /usr/local/hadoop-2.7.0/sbin && \
[ -e /usr/local/hadoop ] || ln -s ./hadoop-2.7.0 /usr/local/hadoop
cd /tmp && \
rm -rf commons-daemon-1.0.15-src* && \
{ [ -e /usr/local/hadoop ] || ln -s ./hadoop-2.7.0 /usr/local/hadoop; }

4
docker/test/stateful/run.sh
View File

@ -19,7 +19,7 @@ ln -s /usr/share/clickhouse-test/clickhouse-test /usr/bin/clickhouse-test
# install test configs
/usr/share/clickhouse-test/config/install.sh
azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --debug /azurite_log &
azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --silent --inMemoryPersistence &
./setup_minio.sh stateful
config_logs_export_cluster /etc/clickhouse-server/config.d/system_logs_export.yaml
@ -87,7 +87,7 @@ function start()
tail -n1000 /var/log/clickhouse-server/clickhouse-server.log
break
fi
timeout 120 service clickhouse-server start
timeout 120 sudo -E -u clickhouse /usr/bin/clickhouse-server --config /etc/clickhouse-server/config.xml --daemon --pid-file /var/run/clickhouse-server/clickhouse-server.pid
sleep 0.5
counter=$((counter + 1))
done

23
docker/test/stateless/run.sh
View File

@ -42,12 +42,6 @@ source /utils.lib
# install test configs
/usr/share/clickhouse-test/config/install.sh
if [[ -n "$USE_DATABASE_REPLICATED" ]] && [[ "$USE_DATABASE_REPLICATED" -eq 1 ]]; then
echo "Azure is disabled"
else
azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --debug /azurite_log &
fi
./setup_minio.sh stateless
./setup_hdfs_minicluster.sh
@ -97,12 +91,11 @@ if [ "$NUM_TRIES" -gt "1" ]; then
export THREAD_FUZZER_pthread_mutex_unlock_AFTER_SLEEP_TIME_US_MAX=10000
mkdir -p /var/run/clickhouse-server
# simplest way to forward env variables to server
sudo -E -u clickhouse /usr/bin/clickhouse-server --config /etc/clickhouse-server/config.xml --daemon --pid-file /var/run/clickhouse-server/clickhouse-server.pid
else
sudo clickhouse start
fi
# simplest way to forward env variables to server
sudo -E -u clickhouse /usr/bin/clickhouse-server --config /etc/clickhouse-server/config.xml --daemon --pid-file /var/run/clickhouse-server/clickhouse-server.pid
if [[ -n "$USE_DATABASE_REPLICATED" ]] && [[ "$USE_DATABASE_REPLICATED" -eq 1 ]]; then
sudo sed -i "s|<filesystem_caches_path>/var/lib/clickhouse/filesystem_caches/</filesystem_caches_path>|<filesystem_caches_path>/var/lib/clickhouse/filesystem_caches_1/</filesystem_caches_path>|" /etc/clickhouse-server1/config.d/filesystem_caches_path.xml
@ -212,6 +205,14 @@ function run_tests()
ADDITIONAL_OPTIONS+=('--s3-storage')
fi
if [[ -n "$USE_AZURE_STORAGE_FOR_MERGE_TREE" ]] && [[ "$USE_AZURE_STORAGE_FOR_MERGE_TREE" -eq 1 ]]; then
# to disable the same tests
ADDITIONAL_OPTIONS+=('--s3-storage')
# azurite is slow, but with these two settings it can be super slow
ADDITIONAL_OPTIONS+=('--no-random-settings')
ADDITIONAL_OPTIONS+=('--no-random-merge-tree-settings')
fi
if [[ -n "$USE_SHARED_CATALOG" ]] && [[ "$USE_SHARED_CATALOG" -eq 1 ]]; then
ADDITIONAL_OPTIONS+=('--shared-catalog')
fi
@ -286,7 +287,7 @@ stop_logs_replication
failed_to_save_logs=0
for table in query_log zookeeper_log trace_log transactions_info_log metric_log
do
err=$( { clickhouse-client -q "select * from system.$table format TSVWithNamesAndTypes" | zstd --threads=0 > /test_output/$table.tsv.zst; } 2>&1 )
err=$(clickhouse-client -q "select * from system.$table into outfile '/test_output/$table.tsv.gz' format TSVWithNamesAndTypes")
echo "$err"
[[ "0" != "${#err}" ]] && failed_to_save_logs=1
if [[ -n "$USE_DATABASE_REPLICATED" ]] && [[ "$USE_DATABASE_REPLICATED" -eq 1 ]]; then

5
docker/test/stateless/stress_tests.lib
View File

@ -78,7 +78,8 @@ function configure()
randomize_config_boolean_value use_compression zookeeper
fi
randomize_config_boolean_value allow_experimental_block_number_column block_number
randomize_config_boolean_value enable_block_number_column block_number
randomize_config_boolean_value enable_block_offset_column block_number
# for clickhouse-server (via service)
echo "ASAN_OPTIONS='malloc_context_size=10 verbosity=1 allocator_release_to_os_interval_ms=10000'" >> /etc/environment
@ -279,7 +280,7 @@ function check_logs_for_critical_errors()
function collect_query_and_trace_logs()
{
for table in query_log trace_log
for table in query_log trace_log metric_log
do
clickhouse-local --config-file=/etc/clickhouse-server/config.xml --only-system-tables -q "select * from system.$table format TSVWithNamesAndTypes" | zstd --threads=0 > /test_output/$table.tsv.zst ||:
done

1
docker/test/stress/run.sh
View File

@ -52,7 +52,6 @@ export ZOOKEEPER_FAULT_INJECTION=1
# available for dump via clickhouse-local
configure
azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --debug /azurite_log &
./setup_minio.sh stateless # to have a proper environment
config_logs_export_cluster /etc/clickhouse-server/config.d/system_logs_export.yaml

37
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@ -0,0 +1,37 @@
---
sidebar_position: 1
sidebar_label: 2024
---
# 2024 Changelog
### ClickHouse release v23.8.13.25-lts (37e034f903e) FIXME as compared to v23.8.12.13-lts (bdbd0d87e5d)
#### Improvement
* Backported in [#61930](https://github.com/ClickHouse/ClickHouse/issues/61930): Fixed accounting of memory allocated before attaching thread to a query or a user. [#56089](https://github.com/ClickHouse/ClickHouse/pull/56089) ([Nikita Taranov](https://github.com/nickitat)).
#### Build/Testing/Packaging Improvement
* Backported in [#62007](https://github.com/ClickHouse/ClickHouse/issues/62007): Remove from the Keeper Docker image the volumes at /etc/clickhouse-keeper and /var/log/clickhouse-keeper. [#61683](https://github.com/ClickHouse/ClickHouse/pull/61683) ([Tristan](https://github.com/Tristan971)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Fix REPLACE/MOVE PARTITION with zero-copy replication [#54193](https://github.com/ClickHouse/ClickHouse/pull/54193) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Fix ATTACH query with external ON CLUSTER [#61365](https://github.com/ClickHouse/ClickHouse/pull/61365) ([Nikolay Degterinsky](https://github.com/evillique)).
* Cancel merges before removing moved parts [#61610](https://github.com/ClickHouse/ClickHouse/pull/61610) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Mark CANNOT_PARSE_ESCAPE_SEQUENCE error as parse error to be able to skip it in row input formats [#61883](https://github.com/ClickHouse/ClickHouse/pull/61883) ([Kruglov Pavel](https://github.com/Avogar)).
* Try to fix segfault in Hive engine [#62578](https://github.com/ClickHouse/ClickHouse/pull/62578) ([Nikolay Degterinsky](https://github.com/evillique)).
#### CI Fix or Improvement (changelog entry is not required)
* Backported in [#62201](https://github.com/ClickHouse/ClickHouse/issues/62201):. [#62190](https://github.com/ClickHouse/ClickHouse/pull/62190) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* Backported in [#62796](https://github.com/ClickHouse/ClickHouse/issues/62796): We won't fail the job when GH fails to retrieve the job ID and URLs. [#62651](https://github.com/ClickHouse/ClickHouse/pull/62651) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#62968](https://github.com/ClickHouse/ClickHouse/issues/62968):. [#62932](https://github.com/ClickHouse/ClickHouse/pull/62932) ([Robert Schulze](https://github.com/rschu1ze)).
#### NO CL CATEGORY
* Backported in [#62585](https://github.com/ClickHouse/ClickHouse/issues/62585):. [#60078](https://github.com/ClickHouse/ClickHouse/pull/60078) ([Maksim Kita](https://github.com/kitaisreal)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Throw on query timeout in ZooKeeperRetries [#60922](https://github.com/ClickHouse/ClickHouse/pull/60922) ([Antonio Andelic](https://github.com/antonio2368)).

14
docs/changelogs/v23.8.14.6-lts.md Normal file
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@ -0,0 +1,14 @@
---
sidebar_position: 1
sidebar_label: 2024
---
# 2024 Changelog
### ClickHouse release v23.8.14.6-lts (967e51c1d6b) FIXME as compared to v23.8.13.25-lts (37e034f903e)
#### Bug Fix (user-visible misbehavior in an official stable release)
* Set server name for SSL handshake in MongoDB engine [#63122](https://github.com/ClickHouse/ClickHouse/pull/63122) ([Alexander Gololobov](https://github.com/davenger)).
* Use user specified db instead of "config" for MongoDB wire protocol version check [#63126](https://github.com/ClickHouse/ClickHouse/pull/63126) ([Alexander Gololobov](https://github.com/davenger)).

60
docs/changelogs/v24.2.3.70-stable.md Normal file
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@ -0,0 +1,60 @@
---
sidebar_position: 1
sidebar_label: 2024
---
# 2024 Changelog
### ClickHouse release v24.2.3.70-stable (8a7b8c7afb6) FIXME as compared to v24.2.2.71-stable (9293d361e72)
#### Performance Improvement
* Backported in [#61630](https://github.com/ClickHouse/ClickHouse/issues/61630): Optimized function `dotProduct` to omit unnecessary and expensive memory copies. [#60928](https://github.com/ClickHouse/ClickHouse/pull/60928) ([Robert Schulze](https://github.com/rschu1ze)).
#### Build/Testing/Packaging Improvement
* Backported in [#62011](https://github.com/ClickHouse/ClickHouse/issues/62011): Remove from the Keeper Docker image the volumes at /etc/clickhouse-keeper and /var/log/clickhouse-keeper. [#61683](https://github.com/ClickHouse/ClickHouse/pull/61683) ([Tristan](https://github.com/Tristan971)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Fix possible incorrect result of aggregate function `uniqExact` [#61257](https://github.com/ClickHouse/ClickHouse/pull/61257) ([Anton Popov](https://github.com/CurtizJ)).
* Fix ATTACH query with external ON CLUSTER [#61365](https://github.com/ClickHouse/ClickHouse/pull/61365) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix consecutive keys optimization for nullable keys [#61393](https://github.com/ClickHouse/ClickHouse/pull/61393) ([Anton Popov](https://github.com/CurtizJ)).
* fix issue of actions dag split [#61458](https://github.com/ClickHouse/ClickHouse/pull/61458) ([Raúl Marín](https://github.com/Algunenano)).
* Disable async_insert_use_adaptive_busy_timeout correctly with compatibility settings [#61468](https://github.com/ClickHouse/ClickHouse/pull/61468) ([Raúl Marín](https://github.com/Algunenano)).
* Fix bug when reading system.parts using UUID (issue 61220). [#61479](https://github.com/ClickHouse/ClickHouse/pull/61479) ([Dan Wu](https://github.com/wudanzy)).
* Fix ALTER QUERY MODIFY SQL SECURITY [#61480](https://github.com/ClickHouse/ClickHouse/pull/61480) ([pufit](https://github.com/pufit)).
* Fix client `-s` argument [#61530](https://github.com/ClickHouse/ClickHouse/pull/61530) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Fix string search with const position [#61547](https://github.com/ClickHouse/ClickHouse/pull/61547) ([Antonio Andelic](https://github.com/antonio2368)).
* Cancel merges before removing moved parts [#61610](https://github.com/ClickHouse/ClickHouse/pull/61610) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Fix crash in `multiSearchAllPositionsCaseInsensitiveUTF8` for incorrect UTF-8 [#61749](https://github.com/ClickHouse/ClickHouse/pull/61749) ([pufit](https://github.com/pufit)).
* Mark CANNOT_PARSE_ESCAPE_SEQUENCE error as parse error to be able to skip it in row input formats [#61883](https://github.com/ClickHouse/ClickHouse/pull/61883) ([Kruglov Pavel](https://github.com/Avogar)).
* Crash in Engine Merge if Row Policy does not have expression [#61971](https://github.com/ClickHouse/ClickHouse/pull/61971) ([Ilya Golshtein](https://github.com/ilejn)).
* Fix data race on scalars in Context [#62305](https://github.com/ClickHouse/ClickHouse/pull/62305) ([Kruglov Pavel](https://github.com/Avogar)).
* Try to fix segfault in Hive engine [#62578](https://github.com/ClickHouse/ClickHouse/pull/62578) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix memory leak in groupArraySorted [#62597](https://github.com/ClickHouse/ClickHouse/pull/62597) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix GCD codec [#62853](https://github.com/ClickHouse/ClickHouse/pull/62853) ([Nikita Taranov](https://github.com/nickitat)).
* Fix temporary data in cache incorrectly processing failure of cache key directory creation [#62925](https://github.com/ClickHouse/ClickHouse/pull/62925) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix incorrect judgement of of monotonicity of function abs [#63097](https://github.com/ClickHouse/ClickHouse/pull/63097) ([Duc Canh Le](https://github.com/canhld94)).
* Make sanity check of settings worse [#63119](https://github.com/ClickHouse/ClickHouse/pull/63119) ([Raúl Marín](https://github.com/Algunenano)).
* Set server name for SSL handshake in MongoDB engine [#63122](https://github.com/ClickHouse/ClickHouse/pull/63122) ([Alexander Gololobov](https://github.com/davenger)).
* Format SQL security option only in `CREATE VIEW` queries. [#63136](https://github.com/ClickHouse/ClickHouse/pull/63136) ([pufit](https://github.com/pufit)).
#### CI Fix or Improvement (changelog entry is not required)
* Backported in [#61430](https://github.com/ClickHouse/ClickHouse/issues/61430):. [#61374](https://github.com/ClickHouse/ClickHouse/pull/61374) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#61490](https://github.com/ClickHouse/ClickHouse/issues/61490): ... [#61441](https://github.com/ClickHouse/ClickHouse/pull/61441) ([Max K.](https://github.com/maxknv)).
* Backported in [#61638](https://github.com/ClickHouse/ClickHouse/issues/61638):. [#61592](https://github.com/ClickHouse/ClickHouse/pull/61592) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#61896](https://github.com/ClickHouse/ClickHouse/issues/61896): ... [#61877](https://github.com/ClickHouse/ClickHouse/pull/61877) ([Max K.](https://github.com/maxknv)).
* Backported in [#62055](https://github.com/ClickHouse/ClickHouse/issues/62055): ... [#62044](https://github.com/ClickHouse/ClickHouse/pull/62044) ([Max K.](https://github.com/maxknv)).
* Backported in [#62203](https://github.com/ClickHouse/ClickHouse/issues/62203):. [#62190](https://github.com/ClickHouse/ClickHouse/pull/62190) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* Backported in [#62800](https://github.com/ClickHouse/ClickHouse/issues/62800): We won't fail the job when GH fails to retrieve the job ID and URLs. [#62651](https://github.com/ClickHouse/ClickHouse/pull/62651) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#62970](https://github.com/ClickHouse/ClickHouse/issues/62970):. [#62932](https://github.com/ClickHouse/ClickHouse/pull/62932) ([Robert Schulze](https://github.com/rschu1ze)).
* Backported in [#63115](https://github.com/ClickHouse/ClickHouse/issues/63115): ... [#63108](https://github.com/ClickHouse/ClickHouse/pull/63108) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
#### NO CL ENTRY
* NO CL ENTRY: 'Revert "Backport [#61479](https://github.com/ClickHouse/ClickHouse/issues/61479) to 24.2: Fix bug when reading system.parts using UUID (issue 61220)."'. [#61776](https://github.com/ClickHouse/ClickHouse/pull/61776) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Throw on query timeout in ZooKeeperRetries [#60922](https://github.com/ClickHouse/ClickHouse/pull/60922) ([Antonio Andelic](https://github.com/antonio2368)).

76
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@ -0,0 +1,76 @@
---
sidebar_position: 1
sidebar_label: 2024
---
# 2024 Changelog
### ClickHouse release v24.3.3.102-lts (7e7f3bdd9be) FIXME as compared to v24.3.2.23-lts (8b7d910960c)
#### Improvement
* Backported in [#62188](https://github.com/ClickHouse/ClickHouse/issues/62188): StorageJoin with strictness `ANY` is consistent after reload. When several rows with the same key are inserted, the first one will have higher priority (before, it was chosen randomly upon table loading). close [#51027](https://github.com/ClickHouse/ClickHouse/issues/51027). [#61972](https://github.com/ClickHouse/ClickHouse/pull/61972) ([vdimir](https://github.com/vdimir)).
* Backported in [#62443](https://github.com/ClickHouse/ClickHouse/issues/62443): Client has to send header 'Keep-Alive: timeout=X' to the server. If a client receives a response from the server with that header, client has to use the value from the server. Also for a client it is better not to use a connection which is nearly expired in order to avoid connection close race. [#62249](https://github.com/ClickHouse/ClickHouse/pull/62249) ([Sema Checherinda](https://github.com/CheSema)).
* Backported in [#62666](https://github.com/ClickHouse/ClickHouse/issues/62666): S3 storage and backups also need the same default keep alive settings as s3 disk. [#62648](https://github.com/ClickHouse/ClickHouse/pull/62648) ([Sema Checherinda](https://github.com/CheSema)).
#### Build/Testing/Packaging Improvement
* Backported in [#62013](https://github.com/ClickHouse/ClickHouse/issues/62013): Remove from the Keeper Docker image the volumes at /etc/clickhouse-keeper and /var/log/clickhouse-keeper. [#61683](https://github.com/ClickHouse/ClickHouse/pull/61683) ([Tristan](https://github.com/Tristan971)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Cancel merges before removing moved parts [#61610](https://github.com/ClickHouse/ClickHouse/pull/61610) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Mark CANNOT_PARSE_ESCAPE_SEQUENCE error as parse error to be able to skip it in row input formats [#61883](https://github.com/ClickHouse/ClickHouse/pull/61883) ([Kruglov Pavel](https://github.com/Avogar)).
* Crash in Engine Merge if Row Policy does not have expression [#61971](https://github.com/ClickHouse/ClickHouse/pull/61971) ([Ilya Golshtein](https://github.com/ilejn)).
* ReadWriteBufferFromHTTP set right header host when redirected [#62068](https://github.com/ClickHouse/ClickHouse/pull/62068) ([Sema Checherinda](https://github.com/CheSema)).
* Analyzer: Fix query parameter resolution [#62186](https://github.com/ClickHouse/ClickHouse/pull/62186) ([Dmitry Novik](https://github.com/novikd)).
* Fixing NULL random seed for generateRandom with analyzer. [#62248](https://github.com/ClickHouse/ClickHouse/pull/62248) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix PartsSplitter [#62268](https://github.com/ClickHouse/ClickHouse/pull/62268) ([Nikita Taranov](https://github.com/nickitat)).
* Analyzer: Fix alias to parametrized view resolution [#62274](https://github.com/ClickHouse/ClickHouse/pull/62274) ([Dmitry Novik](https://github.com/novikd)).
* Analyzer: Fix name resolution from parent scopes [#62281](https://github.com/ClickHouse/ClickHouse/pull/62281) ([Dmitry Novik](https://github.com/novikd)).
* Fix argMax with nullable non native numeric column [#62285](https://github.com/ClickHouse/ClickHouse/pull/62285) ([Raúl Marín](https://github.com/Algunenano)).
* Fix data race on scalars in Context [#62305](https://github.com/ClickHouse/ClickHouse/pull/62305) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix analyzer with positional arguments in distributed query [#62362](https://github.com/ClickHouse/ClickHouse/pull/62362) ([flynn](https://github.com/ucasfl)).
* Fix filter pushdown from additional_table_filters in Merge engine in analyzer [#62398](https://github.com/ClickHouse/ClickHouse/pull/62398) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix GLOBAL IN table queries with analyzer. [#62409](https://github.com/ClickHouse/ClickHouse/pull/62409) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix scalar subquery in LIMIT [#62567](https://github.com/ClickHouse/ClickHouse/pull/62567) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Try to fix segfault in Hive engine [#62578](https://github.com/ClickHouse/ClickHouse/pull/62578) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix memory leak in groupArraySorted [#62597](https://github.com/ClickHouse/ClickHouse/pull/62597) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix argMin/argMax combinator state [#62708](https://github.com/ClickHouse/ClickHouse/pull/62708) ([Raúl Marín](https://github.com/Algunenano)).
* Fix temporary data in cache failing because of cache lock contention optimization [#62715](https://github.com/ClickHouse/ClickHouse/pull/62715) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix FINAL modifier is not respected in CTE with analyzer [#62811](https://github.com/ClickHouse/ClickHouse/pull/62811) ([Duc Canh Le](https://github.com/canhld94)).
* Fix crash in function `formatRow` with `JSON` format and HTTP interface [#62840](https://github.com/ClickHouse/ClickHouse/pull/62840) ([Anton Popov](https://github.com/CurtizJ)).
* Fix GCD codec [#62853](https://github.com/ClickHouse/ClickHouse/pull/62853) ([Nikita Taranov](https://github.com/nickitat)).
* Disable optimize_rewrite_aggregate_function_with_if for sum(nullable) [#62912](https://github.com/ClickHouse/ClickHouse/pull/62912) ([Raúl Marín](https://github.com/Algunenano)).
* Fix temporary data in cache incorrectly processing failure of cache key directory creation [#62925](https://github.com/ClickHouse/ClickHouse/pull/62925) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix optimize_rewrite_aggregate_function_with_if implicit cast [#62999](https://github.com/ClickHouse/ClickHouse/pull/62999) ([Raúl Marín](https://github.com/Algunenano)).
* Do not remove server constants from GROUP BY key for secondary query. [#63047](https://github.com/ClickHouse/ClickHouse/pull/63047) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix incorrect judgement of of monotonicity of function abs [#63097](https://github.com/ClickHouse/ClickHouse/pull/63097) ([Duc Canh Le](https://github.com/canhld94)).
* Set server name for SSL handshake in MongoDB engine [#63122](https://github.com/ClickHouse/ClickHouse/pull/63122) ([Alexander Gololobov](https://github.com/davenger)).
* Use user specified db instead of "config" for MongoDB wire protocol version check [#63126](https://github.com/ClickHouse/ClickHouse/pull/63126) ([Alexander Gololobov](https://github.com/davenger)).
* Format SQL security option only in `CREATE VIEW` queries. [#63136](https://github.com/ClickHouse/ClickHouse/pull/63136) ([pufit](https://github.com/pufit)).
#### CI Fix or Improvement (changelog entry is not required)
* Backported in [#62802](https://github.com/ClickHouse/ClickHouse/issues/62802): We won't fail the job when GH fails to retrieve the job ID and URLs. [#62651](https://github.com/ClickHouse/ClickHouse/pull/62651) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#62834](https://github.com/ClickHouse/ClickHouse/issues/62834): Add `isort` config fo the first-party imports; fail build reports on non-success statuses. [#62786](https://github.com/ClickHouse/ClickHouse/pull/62786) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#62879](https://github.com/ClickHouse/ClickHouse/issues/62879):. [#62835](https://github.com/ClickHouse/ClickHouse/pull/62835) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#62971](https://github.com/ClickHouse/ClickHouse/issues/62971):. [#62932](https://github.com/ClickHouse/ClickHouse/pull/62932) ([Robert Schulze](https://github.com/rschu1ze)).
* Backported in [#63064](https://github.com/ClickHouse/ClickHouse/issues/63064): ... [#63035](https://github.com/ClickHouse/ClickHouse/pull/63035) ([Aleksei Filatov](https://github.com/aalexfvk)).
* Backported in [#63117](https://github.com/ClickHouse/ClickHouse/issues/63117): ... [#63108](https://github.com/ClickHouse/ClickHouse/pull/63108) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
#### NO CL CATEGORY
* Backported in [#62572](https://github.com/ClickHouse/ClickHouse/issues/62572):. [#62549](https://github.com/ClickHouse/ClickHouse/pull/62549) ([Alexander Tokmakov](https://github.com/tavplubix)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Fix another logical error in group_by_use_nulls. [#62236](https://github.com/ClickHouse/ClickHouse/pull/62236) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix lambda(tuple(x), x + 1) syntax in analyzer [#62253](https://github.com/ClickHouse/ClickHouse/pull/62253) ([vdimir](https://github.com/vdimir)).
* Fix __actionName, add tests for internal functions direct call [#62287](https://github.com/ClickHouse/ClickHouse/pull/62287) ([vdimir](https://github.com/vdimir)).
* Fix optimize_uniq_to_count when only prefix of key is matched [#62325](https://github.com/ClickHouse/ClickHouse/pull/62325) ([vdimir](https://github.com/vdimir)).
* Analyzer: Fix PREWHERE with lambda functions [#62336](https://github.com/ClickHouse/ClickHouse/pull/62336) ([vdimir](https://github.com/vdimir)).
* Use function isNotDistinctFrom only in join key [#62387](https://github.com/ClickHouse/ClickHouse/pull/62387) ([vdimir](https://github.com/vdimir)).
* Fix integration-tests logs compression [#62556](https://github.com/ClickHouse/ClickHouse/pull/62556) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Try to fix if_transform_strings_to_enum performance test [#62558](https://github.com/ClickHouse/ClickHouse/pull/62558) ([Dmitry Novik](https://github.com/novikd)).
* Fix shellcheck style checking and issues [#62761](https://github.com/ClickHouse/ClickHouse/pull/62761) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Fix flaky 03128_argMin_combinator_projection [#62965](https://github.com/ClickHouse/ClickHouse/pull/62965) ([Raúl Marín](https://github.com/Algunenano)).

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@ -0,0 +1,403 @@
---
sidebar_position: 1
sidebar_label: 2024
---
# 2024 Changelog
### ClickHouse release v24.4.1.2088-stable (6d4b31322d1) FIXME as compared to v24.3.1.2672-lts (2c5c589a882)
#### Backward Incompatible Change
* Don't allow to set max_parallel_replicas to 0 as it doesn't make sense. Setting it to 0 could lead to unexpected logical errors. Closes [#60140](https://github.com/ClickHouse/ClickHouse/issues/60140). [#61201](https://github.com/ClickHouse/ClickHouse/pull/61201) ([Kruglov Pavel](https://github.com/Avogar)).
* `clickhouse-odbc-bridge` and `clickhouse-library-bridge` are separate packages. This closes [#61677](https://github.com/ClickHouse/ClickHouse/issues/61677). [#62114](https://github.com/ClickHouse/ClickHouse/pull/62114) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Remove support for INSERT WATCH query (part of the experimental LIVE VIEW feature). [#62382](https://github.com/ClickHouse/ClickHouse/pull/62382) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Remove optimize_monotonous_functions_in_order_by setting. [#63004](https://github.com/ClickHouse/ClickHouse/pull/63004) ([Raúl Marín](https://github.com/Algunenano)).
#### New Feature
* Supports dropping multiple tables at the same time like `drop table a,b,c`;. [#58705](https://github.com/ClickHouse/ClickHouse/pull/58705) ([zhongyuankai](https://github.com/zhongyuankai)).
* Table engine is grantable now, and it won't affect existing users behavior. [#60117](https://github.com/ClickHouse/ClickHouse/pull/60117) ([jsc0218](https://github.com/jsc0218)).
* Added a rewritable S3 disk which supports INSERT operations and does not require locally stored metadata. [#61116](https://github.com/ClickHouse/ClickHouse/pull/61116) ([Julia Kartseva](https://github.com/jkartseva)).
* For convenience purpose, `SELECT * FROM numbers() `will work in the same way as `SELECT * FROM system.numbers` - without a limit. [#61969](https://github.com/ClickHouse/ClickHouse/pull/61969) ([YenchangChan](https://github.com/YenchangChan)).
* Modifying memory table settings through `ALTER MODIFY SETTING` is now supported. ``` ALTER TABLE memory MODIFY SETTING min_rows_to_keep = 100, max_rows_to_keep = 1000; ```. [#62039](https://github.com/ClickHouse/ClickHouse/pull/62039) ([zhongyuankai](https://github.com/zhongyuankai)).
* Analyzer support recursive CTEs. [#62074](https://github.com/ClickHouse/ClickHouse/pull/62074) ([Maksim Kita](https://github.com/kitaisreal)).
* Analyzer support QUALIFY clause. Closes [#47819](https://github.com/ClickHouse/ClickHouse/issues/47819). [#62619](https://github.com/ClickHouse/ClickHouse/pull/62619) ([Maksim Kita](https://github.com/kitaisreal)).
* Added `role` query parameter to the HTTP interface. It works similarly to `SET ROLE x`, applying the role before the statement is executed. This allows for overcoming the limitation of the HTTP interface, as multiple statements are not allowed, and it is not possible to send both `SET ROLE x` and the statement itself at the same time. It is possible to set multiple roles that way, e.g., `?role=x&role=y`, which will be an equivalent of `SET ROLE x, y`. [#62669](https://github.com/ClickHouse/ClickHouse/pull/62669) ([Serge Klochkov](https://github.com/slvrtrn)).
* Add `SYSTEM UNLOAD PRIMARY KEY`. [#62738](https://github.com/ClickHouse/ClickHouse/pull/62738) ([Pablo Marcos](https://github.com/pamarcos)).
#### Performance Improvement
* Reduce overhead of the mutations for SELECTs (v2). [#60856](https://github.com/ClickHouse/ClickHouse/pull/60856) ([Azat Khuzhin](https://github.com/azat)).
* More frequently invoked functions in PODArray are now force-inlined. [#61144](https://github.com/ClickHouse/ClickHouse/pull/61144) ([李扬](https://github.com/taiyang-li)).
* JOIN filter push down improvements using equivalent sets. [#61216](https://github.com/ClickHouse/ClickHouse/pull/61216) ([Maksim Kita](https://github.com/kitaisreal)).
* Enabled fast Parquet encoder by default (output_format_parquet_use_custom_encoder). [#62088](https://github.com/ClickHouse/ClickHouse/pull/62088) ([Michael Kolupaev](https://github.com/al13n321)).
* ... When all required fields are read, skip all remaining fields directly which can save a lot of comparison. [#62210](https://github.com/ClickHouse/ClickHouse/pull/62210) ([lgbo](https://github.com/lgbo-ustc)).
* Functions `splitByChar` and `splitByRegexp` were speed up significantly. [#62392](https://github.com/ClickHouse/ClickHouse/pull/62392) ([李扬](https://github.com/taiyang-li)).
* Improve trivial insert select from files in file/s3/hdfs/url/... table functions. Add separate max_parsing_threads setting to control the number of threads used in parallel parsing. [#62404](https://github.com/ClickHouse/ClickHouse/pull/62404) ([Kruglov Pavel](https://github.com/Avogar)).
* Support parallel write buffer for AzureBlobStorage managed by setting `azure_allow_parallel_part_upload`. [#62534](https://github.com/ClickHouse/ClickHouse/pull/62534) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Functions `to_utc_timestamp` and `from_utc_timestamp` are now about 2x faster. [#62583](https://github.com/ClickHouse/ClickHouse/pull/62583) ([KevinyhZou](https://github.com/KevinyhZou)).
* Functions `parseDateTimeOrNull`, `parseDateTimeOrZero`, `parseDateTimeInJodaSyntaxOrNull` and `parseDateTimeInJodaSyntaxOrZero` now run significantly faster (10x - 1000x) when the input contains mostly non-parseable values. [#62634](https://github.com/ClickHouse/ClickHouse/pull/62634) ([LiuNeng](https://github.com/liuneng1994)).
* SELECTs against `system.query_cache` are now noticeably faster when the query cache contains lots of entries (e.g. more than 100.000). [#62671](https://github.com/ClickHouse/ClickHouse/pull/62671) ([Robert Schulze](https://github.com/rschu1ze)).
* QueryPlan convert OUTER JOIN to INNER JOIN optimization if filter after JOIN always filters default values. Optimization can be controlled with setting `query_plan_convert_outer_join_to_inner_join`, enabled by default. [#62907](https://github.com/ClickHouse/ClickHouse/pull/62907) ([Maksim Kita](https://github.com/kitaisreal)).
* Enable optimize_rewrite_sum_if_to_count_if by default. [#62929](https://github.com/ClickHouse/ClickHouse/pull/62929) ([Raúl Marín](https://github.com/Algunenano)).
#### Improvement
* Introduce separate consumer/producer tags for the Kafka configuration. This avoids warnings from librdkafka that consumer properties were specified for producer instances and vice versa (e.g. `Configuration property session.timeout.ms is a consumer property and will be ignored by this producer instance`). Closes: [#58983](https://github.com/ClickHouse/ClickHouse/issues/58983). [#58956](https://github.com/ClickHouse/ClickHouse/pull/58956) ([Aleksandr Musorin](https://github.com/AVMusorin)).
* Added `value1`, `value2`, ..., `value10` columns to `system.text_log`. These columns contain values that were used to format the message. [#59619](https://github.com/ClickHouse/ClickHouse/pull/59619) ([Alexey Katsman](https://github.com/alexkats)).
* Add a setting `first_day_of_week` which affects the first day of the week considered by functions `toStartOfInterval(..., INTERVAL ... WEEK)`. This allows for consistency with function `toStartOfWeek` which defaults to Sunday as the first day of the week. [#60598](https://github.com/ClickHouse/ClickHouse/pull/60598) ([Jordi Villar](https://github.com/jrdi)).
* Added persistent virtual column `_block_offset` which stores original number of row in block that was assigned at insert. Persistence of column `_block_offset` can be enabled by setting `enable_block_offset_column`. Added virtual column`_part_data_version` which contains either min block number or mutation version of part. Persistent virtual column `_block_number` is not considered experimental anymore. [#60676](https://github.com/ClickHouse/ClickHouse/pull/60676) ([Anton Popov](https://github.com/CurtizJ)).
* Less contention in filesystem cache (part 3): execute removal from filesystem without lock on space reservation attempt. [#61163](https://github.com/ClickHouse/ClickHouse/pull/61163) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Functions `date_diff` and `age` now calculate their result at nanosecond instead of microsecond precision. They now also offer `nanosecond` (or `nanoseconds` or `ns`) as a possible value for the `unit` parameter. [#61409](https://github.com/ClickHouse/ClickHouse/pull/61409) ([Austin Kothig](https://github.com/kothiga)).
* Now marks are not loaded for wide parts during merges. [#61551](https://github.com/ClickHouse/ClickHouse/pull/61551) ([Anton Popov](https://github.com/CurtizJ)).
* Reload certificate chain during certificate reload. [#61671](https://github.com/ClickHouse/ClickHouse/pull/61671) ([Pervakov Grigorii](https://github.com/GrigoryPervakov)).
* Speed up dynamic resize of filesystem cache. [#61723](https://github.com/ClickHouse/ClickHouse/pull/61723) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Add `TRUNCATE ALL TABLES`. [#61862](https://github.com/ClickHouse/ClickHouse/pull/61862) ([豪肥肥](https://github.com/HowePa)).
* Try to prevent [#60432](https://github.com/ClickHouse/ClickHouse/issues/60432) by not allowing a table to be attached if there is an active replica for that replica path. [#61876](https://github.com/ClickHouse/ClickHouse/pull/61876) ([Arthur Passos](https://github.com/arthurpassos)).
* Add a setting `input_format_json_throw_on_bad_escape_sequence`, disabling it allows saving bad escape sequences in JSON input formats. [#61889](https://github.com/ClickHouse/ClickHouse/pull/61889) ([Kruglov Pavel](https://github.com/Avogar)).
* Userspace page cache works with static web storage (`disk(type = web)`) now. Use client setting `use_page_cache_for_disks_without_file_cache=1` to enable. [#61911](https://github.com/ClickHouse/ClickHouse/pull/61911) ([Michael Kolupaev](https://github.com/al13n321)).
* Implement input() for clickhouse-local. [#61923](https://github.com/ClickHouse/ClickHouse/pull/61923) ([Azat Khuzhin](https://github.com/azat)).
* Fix logical-error when undoing quorum insert transaction. [#61953](https://github.com/ClickHouse/ClickHouse/pull/61953) ([Han Fei](https://github.com/hanfei1991)).
* StorageJoin with strictness `ANY` is consistent after reload. When several rows with the same key are inserted, the first one will have higher priority (before, it was chosen randomly upon table loading). close [#51027](https://github.com/ClickHouse/ClickHouse/issues/51027). [#61972](https://github.com/ClickHouse/ClickHouse/pull/61972) ([vdimir](https://github.com/vdimir)).
* Automatically infer Nullable column types from Apache Arrow schema. [#61984](https://github.com/ClickHouse/ClickHouse/pull/61984) ([Maksim Kita](https://github.com/kitaisreal)).
* Allow to cancel parallel merge of aggregate states during aggregation. Example: `uniqExact`. [#61992](https://github.com/ClickHouse/ClickHouse/pull/61992) ([Maksim Kita](https://github.com/kitaisreal)).
* Don't treat Bool and number variants as suspicious in Variant type. [#61999](https://github.com/ClickHouse/ClickHouse/pull/61999) ([Kruglov Pavel](https://github.com/Avogar)).
* Use `system.keywords` to fill in the suggestions and also use them in the all places internally. [#62000](https://github.com/ClickHouse/ClickHouse/pull/62000) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Implement better conversion from String to Variant using parsing. [#62005](https://github.com/ClickHouse/ClickHouse/pull/62005) ([Kruglov Pavel](https://github.com/Avogar)).
* Support Variant in JSONExtract functions. [#62014](https://github.com/ClickHouse/ClickHouse/pull/62014) ([Kruglov Pavel](https://github.com/Avogar)).
* Dictionary source with `INVALIDATE_QUERY` is not reloaded twice on startup. [#62050](https://github.com/ClickHouse/ClickHouse/pull/62050) ([vdimir](https://github.com/vdimir)).
* `OPTIMIZE FINAL` for `ReplicatedMergeTree` now will wait for currently active merges to finish and then reattempt to schedule a final merge. This will put it more in line with ordinary `MergeTree` behaviour. [#62067](https://github.com/ClickHouse/ClickHouse/pull/62067) ([Nikita Taranov](https://github.com/nickitat)).
* While read data from a hive text file, it would use the first line of hive text file to resize of number of input fields, and sometimes the fields number of first line is not matched with the hive table defined , such as the hive table is defined to have 3 columns, like `test_tbl(a Int32, b Int32, c Int32)`, but the first line of text file only has 2 fields, and in this suitation, the input fields will be resized to 2, and if the next line of the text file has 3 fields, then the third field can not be read but set a default value 0, which is not right. [#62086](https://github.com/ClickHouse/ClickHouse/pull/62086) ([KevinyhZou](https://github.com/KevinyhZou)).
* CREATE AS copies the comment. [#62117](https://github.com/ClickHouse/ClickHouse/pull/62117) ([Pablo Marcos](https://github.com/pamarcos)).
* The syntax highlighting while typing in the client will work on the syntax level (previously, it worked on the lexer level). [#62123](https://github.com/ClickHouse/ClickHouse/pull/62123) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Fix an issue where when a redundant `= 1` or `= 0` is added after a boolean expression involving the primary key, the primary index is not used. For example, both `SELECT * FROM <table> WHERE <primary-key> IN (<value>) = 1` and `SELECT * FROM <table> WHERE <primary-key> NOT IN (<value>) = 0` will both perform a full table scan, when the primary index can be used. [#62142](https://github.com/ClickHouse/ClickHouse/pull/62142) ([josh-hildred](https://github.com/josh-hildred)).
* Add query progress to table zookeeper. [#62152](https://github.com/ClickHouse/ClickHouse/pull/62152) ([JackyWoo](https://github.com/JackyWoo)).
* Add ability to turn on trace collector (Real and CPU) server-wide. [#62189](https://github.com/ClickHouse/ClickHouse/pull/62189) ([alesapin](https://github.com/alesapin)).
* Added setting `lightweight_deletes_sync` (default value: 2 - wait all replicas synchronously). It is similar to setting `mutations_sync` but affects only behaviour of lightweight deletes. [#62195](https://github.com/ClickHouse/ClickHouse/pull/62195) ([Anton Popov](https://github.com/CurtizJ)).
* Distinguish booleans and integers while parsing values for custom settings: ``` SET custom_a = true; SET custom_b = 1; ```. [#62206](https://github.com/ClickHouse/ClickHouse/pull/62206) ([Vitaly Baranov](https://github.com/vitlibar)).
* Support S3 access through AWS Private Link Interface endpoints. Closes [#60021](https://github.com/ClickHouse/ClickHouse/issues/60021), [#31074](https://github.com/ClickHouse/ClickHouse/issues/31074) and [#53761](https://github.com/ClickHouse/ClickHouse/issues/53761). [#62208](https://github.com/ClickHouse/ClickHouse/pull/62208) ([Arthur Passos](https://github.com/arthurpassos)).
* Client has to send header 'Keep-Alive: timeout=X' to the server. If a client receives a response from the server with that header, client has to use the value from the server. Also for a client it is better not to use a connection which is nearly expired in order to avoid connection close race. [#62249](https://github.com/ClickHouse/ClickHouse/pull/62249) ([Sema Checherinda](https://github.com/CheSema)).
* Added nano- micro- milliseconds unit for date_trunc. [#62335](https://github.com/ClickHouse/ClickHouse/pull/62335) ([Misz606](https://github.com/Misz606)).
* Do not create a directory for UDF in clickhouse-client if it does not exist. This closes [#59597](https://github.com/ClickHouse/ClickHouse/issues/59597). [#62366](https://github.com/ClickHouse/ClickHouse/pull/62366) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* The query cache now no longer caches results of queries against system tables (`system.*`, `information_schema.*`, `INFORMATION_SCHEMA.*`). [#62376](https://github.com/ClickHouse/ClickHouse/pull/62376) ([Robert Schulze](https://github.com/rschu1ze)).
* `MOVE PARTITION TO TABLE` query can be delayed or can throw `TOO_MANY_PARTS` exception to avoid exceeding limits on the part count. The same settings and limits are applied as for the`INSERT` query (see `max_parts_in_total`, `parts_to_delay_insert`, `parts_to_throw_insert`, `inactive_parts_to_throw_insert`, `inactive_parts_to_delay_insert`, `max_avg_part_size_for_too_many_parts`, `min_delay_to_insert_ms` and `max_delay_to_insert` settings). [#62420](https://github.com/ClickHouse/ClickHouse/pull/62420) ([Sergei Trifonov](https://github.com/serxa)).
* Added the missing `hostname` column to system table `blob_storage_log`. [#62456](https://github.com/ClickHouse/ClickHouse/pull/62456) ([Jayme Bird](https://github.com/jaymebrd)).
* Changed the default installation directory on macOS from `/usr/bin` to `/usr/local/bin`. This is necessary because Apple's System Integrity Protection introduced with macOS El Capitan (2015) prevents writing into `/usr/bin`, even with `sudo`. [#62489](https://github.com/ClickHouse/ClickHouse/pull/62489) ([haohang](https://github.com/yokofly)).
* Make transform always return the first match. [#62518](https://github.com/ClickHouse/ClickHouse/pull/62518) ([Raúl Marín](https://github.com/Algunenano)).
* For consistency with other system tables, `system.backup_log` now has a column `event_time`. [#62541](https://github.com/ClickHouse/ClickHouse/pull/62541) ([Jayme Bird](https://github.com/jaymebrd)).
* Avoid evaluating table DEFAULT expressions while executing `RESTORE`. [#62601](https://github.com/ClickHouse/ClickHouse/pull/62601) ([Vitaly Baranov](https://github.com/vitlibar)).
* Return stream of chunks from `system.remote_data_paths` instead of accumulating the whole result in one big chunk. This allows to consume less memory, show intermediate progress and cancel the query. [#62613](https://github.com/ClickHouse/ClickHouse/pull/62613) ([Alexander Gololobov](https://github.com/davenger)).
* S3 storage and backups also need the same default keep alive settings as s3 disk. [#62648](https://github.com/ClickHouse/ClickHouse/pull/62648) ([Sema Checherinda](https://github.com/CheSema)).
* Table `system.backup_log` now has the "default" sorting key which is `event_date, event_time`, the same as for other `_log` table engines. [#62667](https://github.com/ClickHouse/ClickHouse/pull/62667) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Mark type Variant as comparable so it can be used in primary key. [#62693](https://github.com/ClickHouse/ClickHouse/pull/62693) ([Kruglov Pavel](https://github.com/Avogar)).
* Add librdkafka's client identifier to log messages to be able to differentiate log messages from different consumers of a single table. [#62813](https://github.com/ClickHouse/ClickHouse/pull/62813) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Allow special macros {uuid} and {database} in a Replicated database ZooKeeper path. [#62818](https://github.com/ClickHouse/ClickHouse/pull/62818) ([Vitaly Baranov](https://github.com/vitlibar)).
* Allow quota key with different auth scheme in HTTP requests. [#62842](https://github.com/ClickHouse/ClickHouse/pull/62842) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Remove experimental tag from Replicated database engine. Now it is in Beta stage. [#62937](https://github.com/ClickHouse/ClickHouse/pull/62937) ([Justin de Guzman](https://github.com/justindeguzman)).
* Reduce the verbosity of command line argument `--help` in `clickhouse client` and `clickhouse local`. The previous output is now generated by `--help --verbose`. [#62973](https://github.com/ClickHouse/ClickHouse/pull/62973) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* Close session if [user's `valid_until`](https://clickhouse.com/docs/en/sql-reference/statements/create/user#valid-until-clause) is reached. [#63046](https://github.com/ClickHouse/ClickHouse/pull/63046) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* `log_bin_use_v1_row_events` was removed in MySQL 8.3, fix [#60479](https://github.com/ClickHouse/ClickHouse/issues/60479). [#63101](https://github.com/ClickHouse/ClickHouse/pull/63101) ([Eugene Klimov](https://github.com/Slach)).
#### Build/Testing/Packaging Improvement
* Ignore DROP queries in stress test with 1/2 probability, use TRUNCATE instead of ignoring DROP in upgrade check for Memory/JOIN tables. [#61476](https://github.com/ClickHouse/ClickHouse/pull/61476) ([Kruglov Pavel](https://github.com/Avogar)).
* Remove from the Keeper Docker image the volumes at /etc/clickhouse-keeper and /var/log/clickhouse-keeper. [#61683](https://github.com/ClickHouse/ClickHouse/pull/61683) ([Tristan](https://github.com/Tristan971)).
* Timeout was updated in https://github.com/ClickHouse/ClickHouse/pull/45765, but exception message was not. [#62139](https://github.com/ClickHouse/ClickHouse/pull/62139) ([Arthur Passos](https://github.com/arthurpassos)).
* Add tests for all issues which are no longer relevant with Analyzer being enabled by default. Closes: [#55794](https://github.com/ClickHouse/ClickHouse/issues/55794) Closes: [#49472](https://github.com/ClickHouse/ClickHouse/issues/49472) Closes: [#44414](https://github.com/ClickHouse/ClickHouse/issues/44414) Closes: [#13843](https://github.com/ClickHouse/ClickHouse/issues/13843) Closes: [#55803](https://github.com/ClickHouse/ClickHouse/issues/55803) Closes: [#48308](https://github.com/ClickHouse/ClickHouse/issues/48308) Closes: [#45535](https://github.com/ClickHouse/ClickHouse/issues/45535) Closes: [#44365](https://github.com/ClickHouse/ClickHouse/issues/44365) Closes: [#44153](https://github.com/ClickHouse/ClickHouse/issues/44153) Closes: [#42399](https://github.com/ClickHouse/ClickHouse/issues/42399) Closes: [#27115](https://github.com/ClickHouse/ClickHouse/issues/27115) Closes: [#23162](https://github.com/ClickHouse/ClickHouse/issues/23162) Closes: [#15395](https://github.com/ClickHouse/ClickHouse/issues/15395) Closes: [#15411](https://github.com/ClickHouse/ClickHouse/issues/15411) Closes: [#14978](https://github.com/ClickHouse/ClickHouse/issues/14978) Closes: [#17319](https://github.com/ClickHouse/ClickHouse/issues/17319) Closes: [#11813](https://github.com/ClickHouse/ClickHouse/issues/11813) Closes: [#13210](https://github.com/ClickHouse/ClickHouse/issues/13210) Closes: [#23053](https://github.com/ClickHouse/ClickHouse/issues/23053) Closes: [#37729](https://github.com/ClickHouse/ClickHouse/issues/37729) Closes: [#32639](https://github.com/ClickHouse/ClickHouse/issues/32639) Closes: [#9954](https://github.com/ClickHouse/ClickHouse/issues/9954) Closes: [#41964](https://github.com/ClickHouse/ClickHouse/issues/41964) Closes: [#54317](https://github.com/ClickHouse/ClickHouse/issues/54317) Closes: [#7520](https://github.com/ClickHouse/ClickHouse/issues/7520) Closes: [#36973](https://github.com/ClickHouse/ClickHouse/issues/36973) Closes: [#40955](https://github.com/ClickHouse/ClickHouse/issues/40955) Closes: [#19687](https://github.com/ClickHouse/ClickHouse/issues/19687) Closes: [#23104](https://github.com/ClickHouse/ClickHouse/issues/23104) Closes: [#21584](https://github.com/ClickHouse/ClickHouse/issues/21584) Closes: [#23344](https://github.com/ClickHouse/ClickHouse/issues/23344) Closes: [#22627](https://github.com/ClickHouse/ClickHouse/issues/22627) Closes: [#10276](https://github.com/ClickHouse/ClickHouse/issues/10276) Closes: [#19687](https://github.com/ClickHouse/ClickHouse/issues/19687) Closes: [#4567](https://github.com/ClickHouse/ClickHouse/issues/4567) Closes: [#17710](https://github.com/ClickHouse/ClickHouse/issues/17710) Closes: [#11068](https://github.com/ClickHouse/ClickHouse/issues/11068) Closes: [#24395](https://github.com/ClickHouse/ClickHouse/issues/24395) Closes: [#23416](https://github.com/ClickHouse/ClickHouse/issues/23416) Closes: [#23162](https://github.com/ClickHouse/ClickHouse/issues/23162) Closes: [#25655](https://github.com/ClickHouse/ClickHouse/issues/25655) Closes: [#11757](https://github.com/ClickHouse/ClickHouse/issues/11757) Closes: [#6571](https://github.com/ClickHouse/ClickHouse/issues/6571) Closes: [#4432](https://github.com/ClickHouse/ClickHouse/issues/4432) Closes: [#8259](https://github.com/ClickHouse/ClickHouse/issues/8259) Closes: [#9233](https://github.com/ClickHouse/ClickHouse/issues/9233) Closes: [#14699](https://github.com/ClickHouse/ClickHouse/issues/14699) Closes: [#27068](https://github.com/ClickHouse/ClickHouse/issues/27068) Closes: [#28687](https://github.com/ClickHouse/ClickHouse/issues/28687) Closes: [#28777](https://github.com/ClickHouse/ClickHouse/issues/28777) Closes: [#29734](https://github.com/ClickHouse/ClickHouse/issues/29734) Closes: [#61238](https://github.com/ClickHouse/ClickHouse/issues/61238) Closes: [#33825](https://github.com/ClickHouse/ClickHouse/issues/33825) Closes: [#35608](https://github.com/ClickHouse/ClickHouse/issues/35608) Closes: [#29838](https://github.com/ClickHouse/ClickHouse/issues/29838) Closes: [#35652](https://github.com/ClickHouse/ClickHouse/issues/35652) Closes: [#36189](https://github.com/ClickHouse/ClickHouse/issues/36189) Closes: [#39634](https://github.com/ClickHouse/ClickHouse/issues/39634) Closes: [#47432](https://github.com/ClickHouse/ClickHouse/issues/47432) Closes: [#54910](https://github.com/ClickHouse/ClickHouse/issues/54910) Closes: [#57321](https://github.com/ClickHouse/ClickHouse/issues/57321) Closes: [#59154](https://github.com/ClickHouse/ClickHouse/issues/59154) Closes: [#61014](https://github.com/ClickHouse/ClickHouse/issues/61014) Closes: [#61950](https://github.com/ClickHouse/ClickHouse/issues/61950) Closes: [#55647](https://github.com/ClickHouse/ClickHouse/issues/55647) Closes: [#61947](https://github.com/ClickHouse/ClickHouse/issues/61947). [#62185](https://github.com/ClickHouse/ClickHouse/pull/62185) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Vendor in rust dependencies. [#62297](https://github.com/ClickHouse/ClickHouse/pull/62297) ([Raúl Marín](https://github.com/Algunenano)).
* Add more tests from issues which are no longer relevant or fixed by analyzer. Closes: [#58985](https://github.com/ClickHouse/ClickHouse/issues/58985) Closes: [#59549](https://github.com/ClickHouse/ClickHouse/issues/59549) Closes: [#36963](https://github.com/ClickHouse/ClickHouse/issues/36963) Closes: [#39453](https://github.com/ClickHouse/ClickHouse/issues/39453) Closes: [#56521](https://github.com/ClickHouse/ClickHouse/issues/56521) Closes: [#47552](https://github.com/ClickHouse/ClickHouse/issues/47552) Closes: [#56503](https://github.com/ClickHouse/ClickHouse/issues/56503) Closes: [#59101](https://github.com/ClickHouse/ClickHouse/issues/59101) Closes: [#50271](https://github.com/ClickHouse/ClickHouse/issues/50271) Closes: [#54954](https://github.com/ClickHouse/ClickHouse/issues/54954) Closes: [#56466](https://github.com/ClickHouse/ClickHouse/issues/56466) Closes: [#11000](https://github.com/ClickHouse/ClickHouse/issues/11000) Closes: [#10894](https://github.com/ClickHouse/ClickHouse/issues/10894) Closes: https://github.com/ClickHouse/ClickHouse/issues/448 Closes: [#8030](https://github.com/ClickHouse/ClickHouse/issues/8030) Closes: [#32139](https://github.com/ClickHouse/ClickHouse/issues/32139) Closes: [#47288](https://github.com/ClickHouse/ClickHouse/issues/47288) Closes: [#50705](https://github.com/ClickHouse/ClickHouse/issues/50705) Closes: [#54511](https://github.com/ClickHouse/ClickHouse/issues/54511) Closes: [#55466](https://github.com/ClickHouse/ClickHouse/issues/55466) Closes: [#58500](https://github.com/ClickHouse/ClickHouse/issues/58500) Closes: [#39923](https://github.com/ClickHouse/ClickHouse/issues/39923) Closes: [#39855](https://github.com/ClickHouse/ClickHouse/issues/39855) Closes: [#4596](https://github.com/ClickHouse/ClickHouse/issues/4596) Closes: [#47422](https://github.com/ClickHouse/ClickHouse/issues/47422) Closes: [#33000](https://github.com/ClickHouse/ClickHouse/issues/33000) Closes: [#14739](https://github.com/ClickHouse/ClickHouse/issues/14739) Closes: [#44039](https://github.com/ClickHouse/ClickHouse/issues/44039) Closes: [#8547](https://github.com/ClickHouse/ClickHouse/issues/8547) Closes: [#22923](https://github.com/ClickHouse/ClickHouse/issues/22923) Closes: [#23865](https://github.com/ClickHouse/ClickHouse/issues/23865) Closes: [#29748](https://github.com/ClickHouse/ClickHouse/issues/29748) Closes: [#4222](https://github.com/ClickHouse/ClickHouse/issues/4222). [#62457](https://github.com/ClickHouse/ClickHouse/pull/62457) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fixed build errors when OpenSSL is linked dynamically (note: this is generally unsupported and only required for s390x platforms). [#62888](https://github.com/ClickHouse/ClickHouse/pull/62888) ([Harry Lee](https://github.com/HarryLeeIBM)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Fix parser error when using COUNT(*) with FILTER clause [#61357](https://github.com/ClickHouse/ClickHouse/pull/61357) ([Duc Canh Le](https://github.com/canhld94)).
* Fix logical error in group_by_use_nulls + grouping set + analyzer + materialize/constant [#61567](https://github.com/ClickHouse/ClickHouse/pull/61567) ([Kruglov Pavel](https://github.com/Avogar)).
* Cancel merges before removing moved parts [#61610](https://github.com/ClickHouse/ClickHouse/pull/61610) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Try to fix abort in arrow [#61720](https://github.com/ClickHouse/ClickHouse/pull/61720) ([Kruglov Pavel](https://github.com/Avogar)).
* Search for convert_to_replicated flag at the correct path [#61769](https://github.com/ClickHouse/ClickHouse/pull/61769) ([Kirill](https://github.com/kirillgarbar)).
* Fix possible connections data-race for distributed_foreground_insert/distributed_background_insert_batch [#61867](https://github.com/ClickHouse/ClickHouse/pull/61867) ([Azat Khuzhin](https://github.com/azat)).
* Mark CANNOT_PARSE_ESCAPE_SEQUENCE error as parse error to be able to skip it in row input formats [#61883](https://github.com/ClickHouse/ClickHouse/pull/61883) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix writing exception message in output format in HTTP when http_wait_end_of_query is used [#61951](https://github.com/ClickHouse/ClickHouse/pull/61951) ([Kruglov Pavel](https://github.com/Avogar)).
* Proper fix for LowCardinality together with JSONExtact functions [#61957](https://github.com/ClickHouse/ClickHouse/pull/61957) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Crash in Engine Merge if Row Policy does not have expression [#61971](https://github.com/ClickHouse/ClickHouse/pull/61971) ([Ilya Golshtein](https://github.com/ilejn)).
* Fix WriteBufferAzureBlobStorage destructor uncaught exception [#61988](https://github.com/ClickHouse/ClickHouse/pull/61988) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Fix CREATE TABLE w/o columns definition for ReplicatedMergeTree [#62040](https://github.com/ClickHouse/ClickHouse/pull/62040) ([Azat Khuzhin](https://github.com/azat)).
* Fix optimize_skip_unused_shards_rewrite_in for composite sharding key [#62047](https://github.com/ClickHouse/ClickHouse/pull/62047) ([Azat Khuzhin](https://github.com/azat)).
* ReadWriteBufferFromHTTP set right header host when redirected [#62068](https://github.com/ClickHouse/ClickHouse/pull/62068) ([Sema Checherinda](https://github.com/CheSema)).
* Fix external table cannot parse data type Bool [#62115](https://github.com/ClickHouse/ClickHouse/pull/62115) ([Duc Canh Le](https://github.com/canhld94)).
* Revert "Merge pull request [#61564](https://github.com/ClickHouse/ClickHouse/issues/61564) from liuneng1994/optimize_in_single_value" [#62135](https://github.com/ClickHouse/ClickHouse/pull/62135) ([Raúl Marín](https://github.com/Algunenano)).
* Add test for [#35215](https://github.com/ClickHouse/ClickHouse/issues/35215) [#62180](https://github.com/ClickHouse/ClickHouse/pull/62180) ([Raúl Marín](https://github.com/Algunenano)).
* Analyzer: Fix query parameter resolution [#62186](https://github.com/ClickHouse/ClickHouse/pull/62186) ([Dmitry Novik](https://github.com/novikd)).
* Fix restoring parts while readonly [#62207](https://github.com/ClickHouse/ClickHouse/pull/62207) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix crash in index definition containing sql udf [#62225](https://github.com/ClickHouse/ClickHouse/pull/62225) ([vdimir](https://github.com/vdimir)).
* Fixing NULL random seed for generateRandom with analyzer. [#62248](https://github.com/ClickHouse/ClickHouse/pull/62248) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Correctly handle const columns in DistinctTransfom [#62250](https://github.com/ClickHouse/ClickHouse/pull/62250) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix PartsSplitter [#62268](https://github.com/ClickHouse/ClickHouse/pull/62268) ([Nikita Taranov](https://github.com/nickitat)).
* Analyzer: Fix alias to parametrized view resolution [#62274](https://github.com/ClickHouse/ClickHouse/pull/62274) ([Dmitry Novik](https://github.com/novikd)).
* Analyzer: Fix name resolution from parent scopes [#62281](https://github.com/ClickHouse/ClickHouse/pull/62281) ([Dmitry Novik](https://github.com/novikd)).
* Fix argMax with nullable non native numeric column [#62285](https://github.com/ClickHouse/ClickHouse/pull/62285) ([Raúl Marín](https://github.com/Algunenano)).
* Fix BACKUP and RESTORE of a materialized view in Ordinary database [#62295](https://github.com/ClickHouse/ClickHouse/pull/62295) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix data race on scalars in Context [#62305](https://github.com/ClickHouse/ClickHouse/pull/62305) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix primary key in materialized view [#62319](https://github.com/ClickHouse/ClickHouse/pull/62319) ([Murat Khairulin](https://github.com/mxwell)).
* Do not build multithread insert pipeline for tables without support [#62333](https://github.com/ClickHouse/ClickHouse/pull/62333) ([vdimir](https://github.com/vdimir)).
* Fix analyzer with positional arguments in distributed query [#62362](https://github.com/ClickHouse/ClickHouse/pull/62362) ([flynn](https://github.com/ucasfl)).
* Fix filter pushdown from additional_table_filters in Merge engine in analyzer [#62398](https://github.com/ClickHouse/ClickHouse/pull/62398) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix GLOBAL IN table queries with analyzer. [#62409](https://github.com/ClickHouse/ClickHouse/pull/62409) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Respect settings truncate_on_insert/create_new_file_on_insert in s3/hdfs/azure engines during partitioned write [#62425](https://github.com/ClickHouse/ClickHouse/pull/62425) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix backup restore path for AzureBlobStorage [#62447](https://github.com/ClickHouse/ClickHouse/pull/62447) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Fix SimpleSquashingChunksTransform [#62451](https://github.com/ClickHouse/ClickHouse/pull/62451) ([Nikita Taranov](https://github.com/nickitat)).
* Fix capture of nested lambda. [#62462](https://github.com/ClickHouse/ClickHouse/pull/62462) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix validation of special MergeTree columns [#62498](https://github.com/ClickHouse/ClickHouse/pull/62498) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Avoid crash when reading protobuf with recursive types [#62506](https://github.com/ClickHouse/ClickHouse/pull/62506) ([Raúl Marín](https://github.com/Algunenano)).
* Fix a bug moving one partition from one to itself [#62524](https://github.com/ClickHouse/ClickHouse/pull/62524) ([helifu](https://github.com/helifu)).
* Fix scalar subquery in LIMIT [#62567](https://github.com/ClickHouse/ClickHouse/pull/62567) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Try to fix segfault in Hive engine [#62578](https://github.com/ClickHouse/ClickHouse/pull/62578) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix memory leak in groupArraySorted [#62597](https://github.com/ClickHouse/ClickHouse/pull/62597) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix crash in largestTriangleThreeBuckets [#62646](https://github.com/ClickHouse/ClickHouse/pull/62646) ([Raúl Marín](https://github.com/Algunenano)).
* Fix tumble[Start,End] and hop[Start,End] for bigger resolutions [#62705](https://github.com/ClickHouse/ClickHouse/pull/62705) ([Jordi Villar](https://github.com/jrdi)).
* Fix argMin/argMax combinator state [#62708](https://github.com/ClickHouse/ClickHouse/pull/62708) ([Raúl Marín](https://github.com/Algunenano)).
* Fix temporary data in cache failing because of cache lock contention optimization [#62715](https://github.com/ClickHouse/ClickHouse/pull/62715) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix crash in function `mergeTreeIndex` [#62762](https://github.com/ClickHouse/ClickHouse/pull/62762) ([Anton Popov](https://github.com/CurtizJ)).
* fix: update: nested materialized columns: size check fixes [#62773](https://github.com/ClickHouse/ClickHouse/pull/62773) ([Eliot Hautefeuille](https://github.com/hileef)).
* Fix FINAL modifier is not respected in CTE with analyzer [#62811](https://github.com/ClickHouse/ClickHouse/pull/62811) ([Duc Canh Le](https://github.com/canhld94)).
* Fix crash in function `formatRow` with `JSON` format and HTTP interface [#62840](https://github.com/ClickHouse/ClickHouse/pull/62840) ([Anton Popov](https://github.com/CurtizJ)).
* Azure: fix building final url from endpoint object [#62850](https://github.com/ClickHouse/ClickHouse/pull/62850) ([Daniel Pozo Escalona](https://github.com/danipozo)).
* Fix GCD codec [#62853](https://github.com/ClickHouse/ClickHouse/pull/62853) ([Nikita Taranov](https://github.com/nickitat)).
* Fix LowCardinality(Nullable) key in hyperrectangle [#62866](https://github.com/ClickHouse/ClickHouse/pull/62866) ([Amos Bird](https://github.com/amosbird)).
* Fix fromUnixtimestamp in joda syntax while the input value beyond UInt32 [#62901](https://github.com/ClickHouse/ClickHouse/pull/62901) ([KevinyhZou](https://github.com/KevinyhZou)).
* Disable optimize_rewrite_aggregate_function_with_if for sum(nullable) [#62912](https://github.com/ClickHouse/ClickHouse/pull/62912) ([Raúl Marín](https://github.com/Algunenano)).
* Fix PREWHERE for StorageBuffer with different source table column types. [#62916](https://github.com/ClickHouse/ClickHouse/pull/62916) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix temporary data in cache incorrectly processing failure of cache key directory creation [#62925](https://github.com/ClickHouse/ClickHouse/pull/62925) ([Kseniia Sumarokova](https://github.com/kssenii)).
* gRPC: fix crash on IPv6 peer connection [#62978](https://github.com/ClickHouse/ClickHouse/pull/62978) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* Fix possible CHECKSUM_DOESNT_MATCH (and others) during replicated fetches [#62987](https://github.com/ClickHouse/ClickHouse/pull/62987) ([Azat Khuzhin](https://github.com/azat)).
* Fix terminate with uncaught exception in temporary data in cache [#62998](https://github.com/ClickHouse/ClickHouse/pull/62998) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix optimize_rewrite_aggregate_function_with_if implicit cast [#62999](https://github.com/ClickHouse/ClickHouse/pull/62999) ([Raúl Marín](https://github.com/Algunenano)).
* Fix unhandled exception in ~RestorerFromBackup [#63040](https://github.com/ClickHouse/ClickHouse/pull/63040) ([Vitaly Baranov](https://github.com/vitlibar)).
* Do not remove server constants from GROUP BY key for secondary query. [#63047](https://github.com/ClickHouse/ClickHouse/pull/63047) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix incorrect judgement of of monotonicity of function abs [#63097](https://github.com/ClickHouse/ClickHouse/pull/63097) ([Duc Canh Le](https://github.com/canhld94)).
* Make sanity check of settings worse [#63119](https://github.com/ClickHouse/ClickHouse/pull/63119) ([Raúl Marín](https://github.com/Algunenano)).
* Set server name for SSL handshake in MongoDB engine [#63122](https://github.com/ClickHouse/ClickHouse/pull/63122) ([Alexander Gololobov](https://github.com/davenger)).
* Use user specified db instead of "config" for MongoDB wire protocol version check [#63126](https://github.com/ClickHouse/ClickHouse/pull/63126) ([Alexander Gololobov](https://github.com/davenger)).
* Format SQL security option only in `CREATE VIEW` queries. [#63136](https://github.com/ClickHouse/ClickHouse/pull/63136) ([pufit](https://github.com/pufit)).
#### CI Fix or Improvement (changelog entry is not required)
* ... [#62044](https://github.com/ClickHouse/ClickHouse/pull/62044) ([Max K.](https://github.com/maxknv)).
* We won't fail the job when GH fails to retrieve the job ID and URLs. [#62651](https://github.com/ClickHouse/ClickHouse/pull/62651) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Decouple some work from https://github.com/ClickHouse/ClickHouse/pull/61464 to simplify sync. [#62739](https://github.com/ClickHouse/ClickHouse/pull/62739) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Add `isort` config fo the first-party imports; fail build reports on non-success statuses. [#62786](https://github.com/ClickHouse/ClickHouse/pull/62786) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Move all Labels around to have it in a single place. [#62919](https://github.com/ClickHouse/ClickHouse/pull/62919) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* ... [#63035](https://github.com/ClickHouse/ClickHouse/pull/63035) ([Aleksei Filatov](https://github.com/aalexfvk)).
* ... [#63108](https://github.com/ClickHouse/ClickHouse/pull/63108) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
#### NO CL ENTRY
* NO CL ENTRY: 'Revert "Revert "Updated format settings references in the docs (datetime.md)""'. [#61442](https://github.com/ClickHouse/ClickHouse/pull/61442) ([Kruglov Pavel](https://github.com/Avogar)).
* NO CL ENTRY: 'Write `binary version -> commit hash` mapping to CI database (in private)'. [#61544](https://github.com/ClickHouse/ClickHouse/pull/61544) ([Nikita Taranov](https://github.com/nickitat)).
* NO CL ENTRY: 'Fix flaky tests 2 (stateless, integration) '. [#61869](https://github.com/ClickHouse/ClickHouse/pull/61869) ([Nikita Fomichev](https://github.com/fm4v)).
* NO CL ENTRY: 'Fix PR [#60656](https://github.com/ClickHouse/ClickHouse/issues/60656) for install check tests'. [#61910](https://github.com/ClickHouse/ClickHouse/pull/61910) ([Chun-Sheng, Li](https://github.com/peter279k)).
* NO CL ENTRY: '00002_log_and_exception_messages_formatting: exclude one more format string'. [#62190](https://github.com/ClickHouse/ClickHouse/pull/62190) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* NO CL ENTRY: 'Revert "Resubmit 'Update invalidate_query_response on dictionary startup'"'. [#62230](https://github.com/ClickHouse/ClickHouse/pull/62230) ([Raúl Marín](https://github.com/Algunenano)).
* NO CL ENTRY: 'Fix contributor name vulnerability'. [#62357](https://github.com/ClickHouse/ClickHouse/pull/62357) ([Anita Hammer](https://github.com/anitahammer)).
* NO CL ENTRY: 'Revert "Rich syntax highlighting in the client"'. [#62508](https://github.com/ClickHouse/ClickHouse/pull/62508) ([Raúl Marín](https://github.com/Algunenano)).
* NO CL ENTRY: 'Revert "Revert "Rich syntax highlighting in the client""'. [#62512](https://github.com/ClickHouse/ClickHouse/pull/62512) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* NO CL ENTRY: 'Revert "[feature]: allow to attach parts from a different disk"'. [#62549](https://github.com/ClickHouse/ClickHouse/pull/62549) ([Alexander Tokmakov](https://github.com/tavplubix)).
* NO CL ENTRY: 'Revert "More optimal loading of marks"'. [#62577](https://github.com/ClickHouse/ClickHouse/pull/62577) ([Nikita Taranov](https://github.com/nickitat)).
* NO CL ENTRY: 'Revert "Speed up `splitByRegexp`"'. [#62692](https://github.com/ClickHouse/ClickHouse/pull/62692) ([Robert Schulze](https://github.com/rschu1ze)).
* NO CL ENTRY: 'Get rid of merge_commit in style check autofix'. [#62835](https://github.com/ClickHouse/ClickHouse/pull/62835) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* NO CL ENTRY: 'Revert "CI: add FT to MQ remove Style from master"'. [#62927](https://github.com/ClickHouse/ClickHouse/pull/62927) ([Max K.](https://github.com/maxknv)).
* NO CL ENTRY: 'Unflake 02813_func_now_and_alias'. [#62932](https://github.com/ClickHouse/ClickHouse/pull/62932) ([Robert Schulze](https://github.com/rschu1ze)).
* NO CL ENTRY: 'Revert "Enable custom parquet encoder by default"'. [#63153](https://github.com/ClickHouse/ClickHouse/pull/63153) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Update protobuf to v25.1 [#58020](https://github.com/ClickHouse/ClickHouse/pull/58020) ([Mikhail Koviazin](https://github.com/mkmkme)).
* boringssl --> OpenSSL 3.2 [#59870](https://github.com/ClickHouse/ClickHouse/pull/59870) ([Robert Schulze](https://github.com/rschu1ze)).
* Enable all access control improvements by default (even without config.xml) [#60153](https://github.com/ClickHouse/ClickHouse/pull/60153) ([Azat Khuzhin](https://github.com/azat)).
* Change back how receive_timeout is handled for INSERTs [#60302](https://github.com/ClickHouse/ClickHouse/pull/60302) ([Azat Khuzhin](https://github.com/azat)).
* Context getGlobalTemporaryVolume use shared lock [#60997](https://github.com/ClickHouse/ClickHouse/pull/60997) ([Maksim Kita](https://github.com/kitaisreal)).
* Do nothing in `waitForOutdatedPartsToBeLoaded()` if loading is not required [#61232](https://github.com/ClickHouse/ClickHouse/pull/61232) ([Sergei Trifonov](https://github.com/serxa)).
* Fix db iterator wait during async metrics collection [#61534](https://github.com/ClickHouse/ClickHouse/pull/61534) ([Sergei Trifonov](https://github.com/serxa)).
* Fix 02943_rmt_alter_metadata_merge_checksum_mismatch flakiness [#61594](https://github.com/ClickHouse/ClickHouse/pull/61594) ([Azat Khuzhin](https://github.com/azat)).
* Stream rows when reading from system.replicas [#61784](https://github.com/ClickHouse/ClickHouse/pull/61784) ([Alexander Gololobov](https://github.com/davenger)).
* Skip more sanity checks for secondary create queries [#61799](https://github.com/ClickHouse/ClickHouse/pull/61799) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Fix 00002_log_and_exception_messages_formatting [#61882](https://github.com/ClickHouse/ClickHouse/pull/61882) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Add test for [#53352](https://github.com/ClickHouse/ClickHouse/issues/53352) [#61886](https://github.com/ClickHouse/ClickHouse/pull/61886) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Test: tuple elimination with analyzer [#61887](https://github.com/ClickHouse/ClickHouse/pull/61887) ([Igor Nikonov](https://github.com/devcrafter)).
* Fix performance test `aggregating_merge_tree_simple_aggregate_function_string` [#61931](https://github.com/ClickHouse/ClickHouse/pull/61931) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Fix some crashes with analyzer and group_by_use_nulls. [#61933](https://github.com/ClickHouse/ClickHouse/pull/61933) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* fix a race in refreshable view [#61936](https://github.com/ClickHouse/ClickHouse/pull/61936) ([Han Fei](https://github.com/hanfei1991)).
* Follow up to [#60452](https://github.com/ClickHouse/ClickHouse/issues/60452) [#61954](https://github.com/ClickHouse/ClickHouse/pull/61954) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Update 02916_move_partition_inactive_replica.sql [#61955](https://github.com/ClickHouse/ClickHouse/pull/61955) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Check for "SYSTEM STOP MERGES" primarily for MERGE_PARTS/MUTATE_PART [#61976](https://github.com/ClickHouse/ClickHouse/pull/61976) ([Azat Khuzhin](https://github.com/azat)).
* CI: failover for job_url request from gh [#61986](https://github.com/ClickHouse/ClickHouse/pull/61986) ([Max K.](https://github.com/maxknv)).
* CI: remove unnecessary job url for Mark release ready [#61991](https://github.com/ClickHouse/ClickHouse/pull/61991) ([Max K.](https://github.com/maxknv)).
* Update version after release [#61994](https://github.com/ClickHouse/ClickHouse/pull/61994) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Update version_date.tsv and changelogs after v24.3.1.2672-lts [#61996](https://github.com/ClickHouse/ClickHouse/pull/61996) ([robot-clickhouse](https://github.com/robot-clickhouse)).
* [RFC] Send LOGICAL_ERRORs to sentry [#61997](https://github.com/ClickHouse/ClickHouse/pull/61997) ([Azat Khuzhin](https://github.com/azat)).
* Fix scalars create as select [#61998](https://github.com/ClickHouse/ClickHouse/pull/61998) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix clickhouse-test [#62016](https://github.com/ClickHouse/ClickHouse/pull/62016) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix logs saving in DatabaseReplicated tests [#62019](https://github.com/ClickHouse/ClickHouse/pull/62019) ([Nikolay Degterinsky](https://github.com/evillique)).
* fix npy big endianness [#62020](https://github.com/ClickHouse/ClickHouse/pull/62020) ([豪肥肥](https://github.com/HowePa)).
* Update analyzer_tech_debt.txt [#62035](https://github.com/ClickHouse/ClickHouse/pull/62035) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Add analyzer pattern to 00002_log_and_exception_messages_formatting [#62038](https://github.com/ClickHouse/ClickHouse/pull/62038) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix clickhouse-test in case of missing .reference file [#62041](https://github.com/ClickHouse/ClickHouse/pull/62041) ([Azat Khuzhin](https://github.com/azat)).
* Fix optimize_arithmetic_operations_in_aggregate_functions [#62046](https://github.com/ClickHouse/ClickHouse/pull/62046) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Update DatabaseOnDisk.cpp [#62049](https://github.com/ClickHouse/ClickHouse/pull/62049) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Ignore IfChainToMultiIfPass if returned type changed. [#62059](https://github.com/ClickHouse/ClickHouse/pull/62059) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Support more that 255 replicas in system table [#62064](https://github.com/ClickHouse/ClickHouse/pull/62064) ([Alexander Gololobov](https://github.com/davenger)).
* Fix stress tests for analyzer due to experimental WINDOW VIEW (by disabling it) [#62065](https://github.com/ClickHouse/ClickHouse/pull/62065) ([Azat Khuzhin](https://github.com/azat)).
* Fix type for ConvertInToEqualPass [#62066](https://github.com/ClickHouse/ClickHouse/pull/62066) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Remove Dead Code [#62082](https://github.com/ClickHouse/ClickHouse/pull/62082) ([jsc0218](https://github.com/jsc0218)).
* Revert output Pretty in tty [#62090](https://github.com/ClickHouse/ClickHouse/pull/62090) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* More than 255 replicas in ReplicatedTableStatus [#62127](https://github.com/ClickHouse/ClickHouse/pull/62127) ([Alexander Gololobov](https://github.com/davenger)).
* Fix upgrade check [#62136](https://github.com/ClickHouse/ClickHouse/pull/62136) ([Raúl Marín](https://github.com/Algunenano)).
* Fix 0320_long_values_pretty_are_not_cut_if_single [#62150](https://github.com/ClickHouse/ClickHouse/pull/62150) ([Duc Canh Le](https://github.com/canhld94)).
* Update NuRaft [#62156](https://github.com/ClickHouse/ClickHouse/pull/62156) ([Antonio Andelic](https://github.com/antonio2368)).
* Unify lightweight mutation control [#62159](https://github.com/ClickHouse/ClickHouse/pull/62159) ([Raúl Marín](https://github.com/Algunenano)).
* Add some logging [#62160](https://github.com/ClickHouse/ClickHouse/pull/62160) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix xml part in documentation [#62169](https://github.com/ClickHouse/ClickHouse/pull/62169) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* Remove a few nested include dependencies [#62170](https://github.com/ClickHouse/ClickHouse/pull/62170) ([Raúl Marín](https://github.com/Algunenano)).
* User specific S3 endpoint for Backup/Restore on cluster [#62175](https://github.com/ClickHouse/ClickHouse/pull/62175) ([Antonio Andelic](https://github.com/antonio2368)).
* Bump `double-conversion` submodule [#62177](https://github.com/ClickHouse/ClickHouse/pull/62177) ([Robert Schulze](https://github.com/rschu1ze)).
* Fix `retention` docs [#62182](https://github.com/ClickHouse/ClickHouse/pull/62182) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* Fix 02503_insert_storage_snapshot [#62194](https://github.com/ClickHouse/ClickHouse/pull/62194) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Use ClickHouse threads in NuRaft [#62196](https://github.com/ClickHouse/ClickHouse/pull/62196) ([alesapin](https://github.com/alesapin)).
* Unflake and speed up `01676_clickhouse_client_autocomplete` [#62209](https://github.com/ClickHouse/ClickHouse/pull/62209) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* Fix build with clang-19 (master) [#62212](https://github.com/ClickHouse/ClickHouse/pull/62212) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Add more documentation to the release script [#62213](https://github.com/ClickHouse/ClickHouse/pull/62213) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Update version_date.tsv and changelogs after v24.3.2.23-lts [#62214](https://github.com/ClickHouse/ClickHouse/pull/62214) ([robot-clickhouse](https://github.com/robot-clickhouse)).
* Unlimited output_format_pretty_max_value_width for --pager [#62221](https://github.com/ClickHouse/ClickHouse/pull/62221) ([Azat Khuzhin](https://github.com/azat)).
* Include table name in paranoid checks [#62232](https://github.com/ClickHouse/ClickHouse/pull/62232) ([Raúl Marín](https://github.com/Algunenano)).
* Fix another logical error in group_by_use_nulls. [#62236](https://github.com/ClickHouse/ClickHouse/pull/62236) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Remove reverted PR from 24.3 changelog [#62251](https://github.com/ClickHouse/ClickHouse/pull/62251) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix lambda(tuple(x), x + 1) syntax in analyzer [#62253](https://github.com/ClickHouse/ClickHouse/pull/62253) ([vdimir](https://github.com/vdimir)).
* Fix s3-style link mapper for gcs [#62257](https://github.com/ClickHouse/ClickHouse/pull/62257) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* Disable 02980_dist_insert_readonly_replica for SMT [#62260](https://github.com/ClickHouse/ClickHouse/pull/62260) ([Igor Nikonov](https://github.com/devcrafter)).
* Fix logical error from fs cache in stress test [#62261](https://github.com/ClickHouse/ClickHouse/pull/62261) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Remove more nested includes [#62264](https://github.com/ClickHouse/ClickHouse/pull/62264) ([Raúl Marín](https://github.com/Algunenano)).
* Don't access static members through instance [#62265](https://github.com/ClickHouse/ClickHouse/pull/62265) ([Robert Schulze](https://github.com/rschu1ze)).
* Add fault injection for "Cannot allocate thread" [#62266](https://github.com/ClickHouse/ClickHouse/pull/62266) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Analyzer: limit maximal size of column in constant folding [#62273](https://github.com/ClickHouse/ClickHouse/pull/62273) ([vdimir](https://github.com/vdimir)).
* Fix __actionName, add tests for internal functions direct call [#62287](https://github.com/ClickHouse/ClickHouse/pull/62287) ([vdimir](https://github.com/vdimir)).
* Fix `mortonEncode` `use-of-uninitialized-value` [#62288](https://github.com/ClickHouse/ClickHouse/pull/62288) ([Antonio Andelic](https://github.com/antonio2368)).
* Add local address to network exception messages [#62300](https://github.com/ClickHouse/ClickHouse/pull/62300) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Better handling of errors from azure storage [#62306](https://github.com/ClickHouse/ClickHouse/pull/62306) ([Anton Popov](https://github.com/CurtizJ)).
* Cleanup SSH-based authentication code [#62307](https://github.com/ClickHouse/ClickHouse/pull/62307) ([Robert Schulze](https://github.com/rschu1ze)).
* Fix data race in LocalServer [#62309](https://github.com/ClickHouse/ClickHouse/pull/62309) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix for postprocess script: print correct count for frame [#62317](https://github.com/ClickHouse/ClickHouse/pull/62317) ([Antonio Andelic](https://github.com/antonio2368)).
* Use DETACHED_DIR_NAME everywhere [#62318](https://github.com/ClickHouse/ClickHouse/pull/62318) ([Azat Khuzhin](https://github.com/azat)).
* Fix small typo in Dictionary source loader [#62320](https://github.com/ClickHouse/ClickHouse/pull/62320) ([Sean Haynes](https://github.com/seandhaynes)).
* Fix optimize_uniq_to_count when only prefix of key is matched [#62325](https://github.com/ClickHouse/ClickHouse/pull/62325) ([vdimir](https://github.com/vdimir)).
* More complex locking in `StackTrace::toString` [#62332](https://github.com/ClickHouse/ClickHouse/pull/62332) ([Antonio Andelic](https://github.com/antonio2368)).
* Analyzer: Fix PREWHERE with lambda functions [#62336](https://github.com/ClickHouse/ClickHouse/pull/62336) ([vdimir](https://github.com/vdimir)).
* Reduce log levels for ReadWriteBufferFromHTTP retries [#62348](https://github.com/ClickHouse/ClickHouse/pull/62348) ([Alexander Gololobov](https://github.com/davenger)).
* dhparams are not enabled by default [#62365](https://github.com/ClickHouse/ClickHouse/pull/62365) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Disable window view with analyzer properly [#62367](https://github.com/ClickHouse/ClickHouse/pull/62367) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Don't access static members through instance, pt. II [#62375](https://github.com/ClickHouse/ClickHouse/pull/62375) ([Robert Schulze](https://github.com/rschu1ze)).
* Use function isNotDistinctFrom only in join key [#62387](https://github.com/ClickHouse/ClickHouse/pull/62387) ([vdimir](https://github.com/vdimir)).
* CI: fix for docs only pr [#62396](https://github.com/ClickHouse/ClickHouse/pull/62396) ([Max K.](https://github.com/maxknv)).
* Fix one phony case [#62397](https://github.com/ClickHouse/ClickHouse/pull/62397) ([Raúl Marín](https://github.com/Algunenano)).
* CI: test merge queue [#62403](https://github.com/ClickHouse/ClickHouse/pull/62403) ([Max K.](https://github.com/maxknv)).
* Add part name to check part exception message [#62408](https://github.com/ClickHouse/ClickHouse/pull/62408) ([Igor Nikonov](https://github.com/devcrafter)).
* CI: disable finish check for mq [#62410](https://github.com/ClickHouse/ClickHouse/pull/62410) ([Max K.](https://github.com/maxknv)).
* Fix logical error 'numbers_storage.step != UInt64{0}' [#62413](https://github.com/ClickHouse/ClickHouse/pull/62413) ([Kruglov Pavel](https://github.com/Avogar)).
* Don't check overflow in arrayDotProduct in undefined sanitizer [#62417](https://github.com/ClickHouse/ClickHouse/pull/62417) ([Kruglov Pavel](https://github.com/Avogar)).
* Avoid uncaught exception for onFault handler [#62418](https://github.com/ClickHouse/ClickHouse/pull/62418) ([Azat Khuzhin](https://github.com/azat)).
* Update StorageFileLog.cpp [#62421](https://github.com/ClickHouse/ClickHouse/pull/62421) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Support for a tiny feature in stateless tests image [#62427](https://github.com/ClickHouse/ClickHouse/pull/62427) ([Nikolay Degterinsky](https://github.com/evillique)).
* OptimizeGroupByInjectiveFunctionsPass remove unused constant [#62433](https://github.com/ClickHouse/ClickHouse/pull/62433) ([Maksim Kita](https://github.com/kitaisreal)).
* Perf script update path in documentation [#62439](https://github.com/ClickHouse/ClickHouse/pull/62439) ([Maksim Kita](https://github.com/kitaisreal)).
* Fix completion of available ClickHouse tools [#62446](https://github.com/ClickHouse/ClickHouse/pull/62446) ([Azat Khuzhin](https://github.com/azat)).
* Use shared mutex for global stacktrace cache [#62453](https://github.com/ClickHouse/ClickHouse/pull/62453) ([Sergei Trifonov](https://github.com/serxa)).
* Keeper logging fixes [#62455](https://github.com/ClickHouse/ClickHouse/pull/62455) ([Alexander Gololobov](https://github.com/davenger)).
* Add profile events for azure disk [#62458](https://github.com/ClickHouse/ClickHouse/pull/62458) ([Anton Popov](https://github.com/CurtizJ)).
* CI: gh runner version 2.315.0 [#62461](https://github.com/ClickHouse/ClickHouse/pull/62461) ([Max K.](https://github.com/maxknv)).
* Fix clang-tidy build [#62478](https://github.com/ClickHouse/ClickHouse/pull/62478) ([Robert Schulze](https://github.com/rschu1ze)).
* Fix random clang tidy warning [#62480](https://github.com/ClickHouse/ClickHouse/pull/62480) ([Raúl Marín](https://github.com/Algunenano)).
* Disable external sort in 01592_long_window_functions1 [#62487](https://github.com/ClickHouse/ClickHouse/pull/62487) ([Nikita Taranov](https://github.com/nickitat)).
* CI: merge sync pr on push to master [#62488](https://github.com/ClickHouse/ClickHouse/pull/62488) ([Max K.](https://github.com/maxknv)).
* Don't allow the fuzzer to change allow_experimental_analyzer [#62500](https://github.com/ClickHouse/ClickHouse/pull/62500) ([Raúl Marín](https://github.com/Algunenano)).
* Update comment in 02911_support_alias_column_in_indices.sql [#62503](https://github.com/ClickHouse/ClickHouse/pull/62503) ([Robert Schulze](https://github.com/rschu1ze)).
* Add test for [#26674](https://github.com/ClickHouse/ClickHouse/issues/26674) [#62504](https://github.com/ClickHouse/ClickHouse/pull/62504) ([Raúl Marín](https://github.com/Algunenano)).
* Add test for Bug 37909 [#62509](https://github.com/ClickHouse/ClickHouse/pull/62509) ([Robert Schulze](https://github.com/rschu1ze)).
* Add test for bug [#33446](https://github.com/ClickHouse/ClickHouse/issues/33446) [#62511](https://github.com/ClickHouse/ClickHouse/pull/62511) ([Robert Schulze](https://github.com/rschu1ze)).
* Fix upgrade test. Again [#62513](https://github.com/ClickHouse/ClickHouse/pull/62513) ([Raúl Marín](https://github.com/Algunenano)).
* Blind fix for a flaky test [#62516](https://github.com/ClickHouse/ClickHouse/pull/62516) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Add asserts to COW example programs [#62543](https://github.com/ClickHouse/ClickHouse/pull/62543) ([Tomer Shafir](https://github.com/tomershafir)).
* CI: respect Sync status in the MQ [#62550](https://github.com/ClickHouse/ClickHouse/pull/62550) ([Max K.](https://github.com/maxknv)).
* Fix assertion in stress test [#62551](https://github.com/ClickHouse/ClickHouse/pull/62551) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix flaky 03093_bug37909_query_does_not_finish [#62553](https://github.com/ClickHouse/ClickHouse/pull/62553) ([Robert Schulze](https://github.com/rschu1ze)).
* Add test for issue 24607 [#62554](https://github.com/ClickHouse/ClickHouse/pull/62554) ([Robert Schulze](https://github.com/rschu1ze)).
* Follow up to [#61723](https://github.com/ClickHouse/ClickHouse/issues/61723) [#62555](https://github.com/ClickHouse/ClickHouse/pull/62555) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix integration-tests logs compression [#62556](https://github.com/ClickHouse/ClickHouse/pull/62556) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Try to fix if_transform_strings_to_enum performance test [#62558](https://github.com/ClickHouse/ClickHouse/pull/62558) ([Dmitry Novik](https://github.com/novikd)).
* Always use new analyzer in performance tests [#62564](https://github.com/ClickHouse/ClickHouse/pull/62564) ([Dmitry Novik](https://github.com/novikd)).
* CI: Add tests with Azure storage [#62565](https://github.com/ClickHouse/ClickHouse/pull/62565) ([Max K.](https://github.com/maxknv)).
* CI: fix for sync check status in mq [#62568](https://github.com/ClickHouse/ClickHouse/pull/62568) ([Max K.](https://github.com/maxknv)).
* Remove mentions of clean_deleted_rows from the documentation [#62570](https://github.com/ClickHouse/ClickHouse/pull/62570) ([Raúl Marín](https://github.com/Algunenano)).
* Try to fix Bugfix validation job [#62579](https://github.com/ClickHouse/ClickHouse/pull/62579) ([Raúl Marín](https://github.com/Algunenano)).
* CI: add FT to MQ remove Style from master [#62588](https://github.com/ClickHouse/ClickHouse/pull/62588) ([Max K.](https://github.com/maxknv)).
* CI: MQ sync status check fix [#62591](https://github.com/ClickHouse/ClickHouse/pull/62591) ([Max K.](https://github.com/maxknv)).
* Better retries in azure sdk [#62608](https://github.com/ClickHouse/ClickHouse/pull/62608) ([Anton Popov](https://github.com/CurtizJ)).
* Fix: msan in UUIDStringToNum [#62610](https://github.com/ClickHouse/ClickHouse/pull/62610) ([Igor Nikonov](https://github.com/devcrafter)).
* Fix a typo and grammar in `intersect` [#62622](https://github.com/ClickHouse/ClickHouse/pull/62622) ([Josh Rodriguez](https://github.com/jrodshua)).
* JOIN filter push down right stream filled crash fix [#62624](https://github.com/ClickHouse/ClickHouse/pull/62624) ([Maksim Kita](https://github.com/kitaisreal)).
* HashedDictionaryParallelLoader exception safe constructor [#62625](https://github.com/ClickHouse/ClickHouse/pull/62625) ([Maksim Kita](https://github.com/kitaisreal)).
* Fix 02366_kql_summarize [#62642](https://github.com/ClickHouse/ClickHouse/pull/62642) ([Nikita Taranov](https://github.com/nickitat)).
* Disable 02581_share_big_sets_between_mutation_tasks under sanitizers [#62645](https://github.com/ClickHouse/ClickHouse/pull/62645) ([Nikita Taranov](https://github.com/nickitat)).
* Don't allow relative paths when installing [#62658](https://github.com/ClickHouse/ClickHouse/pull/62658) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Update TransactionLog.cpp [#62663](https://github.com/ClickHouse/ClickHouse/pull/62663) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Disable aggregation-by-partitions optimisation with parallel replicas [#62697](https://github.com/ClickHouse/ClickHouse/pull/62697) ([Nikita Taranov](https://github.com/nickitat)).
* Fix build when `$CC` isn't set [#62700](https://github.com/ClickHouse/ClickHouse/pull/62700) ([Robert Schulze](https://github.com/rschu1ze)).
* Bump Azure to 1.8.0 [#62702](https://github.com/ClickHouse/ClickHouse/pull/62702) ([Robert Schulze](https://github.com/rschu1ze)).
* Fix --client-option for $CLICKHOUSE_CLIENT in .sh tests [#62710](https://github.com/ClickHouse/ClickHouse/pull/62710) ([Azat Khuzhin](https://github.com/azat)).
* Bump Azure to v1.10 [#62712](https://github.com/ClickHouse/ClickHouse/pull/62712) ([Robert Schulze](https://github.com/rschu1ze)).
* Bump Azure to v1.11 [#62713](https://github.com/ClickHouse/ClickHouse/pull/62713) ([Robert Schulze](https://github.com/rschu1ze)).
* `Trunc` docs fix [#62720](https://github.com/ClickHouse/ClickHouse/pull/62720) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* Unify a batch of tests [#62723](https://github.com/ClickHouse/ClickHouse/pull/62723) ([Raúl Marín](https://github.com/Algunenano)).
* Fix typo in exception explanation [#62740](https://github.com/ClickHouse/ClickHouse/pull/62740) ([Igor Markelov](https://github.com/ElderlyPassionFruit)).
* Block cannot allocate thread fault in noexcept functions in `MergeTreeTransaction` [#62751](https://github.com/ClickHouse/ClickHouse/pull/62751) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Log profile events send timings [#62752](https://github.com/ClickHouse/ClickHouse/pull/62752) ([Alexander Gololobov](https://github.com/davenger)).
* Follow-up to [#62700](https://github.com/ClickHouse/ClickHouse/issues/62700): Fix build when `$CC` isn't set [#62754](https://github.com/ClickHouse/ClickHouse/pull/62754) ([Robert Schulze](https://github.com/rschu1ze)).
* Analyzer: Fix exception message [#62755](https://github.com/ClickHouse/ClickHouse/pull/62755) ([Dmitry Novik](https://github.com/novikd)).
* Fix shellcheck style checking and issues [#62761](https://github.com/ClickHouse/ClickHouse/pull/62761) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Fix taking full part if part contains less than 'limit' rows [#62812](https://github.com/ClickHouse/ClickHouse/pull/62812) ([Artur Malchanau](https://github.com/Hexta)).
* TableEngineGrant: undo breaking change [#62828](https://github.com/ClickHouse/ClickHouse/pull/62828) ([Konstantin Bogdanov](https://github.com/thevar1able)).
* Fix typo [#62836](https://github.com/ClickHouse/ClickHouse/pull/62836) ([Robert Schulze](https://github.com/rschu1ze)).
* Revert "Add test for bug [#33446](https://github.com/ClickHouse/ClickHouse/issues/33446)" [#62844](https://github.com/ClickHouse/ClickHouse/pull/62844) ([Robert Schulze](https://github.com/rschu1ze)).
* SYSTEM DROP uninitialized cache fix [#62868](https://github.com/ClickHouse/ClickHouse/pull/62868) ([Maksim Kita](https://github.com/kitaisreal)).
* PlannerJoins remove unused comments [#62874](https://github.com/ClickHouse/ClickHouse/pull/62874) ([Maksim Kita](https://github.com/kitaisreal)).
* Add test for bug 33446 [#62880](https://github.com/ClickHouse/ClickHouse/pull/62880) ([Robert Schulze](https://github.com/rschu1ze)).
* Build kererberized_hadoop image by downloading commons-daemon via https [#62886](https://github.com/ClickHouse/ClickHouse/pull/62886) ([Ilya Golshtein](https://github.com/ilejn)).
* Update run.sh [#62889](https://github.com/ClickHouse/ClickHouse/pull/62889) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix build failed on clang-18 [#62899](https://github.com/ClickHouse/ClickHouse/pull/62899) ([LiuNeng](https://github.com/liuneng1994)).
* Fix parsing of nested proto messages [#62906](https://github.com/ClickHouse/ClickHouse/pull/62906) ([Raúl Marín](https://github.com/Algunenano)).
* Fix `00993_system_parts_race_condition_drop_zookeeper` [#62908](https://github.com/ClickHouse/ClickHouse/pull/62908) ([Nikita Taranov](https://github.com/nickitat)).
* Fix 03013_forbid_attach_table_if_active_replica_already_exists for private [#62909](https://github.com/ClickHouse/ClickHouse/pull/62909) ([Nikita Taranov](https://github.com/nickitat)).
* Fix 03015_optimize_final_rmt in private [#62911](https://github.com/ClickHouse/ClickHouse/pull/62911) ([Nikita Taranov](https://github.com/nickitat)).
* Add some functions to zookeeper client [#62920](https://github.com/ClickHouse/ClickHouse/pull/62920) ([alesapin](https://github.com/alesapin)).
* Fix build on Mac using clang-18 [#62954](https://github.com/ClickHouse/ClickHouse/pull/62954) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Reapply: CI add FT to MQ remove Style from master [#62963](https://github.com/ClickHouse/ClickHouse/pull/62963) ([Max K.](https://github.com/maxknv)).
* Fix flaky 03128_argMin_combinator_projection [#62965](https://github.com/ClickHouse/ClickHouse/pull/62965) ([Raúl Marín](https://github.com/Algunenano)).
* Better exception message [#62967](https://github.com/ClickHouse/ClickHouse/pull/62967) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix race in `executeJob` when updating exception message [#62972](https://github.com/ClickHouse/ClickHouse/pull/62972) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Remove incorrect assertion from DatabaseReplicated [#63000](https://github.com/ClickHouse/ClickHouse/pull/63000) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Update version_date.tsv and changelogs after v23.8.13.25-lts [#63014](https://github.com/ClickHouse/ClickHouse/pull/63014) ([robot-clickhouse](https://github.com/robot-clickhouse)).
* JIT sort description crash fix [#63024](https://github.com/ClickHouse/ClickHouse/pull/63024) ([Maksim Kita](https://github.com/kitaisreal)).
* CI: fix ci config to run FT in MQ [#63025](https://github.com/ClickHouse/ClickHouse/pull/63025) ([Max K.](https://github.com/maxknv)).
* Add test for [#42769](https://github.com/ClickHouse/ClickHouse/issues/42769) [#63033](https://github.com/ClickHouse/ClickHouse/pull/63033) ([Raúl Marín](https://github.com/Algunenano)).
* Fix suppressions for librdkafka data-race for statistics code [#63039](https://github.com/ClickHouse/ClickHouse/pull/63039) ([Azat Khuzhin](https://github.com/azat)).
* Enable 03015_optimize_final_rmt for SMT [#63042](https://github.com/ClickHouse/ClickHouse/pull/63042) ([Nikita Taranov](https://github.com/nickitat)).
* CI: fix job config for MQ [#63045](https://github.com/ClickHouse/ClickHouse/pull/63045) ([Max K.](https://github.com/maxknv)).
* Unfork and update curl to 8.7.1 [#63048](https://github.com/ClickHouse/ClickHouse/pull/63048) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix integration tests with old analyzer (and fix some leftovers of enabling it) [#63069](https://github.com/ClickHouse/ClickHouse/pull/63069) ([Azat Khuzhin](https://github.com/azat)).
* Get back test for old inter-server mode (DBMS_MIN_REVISION_WITH_INTERSERVER_SECRET non-v2) [#63070](https://github.com/ClickHouse/ClickHouse/pull/63070) ([Azat Khuzhin](https://github.com/azat)).
* Fix "invalid escape sequence" in clickhouse-test [#63073](https://github.com/ClickHouse/ClickHouse/pull/63073) ([Azat Khuzhin](https://github.com/azat)).
* Fix stateful tests [#63077](https://github.com/ClickHouse/ClickHouse/pull/63077) ([alesapin](https://github.com/alesapin)).
* Better highlighting of keywords [#63079](https://github.com/ClickHouse/ClickHouse/pull/63079) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Fix race in OpenSSL X509 store [#63109](https://github.com/ClickHouse/ClickHouse/pull/63109) ([Robert Schulze](https://github.com/rschu1ze)).
* Azure always green [#63120](https://github.com/ClickHouse/ClickHouse/pull/63120) ([alesapin](https://github.com/alesapin)).
* Fix flaky `03094_grouparraysorted_memory` [#63121](https://github.com/ClickHouse/ClickHouse/pull/63121) ([Antonio Andelic](https://github.com/antonio2368)).
* test for [#56564](https://github.com/ClickHouse/ClickHouse/issues/56564) [#63124](https://github.com/ClickHouse/ClickHouse/pull/63124) ([Denny Crane](https://github.com/den-crane)).
* Recursive CTE data race fix [#63125](https://github.com/ClickHouse/ClickHouse/pull/63125) ([Maksim Kita](https://github.com/kitaisreal)).
* add test for [#55360](https://github.com/ClickHouse/ClickHouse/issues/55360) [#63127](https://github.com/ClickHouse/ClickHouse/pull/63127) ([flynn](https://github.com/ucasfl)).
* add tests for [#47217](https://github.com/ClickHouse/ClickHouse/issues/47217), [#55965](https://github.com/ClickHouse/ClickHouse/issues/55965) [#63128](https://github.com/ClickHouse/ClickHouse/pull/63128) ([Denny Crane](https://github.com/den-crane)).
* Revert "Merge pull request [#60598](https://github.com/ClickHouse/ClickHouse/issues/60598) from jrdi/week-default-mode" [#63157](https://github.com/ClickHouse/ClickHouse/pull/63157) ([Jordi Villar](https://github.com/jrdi)).

2
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@ -4,7 +4,7 @@ sidebar_position: 30
sidebar_label: Replicated
---
# [experimental] Replicated
# Replicated
The engine is based on the [Atomic](../../engines/database-engines/atomic.md) engine. It supports replication of metadata via DDL log being written to ZooKeeper and executed on all of the replicas for a given database.

6
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View File

@ -17,6 +17,7 @@ CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
name2 [type2] [DEFAULT|MATERIALIZED|ALIAS expr2],
...
) ENGINE = EmbeddedRocksDB([ttl, rocksdb_dir, read_only]) PRIMARY KEY(primary_key_name)
[ SETTINGS name=value, ... ]
```
Engine parameters:
@ -29,6 +30,11 @@ Engine parameters:
- columns other than the primary key will be serialized in binary as `rocksdb` value in corresponding order.
- queries with key `equals` or `in` filtering will be optimized to multi keys lookup from `rocksdb`.
Engine settings:
- `optimize_for_bulk_insert` – Table is optimized for bulk insertions (insert pipeline will create SST files and import to rocksdb database instead of writing to memtables); default value: `1`.
- `bulk_insert_block_size` - Minimum size of SST files (in term of rows) created by bulk insertion; default value: `1048449`.
Example:
``` sql

2
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@ -8,6 +8,8 @@ sidebar_label: HDFS
This engine provides integration with the [Apache Hadoop](https://en.wikipedia.org/wiki/Apache_Hadoop) ecosystem by allowing to manage data on [HDFS](https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html) via ClickHouse. This engine is similar to the [File](../../../engines/table-engines/special/file.md#table_engines-file) and [URL](../../../engines/table-engines/special/url.md#table_engines-url) engines, but provides Hadoop-specific features.
This feature is not supported by ClickHouse engineers, and it is known to have a sketchy quality. In case of any problems, fix them yourself and submit a pull request.
## Usage {#usage}
``` sql

46
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@ -1,19 +1,19 @@
---
slug: /en/engines/table-engines/mergetree-family/invertedindexes
sidebar_label: Inverted Indexes
sidebar_label: Full-text Indexes
description: Quickly find search terms in text.
keywords: [full-text search, text search, inverted, index, indices]
---
# Full-text Search using Inverted Indexes [experimental]
# Full-text Search using Full-text Indexes [experimental]
Inverted indexes are an experimental type of [secondary indexes](/docs/en/engines/table-engines/mergetree-family/mergetree.md/#available-types-of-indices) which provide fast text search
Full-text indexes are an experimental type of [secondary indexes](/docs/en/engines/table-engines/mergetree-family/mergetree.md/#available-types-of-indices) which provide fast text search
capabilities for [String](/docs/en/sql-reference/data-types/string.md) or [FixedString](/docs/en/sql-reference/data-types/fixedstring.md)
columns. The main idea of an inverted index is to store a mapping from "terms" to the rows which contain these terms. "Terms" are
columns. The main idea of a full-text index is to store a mapping from "terms" to the rows which contain these terms. "Terms" are
tokenized cells of the string column. For example, the string cell "I will be a little late" is by default tokenized into six terms "I", "will",
"be", "a", "little" and "late". Another kind of tokenizer is n-grams. For example, the result of 3-gram tokenization will be 21 terms "I w",
" wi", "wil", "ill", "ll ", "l b", " be" etc. The more fine-granular the input strings are tokenized, the bigger but also the more
useful the resulting inverted index will be.
useful the resulting full-text index will be.
<div class='vimeo-container'>
<iframe src="//www.youtube.com/embed/O_MnyUkrIq8"
@ -28,26 +28,26 @@ useful the resulting inverted index will be.
</div>
:::note
Inverted indexes are experimental and should not be used in production environments yet. They may change in the future in backward-incompatible
Full-text indexes are experimental and should not be used in production environments yet. They may change in the future in backward-incompatible
ways, for example with respect to their DDL/DQL syntax or performance/compression characteristics.
:::
## Usage
To use inverted indexes, first enable them in the configuration:
To use full-text indexes, first enable them in the configuration:
```sql
SET allow_experimental_inverted_index = true;
```
An inverted index can be defined on a string column using the following syntax
An full-text index can be defined on a string column using the following syntax
``` sql
CREATE TABLE tab
(
`key` UInt64,
`str` String,
INDEX inv_idx(str) TYPE inverted(0) GRANULARITY 1
INDEX inv_idx(str) TYPE full_text(0) GRANULARITY 1
)
ENGINE = MergeTree
ORDER BY key
@ -55,20 +55,20 @@ ORDER BY key
where `N` specifies the tokenizer:
- `inverted(0)` (or shorter: `inverted()`) set the tokenizer to "tokens", i.e. split strings along spaces,
- `inverted(N)` with `N` between 2 and 8 sets the tokenizer to "ngrams(N)"
- `full_text(0)` (or shorter: `full_text()`) set the tokenizer to "tokens", i.e. split strings along spaces,
- `full_text(N)` with `N` between 2 and 8 sets the tokenizer to "ngrams(N)"
The maximum rows per postings list can be specified as the second parameter. This parameter can be used to control postings list sizes to avoid generating huge postings list files. The following variants exist:
- `inverted(ngrams, max_rows_per_postings_list)`: Use given max_rows_per_postings_list (assuming it is not 0)
- `inverted(ngrams, 0)`: No limitation of maximum rows per postings list
- `inverted(ngrams)`: Use a default maximum rows which is 64K.
- `full_text(ngrams, max_rows_per_postings_list)`: Use given max_rows_per_postings_list (assuming it is not 0)
- `full_text(ngrams, 0)`: No limitation of maximum rows per postings list
- `full_text(ngrams)`: Use a default maximum rows which is 64K.
Being a type of skipping index, inverted indexes can be dropped or added to a column after table creation:
Being a type of skipping index, full-text indexes can be dropped or added to a column after table creation:
``` sql
ALTER TABLE tab DROP INDEX inv_idx;
ALTER TABLE tab ADD INDEX inv_idx(s) TYPE inverted(2);
ALTER TABLE tab ADD INDEX inv_idx(s) TYPE full_text(2);
```
To use the index, no special functions or syntax are required. Typical string search predicates automatically leverage the index. As
@ -83,9 +83,9 @@ SELECT * from tab WHERE multiSearchAny(str, ['Hello', 'World']);
SELECT * from tab WHERE hasToken(str, 'Hello');
```
The inverted index also works on columns of type `Array(String)`, `Array(FixedString)`, `Map(String)` and `Map(String)`.
The full-text index also works on columns of type `Array(String)`, `Array(FixedString)`, `Map(String)` and `Map(String)`.
Like for other secondary indices, each column part has its own inverted index. Furthermore, each inverted index is internally divided into
Like for other secondary indices, each column part has its own full-text index. Furthermore, each full-text index is internally divided into
"segments". The existence and size of the segments are generally transparent to users but the segment size determines the memory consumption
during index construction (e.g. when two parts are merged). Configuration parameter "max_digestion_size_per_segment" (default: 256 MB)
controls the amount of data read consumed from the underlying column before a new segment is created. Incrementing the parameter raises the
@ -94,7 +94,7 @@ average to evaluate a query.
## Full-text search of the Hacker News dataset
Let's look at the performance improvements of inverted indexes on a large dataset with lots of text. We will use 28.7M rows of comments on the popular Hacker News website. Here is the table without an inverted index:
Let's look at the performance improvements of full-text indexes on a large dataset with lots of text. We will use 28.7M rows of comments on the popular Hacker News website. Here is the table without an full-text index:
```sql
CREATE TABLE hackernews (
@ -162,11 +162,11 @@ Notice it takes 3 seconds to execute the query:
1 row in set. Elapsed: 3.001 sec. Processed 28.74 million rows, 9.75 GB (9.58 million rows/s., 3.25 GB/s.)
```
We will use `ALTER TABLE` and add an inverted index on the lowercase of the `comment` column, then materialize it (which can take a while - wait for it to materialize):
We will use `ALTER TABLE` and add an full-text index on the lowercase of the `comment` column, then materialize it (which can take a while - wait for it to materialize):
```sql
ALTER TABLE hackernews
ADD INDEX comment_lowercase(lower(comment)) TYPE inverted;
ADD INDEX comment_lowercase(lower(comment)) TYPE full_text;
ALTER TABLE hackernews MATERIALIZE INDEX comment_lowercase;
```
@ -204,9 +204,9 @@ WHERE hasToken(lower(comment), 'avx') AND hasToken(lower(comment), 'sve');
```
:::note
Unlike other secondary indices, inverted indexes (for now) map to row numbers (row ids) instead of granule ids. The reason for this design
Unlike other secondary indices, full-text indexes (for now) map to row numbers (row ids) instead of granule ids. The reason for this design
is performance. In practice, users often search for multiple terms at once. For example, filter predicate `WHERE s LIKE '%little%' OR s LIKE
'%big%'` can be evaluated directly using an inverted index by forming the union of the row id lists for terms "little" and "big". This also
'%big%'` can be evaluated directly using an full-text index by forming the union of the row id lists for terms "little" and "big". This also
means that the parameter `GRANULARITY` supplied to index creation has no meaning (it may be removed from the syntax in the future).
:::

7
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@ -287,9 +287,9 @@ The number of columns in the primary key is not explicitly limited. Depending on
A long primary key will negatively affect the insert performance and memory consumption, but extra columns in the primary key do not affect ClickHouse performance during `SELECT` queries.
You can create a table without a primary key using the `ORDER BY tuple()` syntax. In this case, ClickHouse stores data in the order of inserting. If you want to save data order when inserting data by `INSERT ... SELECT` queries, set [max_insert_threads = 1](/docs/en/operations/settings/settings.md/#settings-max-insert-threads).
You can create a table without a primary key using the `ORDER BY tuple()` syntax. In this case, ClickHouse stores data in the order of inserting. If you want to save data order when inserting data by `INSERT ... SELECT` queries, set [max_insert_threads = 1](/docs/en/operations/settings/settings.md/#max-insert-threads).
To select data in the initial order, use [single-threaded](/docs/en/operations/settings/settings.md/#settings-max_threads) `SELECT` queries.
To select data in the initial order, use [single-threaded](/docs/en/operations/settings/settings.md/#max_threads) `SELECT` queries.
### Choosing a Primary Key that Differs from the Sorting Key {#choosing-a-primary-key-that-differs-from-the-sorting-key}
@ -344,7 +344,7 @@ In the example below, the index can’t be used.
SELECT count() FROM table WHERE CounterID = 34 OR URL LIKE '%upyachka%'
```
To check whether ClickHouse can use the index when running a query, use the settings [force_index_by_date](/docs/en/operations/settings/settings.md/#settings-force_index_by_date) and [force_primary_key](/docs/en/operations/settings/settings.md/#force-primary-key).
To check whether ClickHouse can use the index when running a query, use the settings [force_index_by_date](/docs/en/operations/settings/settings.md/#force_index_by_date) and [force_primary_key](/docs/en/operations/settings/settings.md/#force-primary-key).
The key for partitioning by month allows reading only those data blocks which contain dates from the proper range. In this case, the data block may contain data for many dates (up to an entire month). Within a block, data is sorted by primary key, which might not contain the date as the first column. Because of this, using a query with only a date condition that does not specify the primary key prefix will cause more data to be read than for a single date.
@ -769,6 +769,7 @@ In addition to local block devices, ClickHouse supports these storage types:
- [`web` for read-only from web](#web-storage)
- [`cache` for local caching](/docs/en/operations/storing-data.md/#using-local-cache)
- [`s3_plain` for backups to S3](/docs/en/operations/backup#backuprestore-using-an-s3-disk)
- [`s3_plain_rewritable` for immutable, non-replicated tables in S3](/docs/en/operations/storing-data.md#s3-plain-rewritable-storage)
## Using Multiple Block Devices for Data Storage {#table_engine-mergetree-multiple-volumes}

2
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@ -113,7 +113,7 @@ You can specify any existing ZooKeeper cluster and the system will use a directo
If ZooKeeper is not set in the config file, you can’t create replicated tables, and any existing replicated tables will be read-only.
ZooKeeper is not used in `SELECT` queries because replication does not affect the performance of `SELECT` and queries run just as fast as they do for non-replicated tables. When querying distributed replicated tables, ClickHouse behavior is controlled by the settings [max_replica_delay_for_distributed_queries](/docs/en/operations/settings/settings.md/#settings-max_replica_delay_for_distributed_queries) and [fallback_to_stale_replicas_for_distributed_queries](/docs/en/operations/settings/settings.md/#settings-fallback_to_stale_replicas_for_distributed_queries).
ZooKeeper is not used in `SELECT` queries because replication does not affect the performance of `SELECT` and queries run just as fast as they do for non-replicated tables. When querying distributed replicated tables, ClickHouse behavior is controlled by the settings [max_replica_delay_for_distributed_queries](/docs/en/operations/settings/settings.md/#max_replica_delay_for_distributed_queries) and [fallback_to_stale_replicas_for_distributed_queries](/docs/en/operations/settings/settings.md/#fallback_to_stale_replicas_for_distributed_queries).
For each `INSERT` query, approximately ten entries are added to ZooKeeper through several transactions. (To be more precise, this is for each inserted block of data; an INSERT query contains one block or one block per `max_insert_block_size = 1048576` rows.) This leads to slightly longer latencies for `INSERT` compared to non-replicated tables. But if you follow the recommendations to insert data in batches of no more than one `INSERT` per second, it does not create any problems. The entire ClickHouse cluster used for coordinating one ZooKeeper cluster has a total of several hundred `INSERTs` per second. The throughput on data inserts (the number of rows per second) is just as high as for non-replicated data.

2
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@ -83,7 +83,7 @@ When creating a table, the following settings are applied:
#### join_any_take_last_row
[join_any_take_last_row](/docs/en/operations/settings/settings.md/#settings-join_any_take_last_row)
[join_any_take_last_row](/docs/en/operations/settings/settings.md/#join_any_take_last_row)
#### join_use_nulls
#### persistent

7
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@ -10,7 +10,8 @@ The RecipeNLG dataset is available for download [here](https://recipenlg.cs.put.
1. Go to the download page [https://recipenlg.cs.put.poznan.pl/dataset](https://recipenlg.cs.put.poznan.pl/dataset).
1. Accept Terms and Conditions and download zip file.
1. Unpack the zip file with `unzip`. You will get the `full_dataset.csv` file.
1. Option: Using the `md5sum dataset.zip` to validate the zip file and it should be equal to `3a168dfd0912bb034225619b3586ce76`.
1. Unpack the zip file with `unzip dataset.zip`. You will get the `full_dataset.csv` file in the `dataset` directory.
## Create a Table
@ -72,7 +73,7 @@ Result:
``` text
┌─count()─┐
│ 2231141 │
│ 2231142 │
└─────────┘
```
@ -115,7 +116,7 @@ Result:
│ egg │ 160507 │
│ baking powder │ 148277 │
│ lemon juice │ 146414 │
│ Salt │ 122557 │
│ Salt │ 122558 │
│ cinnamon │ 117927 │
│ sour cream │ 116682 │
│ cream cheese │ 114423 │

56
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@ -11,7 +11,7 @@ import CodeBlock from '@theme/CodeBlock';
# Install ClickHouse
You have three options for getting up and running with ClickHouse:
You have four options for getting up and running with ClickHouse:
- **[ClickHouse Cloud](https://clickhouse.com/cloud/):** The official ClickHouse as a service, - built by, maintained and supported by the creators of ClickHouse
- **[Quick Install](#quick-install):** an easy-to-download binary for testing and developing with ClickHouse
@ -32,37 +32,49 @@ On Linux, macOS and FreeBSD:
1. If you are just getting started and want to see what ClickHouse can do, the simplest way to download ClickHouse locally is to run the
following command. It downloads a single binary for your operating system that can be used to run the ClickHouse server,
clickhouse-client, clickhouse-local, ClickHouse Keeper, and other tools:
`clickhouse-client`, `clickhouse-local`, ClickHouse Keeper, and other tools:
```bash
curl https://clickhouse.com/ | sh
```
```bash
curl https://clickhouse.com/ | sh
```
1. Run the following command to start the ClickHouse server:
2. Run the following command to start [clickhouse-local](../operations/utilities/clickhouse-local.md):
```bash
./clickhouse
```
`clickhouse-local` allows you to process local and remote files using ClickHouse's powerful SQL and without a need for configuration. Table
data is stored in a temporary location, meaning that after a restart of `clickhouse-local` previously created tables are no longer
available.
As an alternative, you can start the ClickHouse server with this command ...
```bash
./clickhouse server
```
The first time you run this script, the necessary files and folders are created in the current directory, then the server starts.
... and open a new terminal to connect to the server with `clickhouse-client`:
1. Open a new terminal and use the **./clickhouse client** to connect to your service:
```bash
./clickhouse client
```
```bash
./clickhouse client
```
```response
./clickhouse client
ClickHouse client version 24.5.1.117 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 24.5.1.
```response
./clickhouse client
ClickHouse client version 23.2.1.1501 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 23.2.1.
local-host :)
```
local-host :)
```
You are ready to start sending DDL and SQL commands to ClickHouse!
Table data is stored in the current directory and still available after a restart of ClickHouse server. If necessary, you can pass
`-C config.xml` as an additional command line argument to `./clickhouse server` and provide further configuration in a configuration
file. All available configuration settings are documented [here](../operations/settings/settings.md) and in an [example configuration file
template](https://github.com/ClickHouse/ClickHouse/blob/master/programs/server/config.xml).
You are ready to start sending SQL commands to ClickHouse!
:::tip
The [Quick Start](/docs/en/quick-start.mdx) walks through the steps for creating tables and inserting data.
@ -377,14 +389,14 @@ build.
### macOS-only: Install with Homebrew
To install ClickHouse using [homebrew](https://brew.sh/), see [here](https://formulae.brew.sh/cask/clickhouse).
To install ClickHouse on macOS using [homebrew](https://brew.sh/), please see the ClickHouse [community homebrew formula](https://formulae.brew.sh/cask/clickhouse).
## Launch {#launch}
To start the server as a daemon, run:
``` bash
$ sudo clickhouse start
$ clickhouse start
```
There are also other ways to run ClickHouse:

29
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@ -91,6 +91,7 @@ The supported formats are:
| [MySQLDump](#mysqldump) | ✔ | ✗ |
| [DWARF](#dwarf) | ✔ | ✗ |
| [Markdown](#markdown) | ✗ | ✔ |
| [Form](#form) | ✔ | ✗ |
You can control some format processing parameters with the ClickHouse settings. For more information read the [Settings](/docs/en/operations/settings/settings-formats.md) section.
@ -2843,3 +2844,31 @@ FORMAT Markdown
```
Markdown table will be generated automatically and can be used on markdown-enabled platforms, like Github. This format is used only for output.
## Form {#form}
The Form format can be used to read or write a single record in the application/x-www-form-urlencoded format in which data is formatted `key1=value1&key2=value2`
Examples:
Given a file `data.tmp` placed in the `user_files` path with some URL encoded data:
```text
t_page=116&c.e=ls7xfkpm&c.tti.m=raf&rt.start=navigation&rt.bmr=390%2C11%2C10
```
```sql
SELECT * FROM file(data.tmp, Form) FORMAT vertical;
```
Result:
```text
Row 1:
──────
t_page: 116
c.e: ls7xfkpm
c.tti.m: raf
rt.start: navigation
rt.bmr: 390,11,10
```

6
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@ -327,7 +327,9 @@ Use buffering to avoid situations where a query processing error occurred after
## Setting a role with query parameters {#setting-role-with-query-parameters}
In certain scenarios, it might be required to set the granted role first, before executing the statement itself.
This is a new feature added in ClickHouse 24.4.
In specific scenarios, setting the granted role first might be required before executing the statement itself.
However, it is not possible to send `SET ROLE` and the statement together, as multi-statements are not allowed:
```
@ -346,7 +348,7 @@ To overcome this limitation, you could use the `role` query parameter instead:
curl -sS "http://localhost:8123?role=my_role" --data-binary "SELECT * FROM my_table;"
```
This will be an equivalent of executing `SET ROLE my_role` before the statement.
This will be the equivalent of executing `SET ROLE my_role` before the statement.
Additionally, it is possible to specify multiple `role` query parameters:

2
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View File

@ -172,7 +172,7 @@ Features:
### ClickVisual {#clickvisual}
[ClickVisual](https://clickvisual.gocn.vip/) ClickVisual is a lightweight open source log query, analysis and alarm visualization platform.
[ClickVisual](https://clickvisual.net/) ClickVisual is a lightweight open source log query, analysis and alarm visualization platform.
Features:

2
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View File

@ -76,7 +76,7 @@ ClickHouse, Inc. does **not** maintain the tools and libraries listed below and
- [clickhouse-maxmind-geoip](https://github.com/AlexeyKupershtokh/clickhouse-maxmind-geoip)
- AutoML
- [MindsDB](https://mindsdb.com/)
- [MindsDB](https://github.com/mindsdb/mindsdb) - Predictive AI layer for ClickHouse database.
- [MindsDB](https://github.com/mindsdb/mindsdb) - Integrates with ClickHouse, making data from ClickHouse accessible to a diverse range of AI/ML models.
## Programming Language Ecosystems {#programming-language-ecosystems}

4
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View File

@ -1189,7 +1189,7 @@ Expired time for HSTS in seconds. The default value is 0 means clickhouse disabl
## include_from {#include_from}
The path to the file with substitutions.
The path to the file with substitutions. Both XML and YAML formats are supported.
For more information, see the section “[Configuration files](../../operations/configuration-files.md#configuration_files)”.
@ -2860,7 +2860,7 @@ table functions, and dictionaries.
User wishing to see secrets must also have
[`format_display_secrets_in_show_and_select` format setting](../settings/formats#format_display_secrets_in_show_and_select)
turned on and a
[`displaySecretsInShowAndSelect`](../../sql-reference/statements/grant#grant-display-secrets) privilege.
[`displaySecretsInShowAndSelect`](../../sql-reference/statements/grant#display-secrets) privilege.
Possible values:

2
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View File

@ -37,4 +37,4 @@ In this case overcommit ratio is computed as number of allocated bytes divided b
If `memory_overcommit_ratio_denominator_for_user` for the query is equals to zero, overcommit tracker won't choose this query.
Waiting timeout is set by `global_memory_usage_overcommit_max_wait_microseconds` parameter in the configuration file.
Waiting timeout is set by `memory_usage_overcommit_max_wait_microseconds` parameter in the configuration file.

2
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@ -15,7 +15,7 @@ table functions, and dictionaries.
User wishing to see secrets must also have
[`display_secrets_in_show_and_select` server setting](../server-configuration-parameters/settings#display_secrets_in_show_and_select)
turned on and a
[`displaySecretsInShowAndSelect`](../../sql-reference/statements/grant#grant-display-secrets) privilege.
[`displaySecretsInShowAndSelect`](../../sql-reference/statements/grant#display-secrets) privilege.
Possible values:

26
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View File

@ -7,6 +7,8 @@ toc_max_heading_level: 2
# Core Settings
All below settings are also available in table [system.settings](/docs/en/operations/system-tables/settings).
## additional_table_filters
An additional filter expression that is applied after reading
@ -3931,19 +3933,6 @@ For example, `avg(if(cond, col, null))` can be rewritten to `avgOrNullIf(cond, c
Supported only with experimental analyzer (`allow_experimental_analyzer = 1`).
:::
## allow_experimental_database_replicated {#allow_experimental_database_replicated}
Enables to create databases with [Replicated](../../engines/database-engines/replicated.md) engine.
Possible values:
- 0 — Disabled.
- 1 — Enabled.
Default value: `0`.
Cloud default value: `1`.
## database_replicated_initial_query_timeout_sec {#database_replicated_initial_query_timeout_sec}
Sets how long initial DDL query should wait for Replicated database to process previous DDL queue entries in seconds.
@ -4384,17 +4373,6 @@ Possible values:
Default value: `ignore`.
## first_day_of_week
The first day of the week assumed by [`toStartOfInterval`](../../sql-reference/functions/date-time-functions.md#toStartOfInterval) function when using weeks as unit.
Possible values:
- Monday - Week starts on Monday
- Sunday - Week starts on Sunday
Default value: 'Monday'.
## optimize_move_to_prewhere {#optimize_move_to_prewhere}
Enables or disables automatic [PREWHERE](../../sql-reference/statements/select/prewhere.md) optimization in [SELECT](../../sql-reference/statements/select/index.md) queries.

32
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@ -28,7 +28,7 @@ Starting from 24.1 clickhouse version, it is possible to use a new configuration
It requires to specify:
1. `type` equal to `object_storage`
2. `object_storage_type`, equal to one of `s3`, `azure_blob_storage` (or just `azure` from `24.3`), `hdfs`, `local_blob_storage` (or just `local` from `24.3`), `web`.
Optionally, `metadata_type` can be specified (it is equal to `local` by default), but it can also be set to `plain`, `web`.
Optionally, `metadata_type` can be specified (it is equal to `local` by default), but it can also be set to `plain`, `web` and, starting from `24.4`, `plain_rewritable`.
Usage of `plain` metadata type is described in [plain storage section](/docs/en/operations/storing-data.md/#storing-data-on-webserver), `web` metadata type can be used only with `web` object storage type, `local` metadata type stores metadata files locally (each metadata files contains mapping to files in object storage and some additional meta information about them).
E.g. configuration option
@ -341,6 +341,36 @@ Configuration:
</s3_plain>
```
### Using S3 Plain Rewritable Storage {#s3-plain-rewritable-storage}
A new disk type `s3_plain_rewritable` was introduced in `24.4`.
Similar to the `s3_plain` disk type, it does not require additional storage for metadata files; instead, metadata is stored in S3.
Unlike `s3_plain` disk type, `s3_plain_rewritable` allows executing merges and supports INSERT operations.
[Mutations](/docs/en/sql-reference/statements/alter#mutations) and replication of tables are not supported.
A use case for this disk type are non-replicated `MergeTree` tables. Although the `s3` disk type is suitable for non-replicated
MergeTree tables, you may opt for the `s3_plain_rewritable` disk type if you do not require local metadata for the table and are
willing to accept a limited set of operations. This could be useful, for example, for system tables.
Configuration:
``` xml
<s3_plain_rewritable>
<type>s3_plain_rewritable</type>
<endpoint>https://s3.eu-west-1.amazonaws.com/clickhouse-eu-west-1.clickhouse.com/data/</endpoint>
<use_environment_credentials>1</use_environment_credentials>
</s3_plain_rewritable>
```
is equal to
``` xml
<s3_plain_rewritable>
<type>object_storage</type>
<object_storage_type>s3</object_storage_type>
<metadata_type>plain_rewritable</metadata_type>
<endpoint>https://s3.eu-west-1.amazonaws.com/clickhouse-eu-west-1.clickhouse.com/data/</endpoint>
<use_environment_credentials>1</use_environment_credentials>
</s3_plain_rewritable>
```
### Using Azure Blob Storage {#azure-blob-storage}
`MergeTree` family table engines can store data to [Azure Blob Storage](https://azure.microsoft.com/en-us/services/storage/blobs/) using a disk with type `azure_blob_storage`.

2
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@ -22,4 +22,4 @@ Columns:
- `0` — The row describes a partial revoke.
- `1` — The row describes a grant.
- `grant_option` ([UInt8](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Permission is granted `WITH GRANT OPTION`, see [GRANT](../../sql-reference/statements/grant.md#grant-privigele-syntax).
- `grant_option` ([UInt8](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Permission is granted `WITH GRANT OPTION`, see [GRANT](../../sql-reference/statements/grant.md#granting-privilege-syntax).

2
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@ -111,7 +111,7 @@ On newer Linux kernels transparent huge pages are alright.
$ echo 'madvise' | sudo tee /sys/kernel/mm/transparent_hugepage/enabled
```
If you want to modify the transparent huge pages setting permanently, editing the `/etc/default/grub` to add the `transparent_hugepage=never` to the `GRUB_CMDLINE_LINUX_DEFAULT` option:
If you want to modify the transparent huge pages setting permanently, editing the `/etc/default/grub` to add the `transparent_hugepage=madvise` to the `GRUB_CMDLINE_LINUX_DEFAULT` option:
```bash
$ GRUB_CMDLINE_LINUX_DEFAULT="transparent_hugepage=madvise ..."

112
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@ -505,9 +505,117 @@ HAVING uniqUpTo(4)(UserID) >= 5
`uniqUpTo(4)(UserID)` calculates the number of unique `UserID` values for each `SearchPhrase`, but it only counts up to 4 unique values. If there are more than 4 unique `UserID` values for a `SearchPhrase`, the function returns 5 (4 + 1). The `HAVING` clause then filters out the `SearchPhrase` values for which the number of unique `UserID` values is less than 5. This will give you a list of search keywords that were used by at least 5 unique users.
## sumMapFiltered(keys_to_keep)(keys, values)
## sumMapFiltered
Same behavior as [sumMap](../../sql-reference/aggregate-functions/reference/summap.md#agg_functions-summap) except that an array of keys is passed as a parameter. This can be especially useful when working with a high cardinality of keys.
This function behaves the same as [sumMap](../../sql-reference/aggregate-functions/reference/summap.md#agg_functions-summap) except that it also accepts an array of keys to filter with as a parameter. This can be especially useful when working with a high cardinality of keys.
**Syntax**
`sumMapFiltered(keys_to_keep)(keys, values)`
**Parameters**
- `keys_to_keep`: [Array](../data-types/array.md) of keys to filter with.
- `keys`: [Array](../data-types/array.md) of keys.
- `values`: [Array](../data-types/array.md) of values.
**Returned Value**
- Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys.
**Example**
Query:
```sql
CREATE TABLE sum_map
(
`date` Date,
`timeslot` DateTime,
`statusMap` Nested(status UInt16, requests UInt64)
)
ENGINE = Log
INSERT INTO sum_map VALUES
('2000-01-01', '2000-01-01 00:00:00', [1, 2, 3], [10, 10, 10]),
('2000-01-01', '2000-01-01 00:00:00', [3, 4, 5], [10, 10, 10]),
('2000-01-01', '2000-01-01 00:01:00', [4, 5, 6], [10, 10, 10]),
('2000-01-01', '2000-01-01 00:01:00', [6, 7, 8], [10, 10, 10]);
```
```sql
SELECT sumMapFiltered([1, 4, 8])(statusMap.status, statusMap.requests) FROM sum_map;
```
Result:
```response
┌─sumMapFiltered([1, 4, 8])(statusMap.status, statusMap.requests)─┐
1. │ ([1,4,8],[10,20,10]) │
└─────────────────────────────────────────────────────────────────┘
```
## sumMapFilteredWithOverflow
This function behaves the same as [sumMap](../../sql-reference/aggregate-functions/reference/summap.md#agg_functions-summap) except that it also accepts an array of keys to filter with as a parameter. This can be especially useful when working with a high cardinality of keys. It differs from the [sumMapFiltered](#summapfiltered) function in that it does summation with overflow - i.e. returns the same data type for the summation as the argument data type.
**Syntax**
`sumMapFilteredWithOverflow(keys_to_keep)(keys, values)`
**Parameters**
- `keys_to_keep`: [Array](../data-types/array.md) of keys to filter with.
- `keys`: [Array](../data-types/array.md) of keys.
- `values`: [Array](../data-types/array.md) of values.
**Returned Value**
- Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys.
**Example**
In this example we create a table `sum_map`, insert some data into it and then use both `sumMapFilteredWithOverflow` and `sumMapFiltered` and the `toTypeName` function for comparison of the result. Where `requests` was of type `UInt8` in the created table, `sumMapFiltered` has promoted the type of the summed values to `UInt64` to avoid overflow whereas `sumMapFilteredWithOverflow` has kept the type as `UInt8` which is not large enough to store the result - i.e. overflow has occurred.
Query:
```sql
CREATE TABLE sum_map
(
`date` Date,
`timeslot` DateTime,
`statusMap` Nested(status UInt8, requests UInt8)
)
ENGINE = Log
INSERT INTO sum_map VALUES
('2000-01-01', '2000-01-01 00:00:00', [1, 2, 3], [10, 10, 10]),
('2000-01-01', '2000-01-01 00:00:00', [3, 4, 5], [10, 10, 10]),
('2000-01-01', '2000-01-01 00:01:00', [4, 5, 6], [10, 10, 10]),
('2000-01-01', '2000-01-01 00:01:00', [6, 7, 8], [10, 10, 10]);
```
```sql
SELECT sumMapFilteredWithOverflow([1, 4, 8])(statusMap.status, statusMap.requests) as summap_overflow, toTypeName(summap_overflow) FROM sum_map;
```
```sql
SELECT sumMapFiltered([1, 4, 8])(statusMap.status, statusMap.requests) as summap, toTypeName(summap) FROM sum_map;
```
Result:
```response
┌─sum──────────────────┬─toTypeName(sum)───────────────────┐
1. │ ([1,4,8],[10,20,10]) │ Tuple(Array(UInt8), Array(UInt8)) │
└──────────────────────┴───────────────────────────────────┘
```
```response
┌─summap───────────────┬─toTypeName(summap)─────────────────┐
1. │ ([1,4,8],[10,20,10]) │ Tuple(Array(UInt8), Array(UInt64)) │
└──────────────────────┴────────────────────────────────────┘
```
## sequenceNextNode

43
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@ -7,15 +7,50 @@ sidebar_position: 6
Selects the first encountered value of a column.
By default, it ignores NULL values and returns the first NOT NULL value found in the column. As [`first_value`](../../../sql-reference/aggregate-functions/reference/first_value.md) if supports `RESPECT NULLS`, in which case it will select the first value passed, independently on whether it's NULL or not.
**Syntax**
```sql
any(column)
```
Aliases: `any_value`, [`first_value`](../reference/first_value.md).
**Parameters**
- `column`: The column name.
**Returned value**
By default, it ignores NULL values and returns the first NOT NULL value found in the column. Like [`first_value`](../../../sql-reference/aggregate-functions/reference/first_value.md) it supports `RESPECT NULLS`, in which case it will select the first value passed, independently on whether it's NULL or not.
:::note
The return type of the function is the same as the input, except for LowCardinality which is discarded. This means that given no rows as input it will return the default value of that type (0 for integers, or Null for a Nullable() column). You might use the `-OrNull` [combinator](../../../sql-reference/aggregate-functions/combinators.md) ) to modify this behaviour.
:::
:::warning
The query can be executed in any order and even in a different order each time, so the result of this function is indeterminate.
To get a determinate result, you can use the ‘min’ or ‘max’ function instead of ‘any’.
To get a determinate result, you can use the [`min`](../reference/min.md) or [`max`](../reference/max.md) function instead of `any`.
:::
In some cases, you can rely on the order of execution. This applies to cases when SELECT comes from a subquery that uses ORDER BY.
**Implementation details**
In some cases, you can rely on the order of execution. This applies to cases when `SELECT` comes from a subquery that uses `ORDER BY`.
When a `SELECT` query has the `GROUP BY` clause or at least one aggregate function, ClickHouse (in contrast to MySQL) requires that all expressions in the `SELECT`, `HAVING`, and `ORDER BY` clauses be calculated from keys or from aggregate functions. In other words, each column selected from the table must be used either in keys or inside aggregate functions. To get behavior like in MySQL, you can put the other columns in the `any` aggregate function.
- Alias: `any_value`, `first_value`.
**Example**
Query:
```sql
CREATE TABLE any_nulls (city Nullable(String)) ENGINE=Log;
INSERT INTO any_nulls (city) VALUES (NULL), ('Amsterdam'), ('New York'), ('Tokyo'), ('Valencia'), (NULL);
SELECT any(city) FROM any_nulls;
```
```response
┌─any(city)─┐
│ Amsterdam │
└───────────┘
```

44
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@ -0,0 +1,44 @@
---
slug: /en/sql-reference/aggregate-functions/reference/any_respect_nulls
sidebar_position: 103
---
# any_respect_nulls
Selects the first encountered value of a column, irregardless of whether it is a `NULL` value or not.
Alias: `any_value_respect_nulls`, `first_value_repect_nulls`.
**Syntax**
```sql
any_respect_nulls(column)
```
**Parameters**
- `column`: The column name.
**Returned value**
- The last value encountered, irregardless of whether it is a `NULL` value or not.
**Example**
Query:
```sql
CREATE TABLE any_nulls (city Nullable(String)) ENGINE=Log;
INSERT INTO any_nulls (city) VALUES (NULL), ('Amsterdam'), ('New York'), ('Tokyo'), ('Valencia'), (NULL);
SELECT any(city), any_respect_nulls(city) FROM any_nulls;
```
```response
┌─any(city)─┬─any_respect_nulls(city)─┐
│ Amsterdam │ ᴺᵁᴸᴸ │
└───────────┴─────────────────────────┘
```
**See Also**
- [any](../reference/any.md)

34
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@ -5,5 +5,35 @@ sidebar_position: 104
# anyLast
Selects the last value encountered.
The result is just as indeterminate as for the [any](../../../sql-reference/aggregate-functions/reference/any.md) function.
Selects the last value encountered. The result is just as indeterminate as for the [any](../../../sql-reference/aggregate-functions/reference/any.md) function.
**Syntax**
```sql
anyLast(column)
```
**Parameters**
- `column`: The column name.
**Returned value**
- The last value encountered.
**Example**
Query:
```sql
CREATE TABLE any_last_nulls (city Nullable(String)) ENGINE=Log;
INSERT INTO any_last_nulls (city) VALUES ('Amsterdam'),(NULL),('New York'),('Tokyo'),('Valencia'),(NULL);
SELECT anyLast(city) FROM any_last_nulls;
```
```response
┌─anyLast(city)─┐
│ Valencia │
└───────────────┘
```

39
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@ -0,0 +1,39 @@
---
slug: /en/sql-reference/aggregate-functions/reference/anylast_respect_nulls
sidebar_position: 104
---
# anyLast_respect_nulls
Selects the last value encountered, irregardless of whether it is `NULL` or not.
**Syntax**
```sql
anyLast_respect_nulls(column)
```
**Parameters**
- `column`: The column name.
**Returned value**
- The last value encountered, irregardless of whether it is `NULL` or not.
**Example**
Query:
```sql
CREATE TABLE any_last_nulls (city Nullable(String)) ENGINE=Log;
INSERT INTO any_last_nulls (city) VALUES ('Amsterdam'),(NULL),('New York'),('Tokyo'),('Valencia'),(NULL);
SELECT anyLast(city), anyLast_respect_nulls(city) FROM any_last_nulls;
```
```response
┌─anyLast(city)─┬─anyLast_respect_nulls(city)─┐
│ Valencia │ ᴺᵁᴸᴸ │
└───────────────┴─────────────────────────────┘
```

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@ -16,7 +16,9 @@ Standard aggregate functions:
- [avg](/docs/en/sql-reference/aggregate-functions/reference/avg.md)
- [any](/docs/en/sql-reference/aggregate-functions/reference/any.md)
- [stddevPop](/docs/en/sql-reference/aggregate-functions/reference/stddevpop.md)
- [stddevPopStable](/docs/en/sql-reference/aggregate-functions/reference/stddevpopstable.md)
- [stddevSamp](/docs/en/sql-reference/aggregate-functions/reference/stddevsamp.md)
- [stddevSampStable](/docs/en/sql-reference/aggregate-functions/reference/stddevsampstable.md)
- [varPop](/docs/en/sql-reference/aggregate-functions/reference/varpop.md)
- [varSamp](/docs/en/sql-reference/aggregate-functions/reference/varsamp.md)
- [corr](./corr.md)
@ -35,8 +37,10 @@ Standard aggregate functions:
ClickHouse-specific aggregate functions:
- [any](/docs/en/sql-reference/aggregate-functions/reference/any_respect_nulls.md)
- [anyHeavy](/docs/en/sql-reference/aggregate-functions/reference/anyheavy.md)
- [anyLast](/docs/en/sql-reference/aggregate-functions/reference/anylast.md)
- [anyLast](/docs/en/sql-reference/aggregate-functions/reference/anylast_respect_nulls.md)
- [boundingRatio](/docs/en/sql-reference/aggregate-functions/reference/boundrat.md)
- [first_value](/docs/en/sql-reference/aggregate-functions/reference/first_value.md)
- [last_value](/docs/en/sql-reference/aggregate-functions/reference/last_value.md)
@ -65,6 +69,9 @@ ClickHouse-specific aggregate functions:
- [groupBitmapXor](/docs/en/sql-reference/aggregate-functions/reference/groupbitmapxor.md)
- [sumWithOverflow](/docs/en/sql-reference/aggregate-functions/reference/sumwithoverflow.md)
- [sumMap](/docs/en/sql-reference/aggregate-functions/reference/summap.md)
- [sumMapWithOverflow](/docs/en/sql-reference/aggregate-functions/reference/summapwithoverflow.md)
- [sumMapFiltered](/docs/en/sql-reference/aggregate-functions/parametric-functions.md/#summapfiltered)
- [sumMapFilteredWithOverflow](/docs/en/sql-reference/aggregate-functions/parametric-functions.md/#summapfilteredwithoverflow)
- [minMap](/docs/en/sql-reference/aggregate-functions/reference/minmap.md)
- [maxMap](/docs/en/sql-reference/aggregate-functions/reference/maxmap.md)
- [skewSamp](/docs/en/sql-reference/aggregate-functions/reference/skewsamp.md)
@ -92,6 +99,7 @@ ClickHouse-specific aggregate functions:
- [quantileBFloat16Weighted](/docs/en/sql-reference/aggregate-functions/reference/quantilebfloat16.md#quantilebfloat16weighted)
- [quantileDD](/docs/en/sql-reference/aggregate-functions/reference/quantileddsketch.md#quantileddsketch)
- [simpleLinearRegression](/docs/en/sql-reference/aggregate-functions/reference/simplelinearregression.md)
- [singleValueOrNull](/docs/en/sql-reference/aggregate-functions/reference/singlevalueornull.md)
- [stochasticLinearRegression](/docs/en/sql-reference/aggregate-functions/reference/stochasticlinearregression.md)
- [stochasticLogisticRegression](/docs/en/sql-reference/aggregate-functions/reference/stochasticlogisticregression.md)
- [categoricalInformationValue](/docs/en/sql-reference/aggregate-functions/reference/categoricalinformationvalue.md)

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@ -0,0 +1,57 @@
---
slug: /en/sql-reference/aggregate-functions/reference/singlevalueornull
sidebar_position: 220
---
# singleValueOrNull
The aggregate function `singleValueOrNull` is used to implement subquery operators, such as `x = ALL (SELECT ...)`. It checks if there is only one unique non-NULL value in the data.
If there is only one unique value, it returns it. If there are zero or at least two distinct values, it returns NULL.
**Syntax**
``` sql
singleValueOrNull(x)
```
**Parameters**
- `x` — Column of any [data type](../../data-types/index.md).
**Returned values**
- The unique value, if there is only one unique non-NULL value in `x`.
- `NULL`, if there are zero or at least two distinct values.
**Examples**
Query:
``` sql
CREATE TABLE test (x UInt8 NULL) ENGINE=Log;
INSERT INTO test (x) VALUES (NULL), (NULL), (5), (NULL), (NULL);
SELECT singleValueOrNull(x) FROM test;
```
Result:
```response
┌─singleValueOrNull(x)─┐
│ 5 │
└──────────────────────┘
```
Query:
```sql
INSERT INTO test (x) VALUES (10);
SELECT singleValueOrNull(x) FROM test;
```
Result:
```response
┌─singleValueOrNull(x)─┐
│ ᴺᵁᴸᴸ │
└──────────────────────┘
```

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@ -7,10 +7,50 @@ sidebar_position: 30
The result is equal to the square root of [varPop](../../../sql-reference/aggregate-functions/reference/varpop.md).
Alias:
- `STD`
- `STDDEV_POP`
Aliases: `STD`, `STDDEV_POP`.
:::note
This function uses a numerically unstable algorithm. If you need [numerical stability](https://en.wikipedia.org/wiki/Numerical_stability) in calculations, use the `stddevPopStable` function. It works slower but provides a lower computational error.
:::
This function uses a numerically unstable algorithm. If you need [numerical stability](https://en.wikipedia.org/wiki/Numerical_stability) in calculations, use the [`stddevPopStable`](../reference/stddevpopstable.md) function. It works slower but provides a lower computational error.
:::
**Syntax**
```sql
stddevPop(x)
```
**Parameters**
- `x`: Population of values to find the standard deviation of. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Returned value**
Square root of standard deviation of `x`. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
DROP TABLE IF EXISTS test_data;
CREATE TABLE test_data
(
population UInt8,
)
ENGINE = Log;
INSERT INTO test_data VALUES (3),(3),(3),(4),(4),(5),(5),(7),(11),(15);
SELECT
stddevPop(population) AS stddev
FROM test_data;
```
Result:
```response
┌────────────stddev─┐
│ 3.794733192202055 │
└───────────────────┘
```

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@ -0,0 +1,49 @@
---
slug: /en/sql-reference/aggregate-functions/reference/stddevpopstable
sidebar_position: 30
---
# stddevPopStable
The result is equal to the square root of [varPop](../../../sql-reference/aggregate-functions/reference/varpop.md). Unlike [`stddevPop`](../reference/stddevpop.md), this function uses a numerically stable algorithm. It works slower but provides a lower computational error.
**Syntax**
```sql
stddevPopStable(x)
```
**Parameters**
- `x`: Population of values to find the standard deviation of. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Returned value**
Square root of standard deviation of `x`. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
DROP TABLE IF EXISTS test_data;
CREATE TABLE test_data
(
population Float64,
)
ENGINE = Log;
INSERT INTO test_data SELECT randUniform(5.5, 10) FROM numbers(1000000)
SELECT
stddevPopStable(population) AS stddev
FROM test_data;
```
Result:
```response
┌─────────────stddev─┐
│ 1.2999977786592576 │
└────────────────────┘
```

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@ -10,5 +10,46 @@ The result is equal to the square root of [varSamp](../../../sql-reference/aggre
Alias: `STDDEV_SAMP`.
:::note
This function uses a numerically unstable algorithm. If you need [numerical stability](https://en.wikipedia.org/wiki/Numerical_stability) in calculations, use the `stddevSampStable` function. It works slower but provides a lower computational error.
:::
This function uses a numerically unstable algorithm. If you need [numerical stability](https://en.wikipedia.org/wiki/Numerical_stability) in calculations, use the [`stddevSampStable`](../reference/stddevsampstable.md) function. It works slower but provides a lower computational error.
:::
**Syntax**
```sql
stddevSamp(x)
```
**Parameters**
- `x`: Values for which to find the square root of sample variance. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Returned value**
Square root of sample variance of `x`. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
DROP TABLE IF EXISTS test_data;
CREATE TABLE test_data
(
population UInt8,
)
ENGINE = Log;
INSERT INTO test_data VALUES (3),(3),(3),(4),(4),(5),(5),(7),(11),(15);
SELECT
stddevSamp(population)
FROM test_data;
```
Result:
```response
┌─stddevSamp(population)─┐
│ 4 │
└────────────────────────┘
```

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@ -0,0 +1,49 @@
---
slug: /en/sql-reference/aggregate-functions/reference/stddevsampstable
sidebar_position: 31
---
# stddevSampStable
The result is equal to the square root of [varSamp](../../../sql-reference/aggregate-functions/reference/varsamp.md). Unlike [`stddevSamp`](../reference/stddevsamp.md) This function uses a numerically stable algorithm. It works slower but provides a lower computational error.
**Syntax**
```sql
stddevSampStable(x)
```
**Parameters**
- `x`: Values for which to find the square root of sample variance. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Returned value**
Square root of sample variance of `x`. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
DROP TABLE IF EXISTS test_data;
CREATE TABLE test_data
(
population UInt8,
)
ENGINE = Log;
INSERT INTO test_data VALUES (3),(3),(3),(4),(4),(5),(5),(7),(11),(15);
SELECT
stddevSampStable(population)
FROM test_data;
```
Result:
```response
┌─stddevSampStable(population)─┐
│ 4 │
└──────────────────────────────┘
```

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@ -7,6 +7,56 @@ sidebar_position: 4
Calculates the sum. Only works for numbers.
**Syntax**
```sql
sum(num)
```
**Parameters**
- `num`: Column of numeric values. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Returned value**
- The sum of the values. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Example**
First we create a table `employees` and insert some fictional employee data into it.
Query:
```sql
CREATE TABLE employees
(
`id` UInt32,
`name` String,
`salary` UInt32
)
ENGINE = Log
```
```sql
INSERT INTO employees VALUES
(87432, 'John Smith', 45680),
(59018, 'Jane Smith', 72350),
(20376, 'Ivan Ivanovich', 58900),
(71245, 'Anastasia Ivanovna', 89210);
```
We query for the total amount of the employee salaries using the `sum` function.
Query:
```sql
SELECT sum(salary) FROM employees;
```
Result:
```response
┌─sum(salary)─┐
1. │ 266140 │
└─────────────┘
```

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@ -5,21 +5,35 @@ sidebar_position: 141
# sumMap
Syntax: `sumMap(key <Array>, value <Array>)` [Array type](../../data-types/array.md) or `sumMap(Tuple(key <Array>, value <Array>))` [Tuple type](../../data-types/tuple.md).
Totals a `value` array according to the keys specified in the `key` array. Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys without overflow.
Arguments:
**Syntax**
- `sumMap(key <Array>, value <Array>)` [Array type](../../data-types/array.md).
- `sumMap(Tuple(key <Array>, value <Array>))` [Tuple type](../../data-types/tuple.md).
Alias: `sumMappedArrays`.
Totals the `value` array according to the keys specified in the `key` array.
**Arguments**
Passing tuple of keys and values arrays is a synonym to passing two arrays of keys and values.
- `key`: [Array](../../data-types/array.md) of keys.
- `value`: [Array](../../data-types/array.md) of values.
Passing a tuple of key and value arrays is a synonym to passing separately an array of keys and an array of values.
:::note
The number of elements in `key` and `value` must be the same for each row that is totaled.
:::
Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys.
**Returned Value**
Example:
- Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys.
**Example**
First we create a table called `sum_map`, and insert some data into it. Arrays of keys and values are stored separately as a column called `statusMap` of [Nested](../../data-types/nested-data-structures/index.md) type, and together as a column called `statusMapTuple` of [tuple](../../data-types/tuple.md) type to illustrate the use of the two different syntaxes of this function described above.
Query:
``` sql
CREATE TABLE sum_map(
@ -31,13 +45,20 @@ CREATE TABLE sum_map(
),
statusMapTuple Tuple(Array(Int32), Array(Int32))
) ENGINE = Log;
```
```sql
INSERT INTO sum_map VALUES
('2000-01-01', '2000-01-01 00:00:00', [1, 2, 3], [10, 10, 10], ([1, 2, 3], [10, 10, 10])),
('2000-01-01', '2000-01-01 00:00:00', [3, 4, 5], [10, 10, 10], ([3, 4, 5], [10, 10, 10])),
('2000-01-01', '2000-01-01 00:01:00', [4, 5, 6], [10, 10, 10], ([4, 5, 6], [10, 10, 10])),
('2000-01-01', '2000-01-01 00:01:00', [6, 7, 8], [10, 10, 10], ([6, 7, 8], [10, 10, 10]));
```
Next, we query the table using the `sumMap` function, making use of both array and tuple type syntaxes:
Query:
``` sql
SELECT
timeslot,
sumMap(statusMap.status, statusMap.requests),
@ -46,6 +67,8 @@ FROM sum_map
GROUP BY timeslot
```
Result:
``` text
┌────────────timeslot─┬─sumMap(statusMap.status, statusMap.requests)─┬─sumMap(statusMapTuple)─────────┐
│ 2000-01-01 00:00:00 │ ([1,2,3,4,5],[10,10,20,10,10]) │ ([1,2,3,4,5],[10,10,20,10,10]) │
@ -54,5 +77,6 @@ GROUP BY timeslot
```
**See Also**
- [-Map combinator for Map datatype](../combinators.md#-map)
- [Map combinator for Map datatype](../combinators.md#-map)
- [sumMapWithOverflow](../reference/summapwithoverflow.md)

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@ -0,0 +1,92 @@
---
slug: /en/sql-reference/aggregate-functions/reference/summapwithoverflow
sidebar_position: 141
---
# sumMapWithOverflow
Totals a `value` array according to the keys specified in the `key` array. Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys.
It differs from the [sumMap](../reference/summap.md) function in that it does summation with overflow - i.e. returns the same data type for the summation as the argument data type.
**Syntax**
- `sumMapWithOverflow(key <Array>, value <Array>)` [Array type](../../data-types/array.md).
- `sumMapWithOverflow(Tuple(key <Array>, value <Array>))` [Tuple type](../../data-types/tuple.md).
**Arguments**
- `key`: [Array](../../data-types/array.md) of keys.
- `value`: [Array](../../data-types/array.md) of values.
Passing a tuple of key and value arrays is a synonym to passing separately an array of keys and an array of values.
:::note
The number of elements in `key` and `value` must be the same for each row that is totaled.
:::
**Returned Value**
- Returns a tuple of two arrays: keys in sorted order, and values ​​summed for the corresponding keys.
**Example**
First we create a table called `sum_map`, and insert some data into it. Arrays of keys and values are stored separately as a column called `statusMap` of [Nested](../../data-types/nested-data-structures/index.md) type, and together as a column called `statusMapTuple` of [tuple](../../data-types/tuple.md) type to illustrate the use of the two different syntaxes of this function described above.
Query:
``` sql
CREATE TABLE sum_map(
date Date,
timeslot DateTime,
statusMap Nested(
status UInt8,
requests UInt8
),
statusMapTuple Tuple(Array(Int8), Array(Int8))
) ENGINE = Log;
```
```sql
INSERT INTO sum_map VALUES
('2000-01-01', '2000-01-01 00:00:00', [1, 2, 3], [10, 10, 10], ([1, 2, 3], [10, 10, 10])),
('2000-01-01', '2000-01-01 00:00:00', [3, 4, 5], [10, 10, 10], ([3, 4, 5], [10, 10, 10])),
('2000-01-01', '2000-01-01 00:01:00', [4, 5, 6], [10, 10, 10], ([4, 5, 6], [10, 10, 10])),
('2000-01-01', '2000-01-01 00:01:00', [6, 7, 8], [10, 10, 10], ([6, 7, 8], [10, 10, 10]));
```
If we query the table using the `sumMap`, `sumMapWithOverflow` with the array type syntax, and `toTypeName` functions then we can see that
for the `sumMapWithOverflow` function, the data type of the summed values array is the same as the argument type, both `UInt8` (i.e. summation was done with overflow). For `sumMap` the data type of the summed values arrays has changed from `UInt8` to `UInt64` such that overflow does not occur.
Query:
``` sql
SELECT
timeslot,
toTypeName(sumMap(statusMap.status, statusMap.requests)),
toTypeName(sumMapWithOverflow(statusMap.status, statusMap.requests)),
FROM sum_map
GROUP BY timeslot
```
Equivalently we could have used the tuple syntax with for the same result.
``` sql
SELECT
timeslot,
toTypeName(sumMap(statusMapTuple)),
toTypeName(sumMapWithOverflow(statusMapTuple)),
FROM sum_map
GROUP BY timeslot
```
Result:
``` text
┌────────────timeslot─┬─toTypeName(sumMap(statusMap.status, statusMap.requests))─┬─toTypeName(sumMapWithOverflow(statusMap.status, statusMap.requests))─┐
1. │ 2000-01-01 00:01:00 │ Tuple(Array(UInt8), Array(UInt64)) │ Tuple(Array(UInt8), Array(UInt8)) │
2. │ 2000-01-01 00:00:00 │ Tuple(Array(UInt8), Array(UInt64)) │ Tuple(Array(UInt8), Array(UInt8)) │
└─────────────────────┴──────────────────────────────────────────────────────────┴──────────────────────────────────────────────────────────────────────┘
```
**See Also**
- [sumMap](../reference/summap.md)

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@ -8,3 +8,64 @@ sidebar_position: 140
Computes the sum of the numbers, using the same data type for the result as for the input parameters. If the sum exceeds the maximum value for this data type, it is calculated with overflow.
Only works for numbers.
**Syntax**
```sql
sumWithOverflow(num)
```
**Parameters**
- `num`: Column of numeric values. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Returned value**
- The sum of the values. [(U)Int*](../../data-types/int-uint.md), [Float*](../../data-types/float.md), [Decimal*](../../data-types/decimal.md).
**Example**
First we create a table `employees` and insert some fictional employee data into it. For this example we will select `salary` as `UInt16` such that a sum of these values may produce an overflow.
Query:
```sql
CREATE TABLE employees
(
`id` UInt32,
`name` String,
`monthly_salary` UInt16
)
ENGINE = Log
```
```sql
SELECT
sum(monthly_salary) AS no_overflow,
sumWithOverflow(monthly_salary) AS overflow,
toTypeName(no_overflow),
toTypeName(overflow)
FROM employees
```
We query for the total amount of the employee salaries using the `sum` and `sumWithOverflow` functions and show their types using the `toTypeName` function.
For the `sum` function the resulting type is `UInt64`, big enough to contain the sum, whilst for `sumWithOverflow` the resulting type remains as `UInt16`.
Query:
```sql
SELECT
sum(monthly_salary) AS no_overflow,
sumWithOverflow(monthly_salary) AS overflow,
toTypeName(no_overflow),
toTypeName(overflow),
FROM employees;
```
Result:
```response
┌─no_overflow─┬─overflow─┬─toTypeName(no_overflow)─┬─toTypeName(overflow)─┐
1. │ 118700 │ 53164 │ UInt64 │ UInt16 │
└─────────────┴──────────┴─────────────────────────┴──────────────────────┘
```

6
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@ -31,6 +31,8 @@ This function uses a numerically unstable algorithm. If you need numerical stabi
**Example**
Query:
```sql
DROP TABLE IF EXISTS test_data;
CREATE TABLE test_data
@ -47,6 +49,8 @@ SELECT
FROM test_data;
```
Result:
```response
3
```
@ -94,6 +98,8 @@ SELECT
FROM test_data;
```
Result:
```response
0.5999999999999999
```

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@ -8,7 +8,8 @@ sidebar_label: UUID
A Universally Unique Identifier (UUID) is a 16-byte value used to identify records. For detailed information about UUIDs, see [Wikipedia](https://en.wikipedia.org/wiki/Universally_unique_identifier).
While different UUID variants exist (see [here](https://datatracker.ietf.org/doc/html/draft-ietf-uuidrev-rfc4122bis)), ClickHouse does not validate that inserted UUIDs conform to a particular variant. UUIDs are internally treated as a sequence of 16 random bytes with [8-4-4-4-12 representation](https://en.wikipedia.org/wiki/Universally_unique_identifier#Textual_representation) at SQL level.
While different UUID variants exist (see [here](https://datatracker.ietf.org/doc/html/draft-ietf-uuidrev-rfc4122bis)), ClickHouse does not validate that inserted UUIDs conform to a particular variant.
UUIDs are internally treated as a sequence of 16 random bytes with [8-4-4-4-12 representation](https://en.wikipedia.org/wiki/Universally_unique_identifier#Textual_representation) at SQL level.
Example UUID value:
@ -22,6 +23,63 @@ The default UUID is all-zero. It is used, for example, when a new record is inse
00000000-0000-0000-0000-000000000000
```
Due to historical reasons, UUIDs are sorted by their second half.
UUIDs should therefore not be used directly in a primary key, sorting key, or partition key of a table.
Example:
``` sql
CREATE TABLE tab (uuid UUID) ENGINE = Memory;
INSERT INTO tab SELECT generateUUIDv4() FROM numbers(50);
SELECT * FROM tab ORDER BY uuid;
```
Result:
``` text
┌─uuid─────────────────────────────────┐
│ 36a0b67c-b74a-4640-803b-e44bb4547e3c │
│ 3a00aeb8-2605-4eec-8215-08c0ecb51112 │
│ 3fda7c49-282e-421a-85ab-c5684ef1d350 │
│ 16ab55a7-45f6-44a8-873c-7a0b44346b3e │
│ e3776711-6359-4f22-878d-bf290d052c85 │
│ [...] │
│ 9eceda2f-6946-40e3-b725-16f2709ca41a │
│ 03644f74-47ba-4020-b865-be5fd4c8c7ff │
│ ce3bc93d-ab19-4c74-b8cc-737cb9212099 │
│ b7ad6c91-23d6-4b5e-b8e4-a52297490b56 │
│ 06892f64-cc2d-45f3-bf86-f5c5af5768a9 │
└──────────────────────────────────────┘
```
As a workaround, the UUID can be converted to a type with an intuitive sort order.
Example using conversion to UInt128:
``` sql
CREATE TABLE tab (uuid UUID) ENGINE = Memory;
INSERT INTO tab SELECT generateUUIDv4() FROM numbers(50);
SELECT * FROM tab ORDER BY toUInt128(uuid);
```
Result:
```sql
┌─uuid─────────────────────────────────┐
│ 018b81cd-aca1-4e9c-9e56-a84a074dc1a8 │
│ 02380033-c96a-438e-913f-a2c67e341def │
│ 057cf435-7044-456a-893b-9183a4475cea │
│ 0a3c1d4c-f57d-44cc-8567-60cb0c46f76e │
│ 0c15bf1c-8633-4414-a084-7017eead9e41 │
│ [...] │
│ f808cf05-ea57-4e81-8add-29a195bde63d │
│ f859fb5d-764b-4a33-81e6-9e4239dae083 │
│ fb1b7e37-ab7b-421a-910b-80e60e2bf9eb │
│ fc3174ff-517b-49b5-bfe2-9b369a5c506d │
│ fece9bf6-3832-449a-b058-cd1d70a02c8b │
└──────────────────────────────────────┘
```
## Generating UUIDs
ClickHouse provides the [generateUUIDv4](../../sql-reference/functions/uuid-functions.md) function to generate random UUID version 4 values.

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View File

@ -1052,7 +1052,7 @@ toStartOfWeek(t[, mode[, timezone]])
**Arguments**
- `t` - a [Date](../data-types/date.md), [Date32](../data-types/date32.md), [DateTime](../data-types/datetime.md) or [DateTime64](../data-types/datetime64.md)
- `mode` - determines the first day of the week as described in the [toWeek()](date-time-functions#toweek) function. Default: 0
- `mode` - determines the first day of the week as described in the [toWeek()](date-time-functions#toweek) function
- `timezone` - Optional parameter, it behaves like any other conversion function
**Returned value**
@ -1415,7 +1415,8 @@ toStartOfFifteenMinutes(toDateTime('2023-04-21 10:23:00')): 2023-04-21 10:15:00
## toStartOfInterval
This function generalizes other `toStartOf*()` functions. For example,
This function generalizes other `toStartOf*()` functions with `toStartOfInterval(date_or_date_with_time, INTERVAL x unit [, time_zone])` syntax.
For example,
- `toStartOfInterval(t, INTERVAL 1 year)` returns the same as `toStartOfYear(t)`,
- `toStartOfInterval(t, INTERVAL 1 month)` returns the same as `toStartOfMonth(t)`,
- `toStartOfInterval(t, INTERVAL 1 day)` returns the same as `toStartOfDay(t)`,
@ -1440,7 +1441,7 @@ The calculation is performed relative to specific points in time:
(*) hour intervals are special: the calculation is always performed relative to 00:00:00 (midnight) of the current day. As a result, only
hour values between 1 and 23 are useful.
If unit `week` was specified, `toStartOfInterval` assumes by default that weeks start on Monday. You can change this behavior with setting [`first_day_of_week`](../../operations/settings/settings.md/#first-day-of-week)
If unit `week` was specified, `toStartOfInterval` assumes that weeks start on Monday. Note that this behavior is different from that of function `toStartOfWeek` in which weeks start by default on Sunday.
**See Also**
@ -1744,7 +1745,7 @@ Result:
```
## date\_diff
## date_diff
Returns the count of the specified `unit` boundaries crossed between the `startdate` and the `enddate`.
The difference is calculated using relative units, e.g. the difference between `2021-12-29` and `2022-01-01` is 3 days for unit `day` (see [toRelativeDayNum](#torelativedaynum)), 1 month for unit `month` (see [toRelativeMonthNum](#torelativemonthnum)) and 1 year for unit `year` (see [toRelativeYearNum](#torelativeyearnum)).
@ -1893,7 +1894,7 @@ Result:
**See Also**
- [toStartOfInterval](#tostartofintervaltime-or-data-interval-x-unit-time-zone)
- [toStartOfInterval](#tostartofintervaldate_or_date_with_time-interval-x-unit--time_zone)
## date\_add
@ -1907,6 +1908,12 @@ If the addition results in a value outside the bounds of the data type, the resu
date_add(unit, value, date)
```
Alternative syntax:
``` sql
date_add(date, INTERVAL value unit)
```
Aliases: `dateAdd`, `DATE_ADD`.
**Arguments**
@ -1946,6 +1953,20 @@ Result:
└───────────────────────────────────────────────┘
```
```sql
SELECT date_add(toDate('2018-01-01'), INTERVAL 3 YEAR);
```
Result:
```text
┌─plus(toDate('2018-01-01'), toIntervalYear(3))─┐
│ 2021-01-01 │
└───────────────────────────────────────────────┘
```
**See Also**
- [addDate](#addDate)
@ -1962,6 +1983,13 @@ If the subtraction results in a value outside the bounds of the data type, the r
date_sub(unit, value, date)
```
Alternative syntax:
``` sql
date_sub(date, INTERVAL value unit)
```
Aliases: `dateSub`, `DATE_SUB`.
**Arguments**
@ -2002,6 +2030,19 @@ Result:
└────────────────────────────────────────────────┘
```
``` sql
SELECT date_sub(toDate('2018-01-01'), INTERVAL 3 YEAR);
```
Result:
``` text
┌─minus(toDate('2018-01-01'), toIntervalYear(3))─┐
│ 2015-01-01 │
└────────────────────────────────────────────────┘
```
**See Also**
- [subDate](#subDate)

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@ -4,48 +4,72 @@ sidebar_label: SVG
title: "Functions for Generating SVG images from Geo data"
---
## Syntax
## Svg
Returns a string of select SVG element tags from Geo data.
**Syntax**
``` sql
SVG(geometry,[style])
Svg(geometry,[style])
```
### Parameters
Aliases: `SVG`, `svg`
- `geometry` — Geo data
- `style` — Optional style name
**Parameters**
### Returned value
- `geometry` — Geo data. [Geo](../../data-types/geo).
- `style` — Optional style name. [String](../../data-types/string).
**Returned value**
- The SVG representation of the geometry:
- SVG circle
- SVG polygon
- SVG path
Type: String
Type: [String](../../data-types/string)
## Examples
**Examples**
**Circle**
Query:
### Circle
```sql
SELECT SVG((0., 0.))
```
Result:
```response
<circle cx="0" cy="0" r="5" style=""/>
```
### Polygon
**Polygon**
Query:
```sql
SELECT SVG([(0., 0.), (10, 0), (10, 10), (0, 10)])
```
Result:
```response
<polygon points="0,0 0,10 10,10 10,0 0,0" style=""/>
```
### Path
**Path**
Query:
```sql
SELECT SVG([[(0., 0.), (10, 0), (10, 10), (0, 10)], [(4., 4.), (5, 4), (5, 5), (4, 5)]])
```
Result:
```response
<g fill-rule="evenodd"><path d="M 0,0 L 0,10 L 10,10 L 10,0 L 0,0M 4,4 L 5,4 L 5,5 L 4,5 L 4,4 z " style=""/></g>
```

34
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View File

@ -914,3 +914,37 @@ Result:
│ 11 │
└──────────────────────────────────┘
```
## sigmoid
Returns the [sigmoid function](https://en.wikipedia.org/wiki/Sigmoid_function).
**Syntax**
```sql
sigmoid(x)
```
**Parameters**
- `x` — input value. Values from the interval: `-∞ < x < +∞`. [(U)Int*](../../sql-reference/data-types/int-uint.md), [Float*](../../sql-reference/data-types/float.md) or [Decimal*](../../sql-reference/data-types/decimal.md).
**Returned value**
- Corresponding value along the sigmoid curve between 0 and 1. [Float64](../../sql-reference/data-types/float.md).
**Example**
Query:
``` sql
SELECT round(sigmoid(x), 5) FROM (SELECT arrayJoin([-1, 0, 1]) AS x);
```
Result:
```result
0.26894
0.5
0.73106
```

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@ -556,7 +556,7 @@ hasColumnInTable(\[‘hostname’\[, ‘username’\[, ‘password’\]\],\] ‘
**Parameters**
- `database` : name of the database. [String literal](../syntax#syntax-string-literal)
- `table` : name of the table. [String literal](../syntax#syntax-string-literal)
- `table` : name of the table. [String literal](../syntax#syntax-string-literal)
- `column` : name of the column. [String literal](../syntax#syntax-string-literal)
- `hostname` : remote server name to perform the check on. [String literal](../syntax#syntax-string-literal)
- `username` : username for remote server. [String literal](../syntax#syntax-string-literal)
@ -565,7 +565,7 @@ hasColumnInTable(\[‘hostname’\[, ‘username’\[, ‘password’\]\],\] ‘
**Returned value**
- `1` if the given column exists.
- `0`, otherwise.
- `0`, otherwise.
**Implementation details**
@ -1024,6 +1024,7 @@ The result of the function depends on the affected data blocks and the order of
:::note
Only returns neighbor inside the currently processed data block.
Because of this error-prone behavior the function is DEPRECATED, please use proper window functions instead.
:::
The order of rows during calculation of `neighbor()` can differ from the order of rows returned to the user.
@ -1134,6 +1135,7 @@ Returns 0 for the first row, and for subsequent rows the difference to the previ
:::note
Only returns differences inside the currently processed data block.
Because of this error-prone behavior the function is DEPRECATED, please use proper window functions instead.
:::
The result of the function depends on the affected data blocks and the order of data in the block.
@ -1207,6 +1209,10 @@ WHERE diff != 1
## runningDifferenceStartingWithFirstValue
:::note
This function is DEPRECATED (see the note for `runningDifference`).
:::
Same as [runningDifference](./other-functions.md#other_functions-runningdifference), but returns the value of the first row as the value on the first row.
## runningConcurrency
@ -1930,6 +1936,7 @@ Accumulates the states of an aggregate function for each row of a data block.
:::note
The state is reset for each new block of data.
Because of this error-prone behavior the function is DEPRECATED, please use proper window functions instead.
:::
**Syntax**
@ -2444,7 +2451,7 @@ Type: [Array](../../sql-reference/data-types/array.md)([String](../../sql-refere
## defaultRoles
Returns the roles which are enabled by default for the current user when he logs in. Initially these are all roles granted to the current user (see [GRANT](../../sql-reference/statements/grant.md#grant-select)), but that can be changed with the [SET DEFAULT ROLE](../../sql-reference/statements/set-role.md#set-default-role-statement) statement.
Returns the roles which are enabled by default for the current user when he logs in. Initially these are all roles granted to the current user (see [GRANT](../../sql-reference/statements/grant.md#select)), but that can be changed with the [SET DEFAULT ROLE](../../sql-reference/statements/set-role.md#set-default-role-statement) statement.
**Syntax**
@ -3213,6 +3220,74 @@ Result:
└───────────────────────────────────────┘
```
## connectionId
Retrieves the connection ID of the client that submitted the current query and returns it as a UInt64 integer.
**Syntax**
```sql
connectionId()
```
**Parameters**
None.
**Returned value**
Returns an integer of type UInt64.
**Implementation details**
This function is most useful in debugging scenarios or for internal purposes within the MySQL handler. It was created for compatibility with [MySQL's `CONNECTION_ID` function](https://dev.mysql.com/doc/refman/8.0/en/information-functions.html#function_connection-id) It is not typically used in production queries.
**Example**
Query:
```sql
SELECT connectionId();
```
```response
0
```
## connection_id
An alias of `connectionId`. Retrieves the connection ID of the client that submitted the current query and returns it as a UInt64 integer.
**Syntax**
```sql
connection_id()
```
**Parameters**
None.
**Returned value**
Returns an integer of type UInt64.
**Implementation details**
This function is most useful in debugging scenarios or for internal purposes within the MySQL handler. It was created for compatibility with [MySQL's `CONNECTION_ID` function](https://dev.mysql.com/doc/refman/8.0/en/information-functions.html#function_connection-id) It is not typically used in production queries.
**Example**
Query:
```sql
SELECT connection_id();
```
```response
0
```
## getClientHTTPHeader
Get the value of an HTTP header.

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@ -79,9 +79,9 @@ round(expression [, decimal_places])
The rounded number of the same type as the input number.
### Examples
**Examples**
**Example of use with Float**
Example of usage with Float:
``` sql
SELECT number / 2 AS x, round(x) FROM system.numbers LIMIT 3;
@ -95,7 +95,7 @@ SELECT number / 2 AS x, round(x) FROM system.numbers LIMIT 3;
└─────┴──────────────────────────┘
```
**Example of use with Decimal**
Example of usage with Decimal:
``` sql
SELECT cast(number / 2 AS Decimal(10,4)) AS x, round(x) FROM system.numbers LIMIT 3;
@ -124,9 +124,7 @@ SELECT cast(number / 2 AS Decimal(10,4)) AS x, round(x) FROM system.numbers LIM
└────────┴──────────────────────────────────────────────────┘
```
**Examples of rounding**
Rounding to the nearest number.
Examples of rounding to the nearest number:
``` text
round(3.2, 0) = 3
@ -183,9 +181,7 @@ roundBankers(expression [, decimal_places])
A value rounded by the banker’s rounding method.
### Examples
**Example of use**
**Examples**
Query:
@ -210,7 +206,7 @@ Result:
└─────┴───┘
```
**Examples of Banker’s rounding**
Examples of Banker’s rounding:
``` text
roundBankers(0.4) = 0
@ -226,25 +222,180 @@ roundBankers(10.755, 2) = 10.76
- [round](#rounding_functions-round)
## roundToExp2(num)
## roundToExp2
Accepts a number. If the number is less than one, it returns 0. Otherwise, it rounds the number down to the nearest (whole non-negative) degree of two.
Accepts a number. If the number is less than one, it returns `0`. Otherwise, it rounds the number down to the nearest (whole non-negative) degree of two.
## roundDuration(num)
**Syntax**
Accepts a number. If the number is less than one, it returns 0. Otherwise, it rounds the number down to numbers from the set: 1, 10, 30, 60, 120, 180, 240, 300, 600, 1200, 1800, 3600, 7200, 18000, 36000.
```sql
roundToExp2(num)
```
## roundAge(num)
**Parameters**
Accepts a number. If the number is
- smaller than 1, it returns 0,
- between 1 and 17, it returns 17,
- between 18 and 24, it returns 18,
- between 25 and 34, it returns 25,
- between 35 and 44, it returns 35,
- between 45 and 54, it returns 45,
- larger than 55, it returns 55.
- `num`: A number representing an age in years. [UInt](../data-types/int-uint.md)/[Float](../data-types/float.md).
## roundDown(num, arr)
**Returned value**
- `0`, for `num` $\lt 1$. [UInt8](../data-types/int-uint.md).
- `num` rounded down to the nearest (whole non-negative) degree of two. [UInt](../data-types/int-uint.md)/[Float](../data-types/float.md) equivalent to the input type.
**Example**
Query:
```sql
SELECT *, roundToExp2(*) FROM system.numbers WHERE number IN (0, 2, 5, 10, 19, 50)
```
Result:
```response
┌─number─┬─roundToExp2(number)─┐
│ 0 │ 0 │
│ 2 │ 2 │
│ 5 │ 4 │
│ 10 │ 8 │
│ 19 │ 16 │
│ 50 │ 32 │
└────────┴─────────────────────┘
```
## roundDuration
Accepts a number. If the number is less than one, it returns `0`. Otherwise, it rounds the number down to numbers from the set of commonly used durations: `1, 10, 30, 60, 120, 180, 240, 300, 600, 1200, 1800, 3600, 7200, 18000, 36000`.
**Syntax**
```sql
roundDuration(num)
```
**Parameters**
- `num`: A number to round to one of the numbers in the set of common durations. [UInt](../data-types/int-uint.md)/[Float](../data-types/float.md).
**Returned value**
- `0`, for `num` $\lt 1$.
- Otherwise, one of: `1, 10, 30, 60, 120, 180, 240, 300, 600, 1200, 1800, 3600, 7200, 18000, 36000`. [UInt16](../data-types/int-uint.md).
**Example**
Query:
```sql
SELECT *, roundDuration(*) FROM system.numbers WHERE number IN (0, 9, 19, 47, 101, 149, 205, 271, 421, 789, 1423, 2345, 4567, 9876, 24680, 42573)
```
Result:
```response
┌─number─┬─roundDuration(number)─┐
│ 0 │ 0 │
│ 9 │ 1 │
│ 19 │ 10 │
│ 47 │ 30 │
│ 101 │ 60 │
│ 149 │ 120 │
│ 205 │ 180 │
│ 271 │ 240 │
│ 421 │ 300 │
│ 789 │ 600 │
│ 1423 │ 1200 │
│ 2345 │ 1800 │
│ 4567 │ 3600 │
│ 9876 │ 7200 │
│ 24680 │ 18000 │
│ 42573 │ 36000 │
└────────┴───────────────────────┘
```
## roundAge
Accepts a number within various commonly used ranges of human age and returns either a maximum or a minimum within that range.
**Syntax**
```sql
roundAge(num)
```
**Parameters**
- `age`: A number representing an age in years. [UInt](../data-types/int-uint.md)/[Float](../data-types/float.md).
**Returned value**
- Returns `0`, for $age \lt 1$.
- Returns `17`, for $1 \leq age \leq 17$.
- Returns `18`, for $18 \leq age \leq 24$.
- Returns `25`, for $25 \leq age \leq 34$.
- Returns `35`, for $35 \leq age \leq 44$.
- Returns `45`, for $45 \leq age \leq 54$.
- Returns `55`, for $age \geq 55$.
Type: [UInt8](../data-types/int-uint.md).
**Example**
Query:
```sql
SELECT *, roundAge(*) FROM system.numbers WHERE number IN (0, 5, 20, 31, 37, 54, 72);
```
Result:
```response
┌─number─┬─roundAge(number)─┐
│ 0 │ 0 │
│ 5 │ 17 │
│ 20 │ 18 │
│ 31 │ 25 │
│ 37 │ 35 │
│ 54 │ 45 │
│ 72 │ 55 │
└────────┴──────────────────┘
```
## roundDown
Accepts a number and rounds it down to an element in the specified array. If the value is less than the lowest bound, the lowest bound is returned.
**Syntax**
```sql
roundDown(num, arr)
```
**Parameters**
- `num`: A number to round down. [Numeric](../data-types/int-uint.md).
- `arr`: Array of elements to round `age` down to. [Array](../data-types/array.md) of [UInt](../data-types/int-uint.md)/[Float](../data-types/float.md) type.
**Returned value**
- Number rounded down to an element in `arr`. If the value is less than the lowest bound, the lowest bound is returned. [UInt](../data-types/int-uint.md)/[Float](../data-types/float.md) type deduced from the type of `arr`.
**Example**
Query:
```sql
SELECT *, roundDown(*, [3, 4, 5]) FROM system.numbers WHERE number IN (0, 1, 2, 3, 4, 5)
```
Result:
```response
┌─number─┬─roundDown(number, [3, 4, 5])─┐
│ 0 │ 3 │
│ 1 │ 3 │
│ 2 │ 3 │
│ 3 │ 3 │
│ 4 │ 4 │
│ 5 │ 5 │
└────────┴──────────────────────────────┘
```

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@ -88,20 +88,93 @@ Result:
## length
Returns the length of a string in bytes (not: in characters or Unicode code points).
The function also works for arrays.
Returns the length of a string in bytes rather than in characters or Unicode code points. The function also works for arrays.
Alias: `OCTET_LENGTH`
**Syntax**
```sql
length(s)
```
**Parameters**
- `s`: An input string or array. [String](../data-types/string)/[Array](../data-types/array).
**Returned value**
- Length of the string or array `s` in bytes. [UInt64](../data-types/int-uint).
**Example**
Query:
```sql
SELECT length('Hello, world!');
```
Result:
```response
┌─length('Hello, world!')─┐
│ 13 │
└─────────────────────────┘
```
Query:
```sql
SELECT length([1, 2, 3, 4]);
```
Result:
```response
┌─length([1, 2, 3, 4])─┐
│ 4 │
└──────────────────────┘
```
## lengthUTF8
Returns the length of a string in Unicode code points (not: in bytes or characters). It assumes that the string contains valid UTF-8 encoded text. If this assumption is violated, no exception is thrown and the result is undefined.
Returns the length of a string in Unicode code points rather than in bytes or characters. It assumes that the string contains valid UTF-8 encoded text. If this assumption is violated, no exception is thrown and the result is undefined.
Alias:
Aliases:
- `CHAR_LENGTH`
- `CHARACTER_LENGTH`
**Syntax**
```sql
lengthUTF8(s)
```
**Parameters**
- `s`: String containing valid UTF-8 encoded text. [String](../data-types/string).
**Returned value**
- Length of the string `s` in Unicode code points. [UInt64](../data-types/int-uint.md).
**Example**
Query:
```sql
SELECT lengthUTF8('Здравствуй, мир!');
```
Result:
```response
┌─lengthUTF8('Здравствуй, мир!')─┐
│ 16 │
└────────────────────────────────┘
```
## left
Returns a substring of string `s` with a specified `offset` starting from the left.
@ -1055,6 +1128,34 @@ Result:
Like `base58Decode` but returns an empty string in case of error.
**Syntax**
```sql
tryBase58Decode(encoded)
```
**Parameters**
- `encoded`: [String](../../sql-reference/data-types/string.md) column or constant. If the string is not a valid Base58-encoded value, returns an empty string in case of error.
**Returned value**
- A string containing the decoded value of the argument.
**Examples**
Query:
```sql
SELECT tryBase58Decode('3dc8KtHrwM') as res, tryBase58Decode('invalid') as res_invalid;
```
```response
┌─res─────┬─res_invalid─┐
│ Encoded │ │
└─────────┴─────────────┘
```
## base64Encode
Encodes a String or FixedString as base64.
@ -1071,6 +1172,30 @@ Alias: `FROM_BASE64`.
Like `base64Decode` but returns an empty string in case of error.
**Syntax**
```sql
tryBase64Decode(encoded)
```
**Parameters**
- `encoded`: [String](../../sql-reference/data-types/string.md) column or constant. If the string is not a valid Base58-encoded value, returns an empty string in case of error.
**Examples**
Query:
```sql
SELECT tryBase64Decode('RW5jb2RlZA==') as res, tryBase64Decode('invalid') as res_invalid;
```
```response
┌─res─────┬─res_invalid─┐
│ Encoded │ │
└─────────┴─────────────┘
```
## endsWith {#endswith}
Returns whether string `str` ends with `suffix`.

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View File

@ -817,6 +817,42 @@ Result:
└─────────────────────────────────────┘
```
## flattenTuple
Returns a flattened `output` tuple from a nested named `input` tuple. Elements of the `output` tuple are the paths from the original `input` tuple. For instance: `Tuple(a Int, Tuple(b Int, c Int)) -> Tuple(a Int, b Int, c Int)`. `flattenTuple` can be used to select all paths from type `Object` as separate columns.
**Syntax**
```sql
flattenTuple(input)
```
**Parameters**
- `input`: Nested named tuple to flatten. [Tuple](../data-types/tuple).
**Returned value**
- `output` tuple whose elements are paths from the original `input`. [Tuple](../data-types/tuple).
**Example**
Query:
``` sql
CREATE TABLE t_flatten_tuple(t Tuple(t1 Nested(a UInt32, s String), b UInt32, t2 Tuple(k String, v UInt32))) ENGINE = Memory;
INSERT INTO t_flatten_tuple VALUES (([(1, 'a'), (2, 'b')], 3, ('c', 4)));
SELECT flattenTuple(t) FROM t_flatten_tuple;
```
Result:
``` text
┌─flattenTuple(t)───────────┐
│ ([1,2],['a','b'],3,'c',4) │
└───────────────────────────┘
```
## Distance functions
All supported functions are described in [distance functions documentation](../../sql-reference/functions/distance-functions.md).

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View File

@ -8,49 +8,267 @@ sidebar_label: UUIDs
## generateUUIDv4
Generates the [UUID](../data-types/uuid.md) of [version 4](https://tools.ietf.org/html/rfc4122#section-4.4).
Generates a [version 4](https://tools.ietf.org/html/rfc4122#section-4.4) [UUID](../data-types/uuid.md).
**Syntax**
``` sql
generateUUIDv4([x])
generateUUIDv4([expr])
```
**Arguments**
- `x` — [Expression](../../sql-reference/syntax.md#syntax-expressions) resulting in any of the [supported data types](../../sql-reference/data-types/index.md#data_types). The resulting value is discarded, but the expression itself if used for bypassing [common subexpression elimination](../../sql-reference/functions/index.md#common-subexpression-elimination) if the function is called multiple times in one query. Optional parameter.
- `expr` — An arbitrary [expression](../../sql-reference/syntax.md#syntax-expressions) used to bypass [common subexpression elimination](../../sql-reference/functions/index.md#common-subexpression-elimination) if the function is called multiple times in a query. The value of the expression has no effect on the returned UUID. Optional.
**Returned value**
The UUID type value.
A value of type UUIDv4.
**Usage example**
**Example**
This example demonstrates creating a table with the UUID type column and inserting a value into the table.
First, create a table with a column of type UUID, then insert a generated UUIDv4 into the table.
``` sql
CREATE TABLE t_uuid (x UUID) ENGINE=TinyLog
CREATE TABLE tab (uuid UUID) ENGINE = Memory;
INSERT INTO t_uuid SELECT generateUUIDv4()
INSERT INTO tab SELECT generateUUIDv4();
SELECT * FROM t_uuid
SELECT * FROM tab;
```
Result:
```response
┌────────────────────────────────────x─┐
┌─────────────────────────────────uuid─┐
│ f4bf890f-f9dc-4332-ad5c-0c18e73f28e9 │
└──────────────────────────────────────┘
```
**Usage example if it is needed to generate multiple values in one row**
**Example with multiple UUIDs generated per row**
```sql
SELECT generateUUIDv4(1), generateUUIDv4(2)
SELECT generateUUIDv4(1), generateUUIDv4(2);
┌─generateUUIDv4(1)────────────────────┬─generateUUIDv4(2)────────────────────┐
│ 2d49dc6e-ddce-4cd0-afb8-790956df54c1 │ 8abf8c13-7dea-4fdf-af3e-0e18767770e6 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## generateUUIDv7 {#generateUUIDv7}
Generates a [version 7](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04) [UUID](../data-types/uuid.md).
The generated UUID contains the current Unix timestamp in milliseconds (48 bits), followed by version "7" (4 bits), a counter (42 bit) to distinguish UUIDs within a millisecond (including a variant field "2", 2 bit), and a random field (32 bits).
For any given timestamp (unix_ts_ms), the counter starts at a random value and is incremented by 1 for each new UUID until the timestamp changes.
In case the counter overflows, the timestamp field is incremented by 1 and the counter is reset to a random new start value.
Function `generateUUIDv7` guarantees that the counter field within a timestamp increments monotonically across all function invocations in concurrently running threads and queries.
```
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms | ver | counter_high_bits |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
|var| counter_low_bits |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| rand_b |
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
```
:::note
As of April 2024, version 7 UUIDs are in draft status and their layout may change in future.
:::
**Syntax**
``` sql
generateUUIDv7([expr])
```
**Arguments**
- `expr` — An arbitrary [expression](../../sql-reference/syntax.md#syntax-expressions) used to bypass [common subexpression elimination](../../sql-reference/functions/index.md#common-subexpression-elimination) if the function is called multiple times in a query. The value of the expression has no effect on the returned UUID. Optional.
**Returned value**
A value of type UUIDv7.
**Example**
First, create a table with a column of type UUID, then insert a generated UUIDv7 into the table.
``` sql
CREATE TABLE tab (uuid UUID) ENGINE = Memory;
INSERT INTO tab SELECT generateUUIDv7();
SELECT * FROM tab;
```
Result:
```response
┌─────────────────────────────────uuid─┐
│ 018f05af-f4a8-778f-beee-1bedbc95c93b │
└──────────────────────────────────────┘
```
**Example with multiple UUIDs generated per row**
```sql
SELECT generateUUIDv7(1), generateUUIDv7(2);
┌─generateUUIDv7(1)────────────────────┬─generateUUIDv7(2)────────────────────┐
│ 018f05c9-4ab8-7b86-b64e-c9f03fbd45d1 │ 018f05c9-4ab8-7b86-b64e-c9f12efb7e16 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## generateUUIDv7ThreadMonotonic
Generates a [UUID](../data-types/uuid.md) of [version 7](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04).
The generated UUID contains the current Unix timestamp in milliseconds (48 bits), followed by version "7" (4 bits), a counter (42 bit) to distinguish UUIDs within a millisecond (including a variant field "2", 2 bit), and a random field (32 bits).
For any given timestamp (unix_ts_ms), the counter starts at a random value and is incremented by 1 for each new UUID until the timestamp changes.
In case the counter overflows, the timestamp field is incremented by 1 and the counter is reset to a random new start value.
This function behaves like [generateUUIDv7](#generateUUIDv7) but gives no guarantee on counter monotony across different simultaneous requests.
Monotonicity within one timestamp is guaranteed only within the same thread calling this function to generate UUIDs.
```
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms | ver | counter_high_bits |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
|var| counter_low_bits |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| rand_b |
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
```
:::note
As of April 2024, version 7 UUIDs are in draft status and their layout may change in future.
:::
**Syntax**
``` sql
generateUUIDv7ThreadMonotonic([expr])
```
**Arguments**
- `expr` — An arbitrary [expression](../../sql-reference/syntax.md#syntax-expressions) used to bypass [common subexpression elimination](../../sql-reference/functions/index.md#common-subexpression-elimination) if the function is called multiple times in a query. The value of the expression has no effect on the returned UUID. Optional.
**Returned value**
A value of type UUIDv7.
**Usage example**
First, create a table with a column of type UUID, then insert a generated UUIDv7 into the table.
``` sql
CREATE TABLE tab (uuid UUID) ENGINE = Memory;
INSERT INTO tab SELECT generateUUIDv7ThreadMonotonic();
SELECT * FROM tab;
```
Result:
```response
┌─────────────────────────────────uuid─┐
│ 018f05e2-e3b2-70cb-b8be-64b09b626d32 │
└──────────────────────────────────────┘
```
**Example with multiple UUIDs generated per row**
```sql
SELECT generateUUIDv7ThreadMonotonic(1), generateUUIDv7ThreadMonotonic(2);
┌─generateUUIDv7ThreadMonotonic(1)─────┬─generateUUIDv7ThreadMonotonic(2)─────┐
│ 018f05e1-14ee-7bc5-9906-207153b400b1 │ 018f05e1-14ee-7bc5-9906-2072b8e96758 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## generateUUIDv7NonMonotonic
Generates a [UUID](../data-types/uuid.md) of [version 7](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04).
The generated UUID contains the current Unix timestamp in milliseconds (48 bits), followed by version "7" (4 bits) and a random field (76 bits, including a 2-bit variant field "2").
This function is the fastest `generateUUIDv7*` function but it gives no monotonicity guarantees within a timestamp.
```
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms | ver | rand_a |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
|var| rand_b |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| rand_b |
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
```
:::note
As of April 2024, version 7 UUIDs are in draft status and their layout may change in future.
:::
**Syntax**
``` sql
generateUUIDv7NonMonotonic([expr])
```
**Arguments**
- `expr` — An arbitrary [expression](../../sql-reference/syntax.md#syntax-expressions) used to bypass [common subexpression elimination](../../sql-reference/functions/index.md#common-subexpression-elimination) if the function is called multiple times in a query. The value of the expression has no effect on the returned UUID. Optional.
**Returned value**
A value of type UUIDv7.
**Example**
First, create a table with a column of type UUID, then insert a generated UUIDv7 into the table.
``` sql
CREATE TABLE tab (uuid UUID) ENGINE = Memory;
INSERT INTO tab SELECT generateUUIDv7NonMonotonic();
SELECT * FROM tab;
```
Result:
```response
┌─────────────────────────────────uuid─┐
│ 018f05af-f4a8-778f-beee-1bedbc95c93b │
└──────────────────────────────────────┘
```
**Example with multiple UUIDs generated per row**
```sql
SELECT generateUUIDv7NonMonotonic(1), generateUUIDv7NonMonotonic(2);
┌─generateUUIDv7NonMonotonic(1) ───────┬─generateUUIDv7(2)NonMonotonic────────┐
│ 018f05b1-8c2e-7567-a988-48d09606ae8c │ 018f05b1-8c2e-7946-895b-fcd7635da9a0 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## empty
Checks whether the input UUID is empty.
@ -63,15 +281,15 @@ empty(UUID)
The UUID is considered empty if it contains all zeros (zero UUID).
The function also works for [arrays](array-functions.md#function-empty) or [strings](string-functions.md#empty).
The function also works for [Arrays](array-functions.md#function-empty) and [Strings](string-functions.md#empty).
**Arguments**
- `x` — Input UUID. [UUID](../data-types/uuid.md).
- `x` — A UUID. [UUID](../data-types/uuid.md).
**Returned value**
- Returns `1` for an empty UUID or `0` for a non-empty UUID.
- Returns `1` for an empty UUID or `0` for a non-empty UUID.
Type: [UInt8](../data-types/int-uint.md).
@ -105,15 +323,15 @@ notEmpty(UUID)
The UUID is considered empty if it contains all zeros (zero UUID).
The function also works for [arrays](array-functions.md#function-notempty) or [strings](string-functions.md#notempty).
The function also works for [Arrays](array-functions.md#function-notempty) or [Strings](string-functions.md#notempty).
**Arguments**
- `x` — Input UUID. [UUID](../data-types/uuid.md).
- `x` — A UUID. [UUID](../data-types/uuid.md).
**Returned value**
- Returns `1` for a non-empty UUID or `0` for an empty UUID.
- Returns `1` for a non-empty UUID or `0` for an empty UUID.
Type: [UInt8](../data-types/int-uint.md).
@ -135,12 +353,12 @@ Result:
└────────────────────────────┘
```
## toUUID (x)
## toUUID
Converts String type value to UUID type.
Converts a value of type String to a UUID.
``` sql
toUUID(String)
toUUID(string)
```
**Returned value**
@ -153,13 +371,15 @@ The UUID type value.
SELECT toUUID('61f0c404-5cb3-11e7-907b-a6006ad3dba0') AS uuid
```
Result:
```response
┌─────────────────────────────────uuid─┐
│ 61f0c404-5cb3-11e7-907b-a6006ad3dba0 │
└──────────────────────────────────────┘
```
## toUUIDOrDefault (x,y)
## toUUIDOrDefault
**Arguments**
@ -171,7 +391,7 @@ SELECT toUUID('61f0c404-5cb3-11e7-907b-a6006ad3dba0') AS uuid
UUID
``` sql
toUUIDOrDefault(String, UUID)
toUUIDOrDefault(string, default)
```
**Returned value**
@ -185,6 +405,9 @@ This first example returns the first argument converted to a UUID type as it can
``` sql
SELECT toUUIDOrDefault('61f0c404-5cb3-11e7-907b-a6006ad3dba0', cast('59f0c404-5cb3-11e7-907b-a6006ad3dba0' as UUID));
```
Result:
```response
┌─toUUIDOrDefault('61f0c404-5cb3-11e7-907b-a6006ad3dba0', CAST('59f0c404-5cb3-11e7-907b-a6006ad3dba0', 'UUID'))─┐
│ 61f0c404-5cb3-11e7-907b-a6006ad3dba0 │
@ -197,18 +420,20 @@ This second example returns the second argument (the provided default UUID) as t
SELECT toUUIDOrDefault('-----61f0c404-5cb3-11e7-907b-a6006ad3dba0', cast('59f0c404-5cb3-11e7-907b-a6006ad3dba0' as UUID));
```
Result:
```response
┌─toUUIDOrDefault('-----61f0c404-5cb3-11e7-907b-a6006ad3dba0', CAST('59f0c404-5cb3-11e7-907b-a6006ad3dba0', 'UUID'))─┐
│ 59f0c404-5cb3-11e7-907b-a6006ad3dba0 │
└────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
```
## toUUIDOrNull (x)
## toUUIDOrNull
It takes an argument of type String and tries to parse it into UUID. If failed, returns NULL.
Takes an argument of type String and tries to parse it into UUID. If failed, returns NULL.
``` sql
toUUIDOrNull(String)
toUUIDOrNull(string)
```
**Returned value**
@ -221,18 +446,20 @@ The Nullable(UUID) type value.
SELECT toUUIDOrNull('61f0c404-5cb3-11e7-907b-a6006ad3dba0T') AS uuid
```
Result:
```response
┌─uuid─┐
│ ᴺᵁᴸᴸ │
└──────┘
```
## toUUIDOrZero (x)
## toUUIDOrZero
It takes an argument of type String and tries to parse it into UUID. If failed, returns zero UUID.
``` sql
toUUIDOrZero(String)
toUUIDOrZero(string)
```
**Returned value**
@ -245,6 +472,8 @@ The UUID type value.
SELECT toUUIDOrZero('61f0c404-5cb3-11e7-907b-a6006ad3dba0T') AS uuid
```
Result:
```response
┌─────────────────────────────────uuid─┐
│ 00000000-0000-0000-0000-000000000000 │
@ -263,7 +492,7 @@ UUIDStringToNum(string[, variant = 1])
**Arguments**
- `string` — String of 36 characters or FixedString(36). [String](../../sql-reference/syntax.md#syntax-string-literal).
- `string` — A [String](../../sql-reference/syntax.md#syntax-string-literal) of 36 characters or [FixedString](../../sql-reference/syntax.md#syntax-string-literal)
- `variant` — Integer, representing a variant as specified by [RFC4122](https://datatracker.ietf.org/doc/html/rfc4122#section-4.1.1). 1 = `Big-endian` (default), 2 = `Microsoft`.
**Returned value**
@ -278,6 +507,8 @@ SELECT
UUIDStringToNum(uuid) AS bytes
```
Result:
```response
┌─uuid─────────────────────────────────┬─bytes────────────┐
│ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │ a/<@];!~p{jTj={) │
@ -290,6 +521,8 @@ SELECT
UUIDStringToNum(uuid, 2) AS bytes
```
Result:
```response
┌─uuid─────────────────────────────────┬─bytes────────────┐
│ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │ @</a;]~!p{jTj={) │
@ -323,6 +556,8 @@ SELECT
UUIDNumToString(toFixedString(bytes, 16)) AS uuid
```
Result:
```response
┌─bytes────────────┬─uuid─────────────────────────────────┐
│ a/<@];!~p{jTj={) │ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │
@ -335,15 +570,113 @@ SELECT
UUIDNumToString(toFixedString(bytes, 16), 2) AS uuid
```
Result:
```response
┌─bytes────────────┬─uuid─────────────────────────────────┐
│ @</a;]~!p{jTj={) │ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │
└──────────────────┴──────────────────────────────────────┘
```
## UUIDToNum
Accepts a [UUID](../../sql-reference/data-types/uuid.md) and returns its binary representation as a [FixedString(16)](../../sql-reference/data-types/fixedstring.md), with its format optionally specified by `variant` (`Big-endian` by default). This function replaces calls to two separate functions `UUIDStringToNum(toString(uuid))` so no intermediate conversion from UUID to string is required to extract bytes from a UUID.
**Syntax**
``` sql
UUIDToNum(uuid[, variant = 1])
```
**Arguments**
- `uuid` — [UUID](../data-types/uuid.md).
- `variant` — Integer, representing a variant as specified by [RFC4122](https://datatracker.ietf.org/doc/html/rfc4122#section-4.1.1). 1 = `Big-endian` (default), 2 = `Microsoft`.
**Returned value**
The binary representation of the UUID.
**Usage examples**
``` sql
SELECT
toUUID('612f3c40-5d3b-217e-707b-6a546a3d7b29') AS uuid,
UUIDToNum(uuid) AS bytes
```
Result:
```response
┌─uuid─────────────────────────────────┬─bytes────────────┐
│ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │ a/<@];!~p{jTj={) │
└──────────────────────────────────────┴──────────────────┘
```
``` sql
SELECT
toUUID('612f3c40-5d3b-217e-707b-6a546a3d7b29') AS uuid,
UUIDToNum(uuid, 2) AS bytes
```
Result:
```response
┌─uuid─────────────────────────────────┬─bytes────────────┐
│ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │ @</a;]~!p{jTj={) │
└──────────────────────────────────────┴──────────────────┘
```
## UUIDv7ToDateTime
Returns the timestamp component of a UUID version 7.
**Syntax**
``` sql
UUIDv7ToDateTime(uuid[, timezone])
```
**Arguments**
- `uuid` — [UUID](../data-types/uuid.md) of version 7.
- `timezone` — [Timezone name](../../operations/server-configuration-parameters/settings.md#server_configuration_parameters-timezone) for the returned value (optional). [String](../../sql-reference/data-types/string.md).
**Returned value**
- Timestamp with milliseconds precision. If the UUID is not a valid version 7 UUID, it returns 1970-01-01 00:00:00.000.
Type: [DateTime64(3)](/docs/en/sql-reference/data-types/datetime64.md).
**Usage examples**
``` sql
SELECT UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'))
```
Result:
```response
┌─UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'))─┐
│ 2024-04-22 15:30:29.048 │
└──────────────────────────────────────────────────────────────────┘
```
``` sql
SELECT UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'), 'America/New_York')
```
Result:
```response
┌─UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'), 'America/New_York')─┐
│ 2024-04-22 08:30:29.048 │
└──────────────────────────────────────────────────────────────────────────────────────┘
```
## serverUUID()
Returns the random and unique UUID, which is generated when the server is first started and stored forever. The result writes to the file `uuid` created in the ClickHouse server directory `/var/lib/clickhouse/`.
Returns the random UUID generated during the first start of the ClickHouse server. The UUID is stored in file `uuid` in the ClickHouse server directory (e.g. `/var/lib/clickhouse/`) and retained between server restarts.
**Syntax**
@ -353,10 +686,10 @@ serverUUID()
**Returned value**
- The UUID of the server.
- The UUID of the server.
Type: [UUID](../data-types/uuid.md).
## See Also
## See also
- [dictGetUUID](../../sql-reference/functions/ext-dict-functions.md#ext_dict_functions-other)

426
docs/en/sql-reference/functions/ym-dict-functions.md
View File

@ -6,24 +6,29 @@ sidebar_label: Embedded Dictionaries
# Functions for Working with Embedded Dictionaries
:::note
In order for the functions below to work, the server config must specify the paths and addresses for getting all the embedded dictionaries. The dictionaries are loaded at the first call of any of these functions. If the reference lists can’t be loaded, an exception is thrown.
For information about creating reference lists, see the section “Dictionaries”.
As such, the examples shown in this section will throw an exception in [ClickHouse Fiddle](https://fiddle.clickhouse.com/) and in quick release and production deployments by default, unless first configured.
:::
For information about creating reference lists, see the section [“Dictionaries”](../dictionaries#embedded-dictionaries).
## Multiple Geobases
ClickHouse supports working with multiple alternative geobases (regional hierarchies) simultaneously, in order to support various perspectives on which countries certain regions belong to.
The ‘clickhouse-server’ config specifies the file with the regional hierarchy::`<path_to_regions_hierarchy_file>/opt/geo/regions_hierarchy.txt</path_to_regions_hierarchy_file>`
The ‘clickhouse-server’ config specifies the file with the regional hierarchy:
Besides this file, it also searches for files nearby that have the _ symbol and any suffix appended to the name (before the file extension).
For example, it will also find the file `/opt/geo/regions_hierarchy_ua.txt`, if present.
```<path_to_regions_hierarchy_file>/opt/geo/regions_hierarchy.txt</path_to_regions_hierarchy_file>```
`ua` is called the dictionary key. For a dictionary without a suffix, the key is an empty string.
Besides this file, it also searches for files nearby that have the `_` symbol and any suffix appended to the name (before the file extension).
For example, it will also find the file `/opt/geo/regions_hierarchy_ua.txt`, if present. Here `ua` is called the dictionary key. For a dictionary without a suffix, the key is an empty string.
All the dictionaries are re-loaded in runtime (once every certain number of seconds, as defined in the builtin_dictionaries_reload_interval config parameter, or once an hour by default). However, the list of available dictionaries is defined one time, when the server starts.
All the dictionaries are re-loaded during runtime (once every certain number of seconds, as defined in the [`builtin_dictionaries_reload_interval`](../../operations/server-configuration-parameters/settings#builtin-dictionaries-reload-interval) config parameter, or once an hour by default). However, the list of available dictionaries is defined once, when the server starts.
All functions for working with regions have an optional argument at the end – the dictionary key. It is referred to as the geobase.
Example:
``` sql
@ -32,13 +37,116 @@ regionToCountry(RegionID, '') – Uses the default dictionary: /opt/geo/regions_
regionToCountry(RegionID, 'ua') – Uses the dictionary for the 'ua' key: /opt/geo/regions_hierarchy_ua.txt
```
### regionToCity(id\[, geobase\])
### regionToName
Accepts a UInt32 number – the region ID from the geobase. If this region is a city or part of a city, it returns the region ID for the appropriate city. Otherwise, returns 0.
Accepts a region ID and geobase and returns a string of the name of the region in the corresponding language. If the region with the specified ID does not exist, an empty string is returned.
### regionToArea(id\[, geobase\])
**Syntax**
Converts a region to an area (type 5 in the geobase). In every other way, this function is the same as ‘regionToCity’.
``` sql
regionToName(id\[, lang\])
```
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Name of the region in the corresponding language specified by `geobase`. [String](../data-types/string).
- Otherwise, an empty string.
**Example**
Query:
``` sql
SELECT regionToName(number::UInt32,'en') FROM numbers(0,5);
```
Result:
``` text
┌─regionToName(CAST(number, 'UInt32'), 'en')─┐
│ │
│ World │
│ USA │
│ Colorado │
│ Boulder County │
└────────────────────────────────────────────┘
```
### regionToCity
Accepts a region ID from the geobase. If this region is a city or part of a city, it returns the region ID for the appropriate city. Otherwise, returns 0.
**Syntax**
```sql
regionToCity(id [, geobase])
```
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Region ID for the appropriate city, if it exists. [UInt32](../data-types/int-uint).
- 0, if there is none.
**Example**
Query:
```sql
SELECT regionToName(number::UInt32, 'en'), regionToCity(number::UInt32) AS id, regionToName(id, 'en') FROM numbers(13);
```
Result:
```response
┌─regionToName(CAST(number, 'UInt32'), 'en')─┬─id─┬─regionToName(regionToCity(CAST(number, 'UInt32')), 'en')─┐
│ │ 0 │ │
│ World │ 0 │ │
│ USA │ 0 │ │
│ Colorado │ 0 │ │
│ Boulder County │ 0 │ │
│ Boulder │ 5 │ Boulder │
│ China │ 0 │ │
│ Sichuan │ 0 │ │
│ Chengdu │ 8 │ Chengdu │
│ America │ 0 │ │
│ North America │ 0 │ │
│ Eurasia │ 0 │ │
│ Asia │ 0 │ │
└────────────────────────────────────────────┴────┴──────────────────────────────────────────────────────────┘
```
### regionToArea
Converts a region to an area (type 5 in the geobase). In every other way, this function is the same as [‘regionToCity’](#regiontocity).
**Syntax**
```sql
regionToArea(id [, geobase])
```
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Region ID for the appropriate area, if it exists. [UInt32](../data-types/int-uint).
- 0, if there is none.
**Example**
Query:
``` sql
SELECT DISTINCT regionToName(regionToArea(toUInt32(number), 'ua'))
@ -46,6 +154,8 @@ FROM system.numbers
LIMIT 15
```
Result:
``` text
┌─regionToName(regionToArea(toUInt32(number), \'ua\'))─┐
│ │
@ -66,16 +176,38 @@ LIMIT 15
└──────────────────────────────────────────────────────┘
```
### regionToDistrict(id\[, geobase\])
### regionToDistrict
Converts a region to a federal district (type 4 in the geobase). In every other way, this function is the same as ‘regionToCity’.
**Syntax**
```sql
regionToDistrict(id [, geobase])
```
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Region ID for the appropriate city, if it exists. [UInt32](../data-types/int-uint).
- 0, if there is none.
**Example**
Query:
``` sql
SELECT DISTINCT regionToName(regionToDistrict(toUInt32(number), 'ua'))
FROM system.numbers
LIMIT 15
```
Result:
``` text
┌─regionToName(regionToDistrict(toUInt32(number), \'ua\'))─┐
│ │
@ -96,17 +228,103 @@ LIMIT 15
└──────────────────────────────────────────────────────────┘
```
### regionToCountry(id\[, geobase\])
### regionToCountry
Converts a region to a country. In every other way, this function is the same as ‘regionToCity’.
Example: `regionToCountry(toUInt32(213)) = 225` converts Moscow (213) to Russia (225).
Converts a region to a country (type 3 in the geobase). In every other way, this function is the same as ‘regionToCity’.
### regionToContinent(id\[, geobase\])
**Syntax**
Converts a region to a continent. In every other way, this function is the same as ‘regionToCity’.
Example: `regionToContinent(toUInt32(213)) = 10001` converts Moscow (213) to Eurasia (10001).
```sql
regionToCountry(id [, geobase])
```
### regionToTopContinent(id\[, geobase\])
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Region ID for the appropriate country, if it exists. [UInt32](../data-types/int-uint).
- 0, if there is none.
**Example**
Query:
``` sql
SELECT regionToName(number::UInt32, 'en'), regionToCountry(number::UInt32) AS id, regionToName(id, 'en') FROM numbers(13);
```
Result:
``` text
┌─regionToName(CAST(number, 'UInt32'), 'en')─┬─id─┬─regionToName(regionToCountry(CAST(number, 'UInt32')), 'en')─┐
│ │ 0 │ │
│ World │ 0 │ │
│ USA │ 2 │ USA │
│ Colorado │ 2 │ USA │
│ Boulder County │ 2 │ USA │
│ Boulder │ 2 │ USA │
│ China │ 6 │ China │
│ Sichuan │ 6 │ China │
│ Chengdu │ 6 │ China │
│ America │ 0 │ │
│ North America │ 0 │ │
│ Eurasia │ 0 │ │
│ Asia │ 0 │ │
└────────────────────────────────────────────┴────┴─────────────────────────────────────────────────────────────┘
```
### regionToContinent
Converts a region to a continent (type 1 in the geobase). In every other way, this function is the same as ‘regionToCity’.
**Syntax**
```sql
regionToContinent(id [, geobase])
```
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Region ID for the appropriate continent, if it exists. [UInt32](../data-types/int-uint).
- 0, if there is none.
**Example**
Query:
``` sql
SELECT regionToName(number::UInt32, 'en'), regionToContinent(number::UInt32) AS id, regionToName(id, 'en') FROM numbers(13);
```
Result:
``` text
┌─regionToName(CAST(number, 'UInt32'), 'en')─┬─id─┬─regionToName(regionToContinent(CAST(number, 'UInt32')), 'en')─┐
│ │ 0 │ │
│ World │ 0 │ │
│ USA │ 10 │ North America │
│ Colorado │ 10 │ North America │
│ Boulder County │ 10 │ North America │
│ Boulder │ 10 │ North America │
│ China │ 12 │ Asia │
│ Sichuan │ 12 │ Asia │
│ Chengdu │ 12 │ Asia │
│ America │ 9 │ America │
│ North America │ 10 │ North America │
│ Eurasia │ 11 │ Eurasia │
│ Asia │ 12 │ Asia │
└────────────────────────────────────────────┴────┴───────────────────────────────────────────────────────────────┘
```
### regionToTopContinent
Finds the highest continent in the hierarchy for the region.
@ -116,37 +334,175 @@ Finds the highest continent in the hierarchy for the region.
regionToTopContinent(id[, geobase])
```
**Arguments**
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../../sql-reference/data-types/int-uint.md).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../../sql-reference/data-types/string.md). Optional.
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Identifier of the top level continent (the latter when you climb the hierarchy of regions).
- Identifier of the top level continent (the latter when you climb the hierarchy of regions).[UInt32](../data-types/int-uint).
- 0, if there is none.
Type: `UInt32`.
**Example**
### regionToPopulation(id\[, geobase\])
Query:
Gets the population for a region.
The population can be recorded in files with the geobase. See the section “Dictionaries”.
If the population is not recorded for the region, it returns 0.
In the geobase, the population might be recorded for child regions, but not for parent regions.
``` sql
SELECT regionToName(number::UInt32, 'en'), regionToTopContinent(number::UInt32) AS id, regionToName(id, 'en') FROM numbers(13);
```
### regionIn(lhs, rhs\[, geobase\])
Result:
``` text
┌─regionToName(CAST(number, 'UInt32'), 'en')─┬─id─┬─regionToName(regionToTopContinent(CAST(number, 'UInt32')), 'en')─┐
│ │ 0 │ │
│ World │ 0 │ │
│ USA │ 9 │ America │
│ Colorado │ 9 │ America │
│ Boulder County │ 9 │ America │
│ Boulder │ 9 │ America │
│ China │ 11 │ Eurasia │
│ Sichuan │ 11 │ Eurasia │
│ Chengdu │ 11 │ Eurasia │
│ America │ 9 │ America │
│ North America │ 9 │ America │
│ Eurasia │ 11 │ Eurasia │
│ Asia │ 11 │ Eurasia │
└────────────────────────────────────────────┴────┴──────────────────────────────────────────────────────────────────┘
```
### regionToPopulation
Gets the population for a region. The population can be recorded in files with the geobase. See the section [“Dictionaries”](../dictionaries#embedded-dictionaries). If the population is not recorded for the region, it returns 0. In the geobase, the population might be recorded for child regions, but not for parent regions.
**Syntax**
``` sql
regionToPopulation(id[, geobase])
```
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Population for the region. [UInt32](../data-types/int-uint).
- 0, if there is none.
**Example**
Query:
``` sql
SELECT regionToName(number::UInt32, 'en'), regionToPopulation(number::UInt32) AS id, regionToName(id, 'en') FROM numbers(13);
```
Result:
``` text
┌─regionToName(CAST(number, 'UInt32'), 'en')─┬─population─┐
│ │ 0 │
│ World │ 4294967295 │
│ USA │ 330000000 │
│ Colorado │ 5700000 │
│ Boulder County │ 330000 │
│ Boulder │ 100000 │
│ China │ 1500000000 │
│ Sichuan │ 83000000 │
│ Chengdu │ 20000000 │
│ America │ 1000000000 │
│ North America │ 600000000 │
│ Eurasia │ 4294967295 │
│ Asia │ 4294967295 │
└────────────────────────────────────────────┴────────────┘
```
### regionIn
Checks whether a `lhs` region belongs to a `rhs` region. Returns a UInt8 number equal to 1 if it belongs, or 0 if it does not belong.
**Syntax**
``` sql
regionIn(lhs, rhs\[, geobase\])
```
**Parameters**
- `lhs` — Lhs region ID from the geobase. [UInt32](../../sql-reference/data-types/int-uint).
- `rhs` — Rhs region ID from the geobase. [UInt32](../../sql-reference/data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- 1, if it belongs. [UInt8](../../sql-reference/data-types/int-uint).
- 0, if it doesn't belong.
**Implementation details**
Checks whether a ‘lhs’ region belongs to a ‘rhs’ region. Returns a UInt8 number equal to 1 if it belongs, or 0 if it does not belong.
The relationship is reflexive – any region also belongs to itself.
### regionHierarchy(id\[, geobase\])
**Example**
Query:
``` sql
SELECT regionToName(n1.number::UInt32, 'en') || (regionIn(n1.number::UInt32, n2.number::UInt32) ? ' is in ' : ' is not in ') || regionToName(n2.number::UInt32, 'en') FROM numbers(1,2) AS n1 CROSS JOIN numbers(1,5) AS n2;
```
Result:
``` text
World is in World
World is not in USA
World is not in Colorado
World is not in Boulder County
World is not in Boulder
USA is in World
USA is in USA
USA is not in Colorado
USA is not in Boulder County
USA is not in Boulder
```
### regionHierarchy
Accepts a UInt32 number – the region ID from the geobase. Returns an array of region IDs consisting of the passed region and all parents along the chain.
Example: `regionHierarchy(toUInt32(213)) = [213,1,3,225,10001,10000]`.
### regionToName(id\[, lang\])
**Syntax**
Accepts a UInt32 number – the region ID from the geobase. A string with the name of the language can be passed as a second argument. Supported languages are: ru, en, ua, uk, by, kz, tr. If the second argument is omitted, the language ‘ru’ is used. If the language is not supported, an exception is thrown. Returns a string – the name of the region in the corresponding language. If the region with the specified ID does not exist, an empty string is returned.
``` sql
regionHierarchy(id\[, geobase\])
```
`ua` and `uk` both mean Ukrainian.
**Parameters**
- `id` — Region ID from the geobase. [UInt32](../data-types/int-uint).
- `geobase` — Dictionary key. See [Multiple Geobases](#multiple-geobases). [String](../data-types/string). Optional.
**Returned value**
- Array of region IDs consisting of the passed region and all parents along the chain. [Array](../data-types/array)([UInt32](../data-types/int-uint)).
**Example**
Query:
``` sql
SELECT regionHierarchy(number::UInt32) AS arr, arrayMap(id -> regionToName(id, 'en'), arr) FROM numbers(5);
```
Result:
``` text
┌─arr────────────┬─arrayMap(lambda(tuple(id), regionToName(id, 'en')), regionHierarchy(CAST(number, 'UInt32')))─┐
│ [] │ [] │
│ [1] │ ['World'] │
│ [2,10,9,1] │ ['USA','North America','America','World'] │
│ [3,2,10,9,1] │ ['Colorado','USA','North America','America','World'] │
│ [4,3,2,10,9,1] │ ['Boulder County','Colorado','USA','North America','America','World'] │
└────────────────┴──────────────────────────────────────────────────────────────────────────────────────────────┘
```

4
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@ -20,11 +20,11 @@ ALTER USER [IF EXISTS] name1 [ON CLUSTER cluster_name1] [RENAME TO new_name1]
[SETTINGS variable [= value] [MIN [=] min_value] [MAX [=] max_value] [READONLY | WRITABLE] | PROFILE 'profile_name'] [,...]
```
To use `ALTER USER` you must have the [ALTER USER](../../../sql-reference/statements/grant.md#grant-access-management) privilege.
To use `ALTER USER` you must have the [ALTER USER](../../../sql-reference/statements/grant.md#access-management) privilege.
## GRANTEES Clause
Specifies users or roles which are allowed to receive [privileges](../../../sql-reference/statements/grant.md#grant-privileges) from this user on the condition this user has also all required access granted with [GRANT OPTION](../../../sql-reference/statements/grant.md#grant-privigele-syntax). Options of the `GRANTEES` clause:
Specifies users or roles which are allowed to receive [privileges](../../../sql-reference/statements/grant.md#privileges) from this user on the condition this user has also all required access granted with [GRANT OPTION](../../../sql-reference/statements/grant.md#granting-privilege-syntax). Options of the `GRANTEES` clause:
- `user` — Specifies a user this user can grant privileges to.
- `role` — Specifies a role this user can grant privileges to.

2
docs/en/sql-reference/statements/create/user.md
View File

@ -177,7 +177,7 @@ Examples:
## GRANTEES Clause
Specifies users or roles which are allowed to receive [privileges](../../../sql-reference/statements/grant.md#grant-privileges) from this user on the condition this user has also all required access granted with [GRANT OPTION](../../../sql-reference/statements/grant.md#grant-privigele-syntax). Options of the `GRANTEES` clause:
Specifies users or roles which are allowed to receive [privileges](../../../sql-reference/statements/grant.md#privileges) from this user on the condition this user has also all required access granted with [GRANT OPTION](../../../sql-reference/statements/grant.md#granting-privilege-syntax). Options of the `GRANTEES` clause:
- `user` — Specifies a user this user can grant privileges to.
- `role` — Specifies a role this user can grant privileges to.

48
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View File

@ -6,7 +6,7 @@ sidebar_label: GRANT
# GRANT Statement
- Grants [privileges](#grant-privileges) to ClickHouse user accounts or roles.
- Grants [privileges](#privileges) to ClickHouse user accounts or roles.
- Assigns roles to user accounts or to the other roles.
To revoke privileges, use the [REVOKE](../../sql-reference/statements/revoke.md) statement. Also you can list granted privileges with the [SHOW GRANTS](../../sql-reference/statements/show.md#show-grants) statement.
@ -82,9 +82,9 @@ Privileges have a hierarchical structure. A set of permitted queries depends on
Hierarchy of privileges:
- [SELECT](#grant-select)
- [INSERT](#grant-insert)
- [ALTER](#grant-alter)
- [SELECT](#select)
- [INSERT](#insert)
- [ALTER](#alter)
- `ALTER TABLE`
- `ALTER UPDATE`
- `ALTER DELETE`
@ -115,7 +115,7 @@ Hierarchy of privileges:
- `ALTER VIEW REFRESH`
- `ALTER VIEW MODIFY QUERY`
- `ALTER VIEW MODIFY SQL SECURITY`
- [CREATE](#grant-create)
- [CREATE](#create)
- `CREATE DATABASE`
- `CREATE TABLE`
- `CREATE ARBITRARY TEMPORARY TABLE`
@ -123,21 +123,21 @@ Hierarchy of privileges:
- `CREATE VIEW`
- `CREATE DICTIONARY`
- `CREATE FUNCTION`
- [DROP](#grant-drop)
- [DROP](#drop)
- `DROP DATABASE`
- `DROP TABLE`
- `DROP VIEW`
- `DROP DICTIONARY`
- `DROP FUNCTION`
- [TRUNCATE](#grant-truncate)
- [OPTIMIZE](#grant-optimize)
- [SHOW](#grant-show)
- [TRUNCATE](#truncate)
- [OPTIMIZE](#optimize)
- [SHOW](#show)
- `SHOW DATABASES`
- `SHOW TABLES`
- `SHOW COLUMNS`
- `SHOW DICTIONARIES`
- [KILL QUERY](#grant-kill-query)
- [ACCESS MANAGEMENT](#grant-access-management)
- [KILL QUERY](#kill-query)
- [ACCESS MANAGEMENT](#access-management)
- `CREATE USER`
- `ALTER USER`
- `DROP USER`
@ -160,7 +160,7 @@ Hierarchy of privileges:
- `SHOW_QUOTAS`
- `SHOW_SETTINGS_PROFILES`
- `ROLE ADMIN`
- [SYSTEM](#grant-system)
- [SYSTEM](#system)
- `SYSTEM SHUTDOWN`
- `SYSTEM DROP CACHE`
- `SYSTEM DROP DNS CACHE`
@ -186,12 +186,12 @@ Hierarchy of privileges:
- `SYSTEM FLUSH DISTRIBUTED`
- `SYSTEM FLUSH LOGS`
- `CLUSTER` (see also `access_control_improvements.on_cluster_queries_require_cluster_grant` configuration directive)
- [INTROSPECTION](#grant-introspection)
- [INTROSPECTION](#introspection)
- `addressToLine`
- `addressToLineWithInlines`
- `addressToSymbol`
- `demangle`
- [SOURCES](#grant-sources)
- [SOURCES](#sources)
- `FILE`
- `URL`
- `REMOTE`
@ -200,16 +200,16 @@ Hierarchy of privileges:
- `JDBC`
- `HDFS`
- `S3`
- [dictGet](#grant-dictget)
- [displaySecretsInShowAndSelect](#grant-display-secrets)
- [NAMED COLLECTION ADMIN](#grant-named-collection-admin)
- [dictGet](#dictget)
- [displaySecretsInShowAndSelect](#display-secrets)
- [NAMED COLLECTION ADMIN](#named-collection-admin)
- `CREATE NAMED COLLECTION`
- `DROP NAMED COLLECTION`
- `ALTER NAMED COLLECTION`
- `SHOW NAMED COLLECTIONS`
- `SHOW NAMED COLLECTIONS SECRETS`
- `NAMED COLLECTION`
- [TABLE ENGINE](#grant-table-engine)
- [TABLE ENGINE](#table-engine)
Examples of how this hierarchy is treated:
@ -238,11 +238,11 @@ Examples of disallowed syntax:
- `GRANT CREATE USER(x) ON db.table TO user`
- `GRANT CREATE USER ON db.* TO user`
The special privilege [ALL](#grant-all) grants all the privileges to a user account or a role.
The special privilege [ALL](#all) grants all the privileges to a user account or a role.
By default, a user account or a role has no privileges.
If a user or a role has no privileges, it is displayed as [NONE](#grant-none) privilege.
If a user or a role has no privileges, it is displayed as [NONE](#none) privilege.
Some queries by their implementation require a set of privileges. For example, to execute the [RENAME](../../sql-reference/statements/optimize.md) query you need the following privileges: `SELECT`, `CREATE TABLE`, `INSERT` and `DROP TABLE`.
@ -326,8 +326,8 @@ Examples of how this hierarchy is treated:
**Notes**
- The `MODIFY SETTING` privilege allows modifying table engine settings. It does not affect settings or server configuration parameters.
- The `ATTACH` operation needs the [CREATE](#grant-create) privilege.
- The `DETACH` operation needs the [DROP](#grant-drop) privilege.
- The `ATTACH` operation needs the [CREATE](#create) privilege.
- The `DETACH` operation needs the [DROP](#drop) privilege.
- To stop mutation by the [KILL MUTATION](../../sql-reference/statements/kill.md#kill-mutation) query, you need to have a privilege to start this mutation. For example, if you want to stop the `ALTER UPDATE` query, you need the `ALTER UPDATE`, `ALTER TABLE`, or `ALTER` privilege.
### CREATE
@ -344,7 +344,7 @@ Allows executing [CREATE](../../sql-reference/statements/create/index.md) and [A
**Notes**
- To delete the created table, a user needs [DROP](#grant-drop).
- To delete the created table, a user needs [DROP](#drop).
### DROP
@ -498,7 +498,7 @@ Privilege level: `DICTIONARY`.
- `GRANT dictGet ON mydictionary TO john`
### displaySecretsInShowAndSelect {#grant-display-secrets}
### displaySecretsInShowAndSelect {#display-secrets}
Allows a user to view secrets in `SHOW` and `SELECT` queries if both
[`display_secrets_in_show_and_select` server setting](../../operations/server-configuration-parameters/settings#display_secrets_in_show_and_select)

40
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@ -19,25 +19,51 @@ Subquery is another `SELECT` query that may be specified in parenthesis inside `
## FINAL Modifier
When `FINAL` is specified, ClickHouse fully merges the data before returning the result and thus performs all data transformations that happen during merges for the given table engine.
When `FINAL` is specified, ClickHouse fully merges the data before returning the result. This also performs all data transformations that happen during merges for the given table engine.
It is applicable when selecting data from ReplacingMergeTree, SummingMergeTree, AggregatingMergeTree, CollapsingMergeTree and VersionedCollapsingMergeTree tables.
It is applicable when selecting data from from tables using the following table engines:
- `ReplacingMergeTree`
- `SummingMergeTree`
- `AggregatingMergeTree`
- `CollapsingMergeTree`
- `VersionedCollapsingMergeTree`
`SELECT` queries with `FINAL` are executed in parallel. The [max_final_threads](../../../operations/settings/settings.md#max-final-threads) setting limits the number of threads used.
There are drawbacks to using `FINAL` (see below).
### Drawbacks
Queries that use `FINAL` are executed slightly slower than similar queries that do not, because:
Queries that use `FINAL` execute slightly slower than similar queries that do not use `FINAL` because:
- Data is merged during query execution.
- Queries with `FINAL` read primary key columns in addition to the columns specified in the query.
- Queries with `FINAL` may read primary key columns in addition to the columns specified in the query.
`FINAL` requires additional compute and memory resources, as the processing that normally would occur at merge time must occur in memory at the time of the query. However, using FINAL is sometimes necessary in order to produce accurate results, and is less expensive than running `OPTIMIZE` to force a merge. It is also sometimes possible to use different queries that assume the background processes of the `MergeTree` engine haven’t happened yet and deal with it by applying aggregation (for example, to discard duplicates). If you need to use FINAL in your queries in order to get the required results, then it is okay to do so but be aware of the additional processing required.
`FINAL` requires additional compute and memory resources because the processing that normally would occur at merge time must occur in memory at the time of the query. However, using FINAL is sometimes necessary in order to produce accurate results (as data may not yet be fully merged). It is less expensive than running `OPTIMIZE` to force a merge.
As an alternative to using `FINAL`, it is sometimes possible to use different queries that assume the background processes of the `MergeTree` engine have not yet occurred and deal with it by applying an aggregation (for example, to discard duplicates). If you need to use `FINAL` in your queries in order to get the required results, it is okay to do so but be aware of the additional processing required.
`FINAL` can be applied automatically using [FINAL](../../../operations/settings/settings.md#final) setting to all tables in a query using a session or a user profile.
### Example Usage
**Using the `FINAL` keyword**
```sql
SELECT x, y FROM mytable FINAL WHERE x > 1;
```
**Using `FINAL` as a query-level setting**
```sql
SELECT x, y FROM mytable WHERE x > 1 SETTINGS final = 1;
```
**Using `FINAL` as a session-level setting**
```sql
SET final = 1;
SELECT x, y FROM mytable WHERE x > 1;
```
## Implementation Details
If the `FROM` clause is omitted, data will be read from the `system.one` table.

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@ -165,6 +165,68 @@ Result:
└───┴────┴─────┘
```
## [experimental] Join with inequality conditions
:::note
This feature is experimental. To use it, set `allow_experimental_join_condition` to 1 in your configuration files or by using the `SET` command:
```sql
SET allow_experimental_join_condition=1
```
Otherwise, you'll get `INVALID_JOIN_ON_EXPRESSION`.
:::
Clickhouse currently supports `ALL INNER/LEFT/RIGHT/FULL JOIN` with inequality conditions in addition to equality conditions. The inequality conditions are supported only for `hash` and `grace_hash` join algorithms. The inequality conditions are not supported with `join_use_nulls`.
**Example**
Table `t1`:
```
┌─key──┬─attr─┬─a─┬─b─┬─c─┐
│ key1 │ a │ 1 │ 1 │ 2 │
│ key1 │ b │ 2 │ 3 │ 2 │
│ key1 │ c │ 3 │ 2 │ 1 │
│ key1 │ d │ 4 │ 7 │ 2 │
│ key1 │ e │ 5 │ 5 │ 5 │
│ key2 │ a2 │ 1 │ 1 │ 1 │
│ key4 │ f │ 2 │ 3 │ 4 │
└──────┴──────┴───┴───┴───┘
```
Table `t2`
```
┌─key──┬─attr─┬─a─┬─b─┬─c─┐
│ key1 │ A │ 1 │ 2 │ 1 │
│ key1 │ B │ 2 │ 1 │ 2 │
│ key1 │ C │ 3 │ 4 │ 5 │
│ key1 │ D │ 4 │ 1 │ 6 │
│ key3 │ a3 │ 1 │ 1 │ 1 │
│ key4 │ F │ 1 │ 1 │ 1 │
└──────┴──────┴───┴───┴───┘
```
```sql
SELECT t1.*, t2.* from t1 LEFT JOIN t2 ON t1.key = t2.key and (t1.a < t2.a) ORDER BY (t1.key, t1.attr, t2.key, t2.attr);
```
```
key1 a 1 1 2 key1 B 2 1 2
key1 a 1 1 2 key1 C 3 4 5
key1 a 1 1 2 key1 D 4 1 6
key1 b 2 3 2 key1 C 3 4 5
key1 b 2 3 2 key1 D 4 1 6
key1 c 3 2 1 key1 D 4 1 6
key1 d 4 7 2 0 0 \N
key1 e 5 5 5 0 0 \N
key2 a2 1 1 1 0 0 \N
key4 f 2 3 4 0 0 \N
```
## NULL values in JOIN keys
The NULL is not equal to any value, including itself. It means that if a JOIN key has a NULL value in one table, it won't match a NULL value in the other table.
@ -273,7 +335,7 @@ For example, consider the following tables:
## PASTE JOIN Usage
The result of `PASTE JOIN` is a table that contains all columns from left subquery followed by all columns from the right subquery.
The rows are matched based on their positions in the original tables (the order of rows should be defined).
The rows are matched based on their positions in the original tables (the order of rows should be defined).
If the subqueries return a different number of rows, extra rows will be cut.
Example:

4
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@ -11,7 +11,7 @@ N.B. `SHOW CREATE (TABLE|DATABASE|USER)` hides secrets unless
is turned on,
[`format_display_secrets_in_show_and_select` format setting](../../operations/settings/formats#format_display_secrets_in_show_and_select)
is turned on and user has
[`displaySecretsInShowAndSelect`](grant.md#grant-display-secrets) privilege.
[`displaySecretsInShowAndSelect`](grant.md#display-secrets) privilege.
## SHOW CREATE TABLE | DICTIONARY | VIEW | DATABASE
@ -466,7 +466,7 @@ SHOW [CURRENT] QUOTA
```
## SHOW ACCESS
Shows all [users](../../guides/sre/user-management/index.md#user-account-management), [roles](../../guides/sre/user-management/index.md#role-management), [profiles](../../guides/sre/user-management/index.md#settings-profiles-management), etc. and all their [grants](../../sql-reference/statements/grant.md#grant-privileges).
Shows all [users](../../guides/sre/user-management/index.md#user-account-management), [roles](../../guides/sre/user-management/index.md#role-management), [profiles](../../guides/sre/user-management/index.md#settings-profiles-management), etc. and all their [grants](../../sql-reference/statements/grant.md#privileges).
**Syntax**

12
docs/en/sql-reference/statements/system.md
View File

@ -532,3 +532,15 @@ If there's a refresh in progress for the given view, interrupt and cancel it. Ot
```sql
SYSTEM CANCEL VIEW [db.]name
```
### SYSTEM UNLOAD PRIMARY KEY
Unload the primary keys for the given table or for all tables.
```sql
SYSTEM UNLOAD PRIMARY KEY [db.]name
```
```sql
SYSTEM UNLOAD PRIMARY KEY
```

2
docs/ru/interfaces/third-party/gui.md vendored
View File

@ -150,7 +150,7 @@ sidebar_label: "Визуальные интерфейсы от сторонни
### ClickVisual {#clickvisual}
[ClickVisual](https://clickvisual.gocn.vip/) ClickVisual — это легкодоступная платформа для запросов, анализа и уведомлений. Документация на китайском.
[ClickVisual](https://clickvisual.net/) ClickVisual — это легкодоступная платформа для запросов, анализа и уведомлений. Документация на китайском.
Основные возможности:

11
docs/ru/operations/settings/settings.md
View File

@ -3447,17 +3447,6 @@ SELECT
FROM fuse_tbl
```
## allow_experimental_database_replicated {#allow_experimental_database_replicated}
Позволяет создавать базы данных с движком [Replicated](../../engines/database-engines/replicated.md).
Возможные значения:
- 0 — Disabled.
- 1 — Enabled.
Значение по умолчанию: `0`.
## database_replicated_initial_query_timeout_sec {#database_replicated_initial_query_timeout_sec}
Устанавливает, как долго начальный DDL-запрос должен ждать, пока реплицированная база данных прецессирует предыдущие записи очереди DDL в секундах.

59
docs/ru/sql-reference/aggregate-functions/reference/argmax.md
View File

@ -5,7 +5,7 @@ sidebar_position: 106
# argMax {#agg-function-argmax}
Вычисляет значение `arg` при максимальном значении `val`.
Вычисляет значение `arg` при максимальном значении `val`. Если несколько строк имеют одинаковое `val`, в которых равное значение является максимальным, то возвращаемое `arg` не является детерминированным. Обе части, arg и max, ведут себя как агрегатные функции, они обе пропускают Null во время обработки и возвращают не Null значения, если не Null значения доступны.
**Синтаксис**
@ -49,3 +49,60 @@ SELECT argMax(user, salary), argMax(tuple(user, salary), salary) FROM salary;
│ director │ ('director',5000) │
└──────────────────────┴─────────────────────────────────────┘
```
**Дополнительный пример**
```sql
CREATE TABLE test
(
a Nullable(String),
b Nullable(Int64)
)
ENGINE = Memory AS
SELECT *
FROM VALUES(('a', 1), ('b', 2), ('c', 2), (NULL, 3), (NULL, NULL), ('d', NULL));
select * from test;
┌─a────┬────b─┐
│ a │ 1 │
│ b │ 2 │
│ c │ 2 │
│ ᴺᵁᴸᴸ │ 3 │
│ ᴺᵁᴸᴸ │ ᴺᵁᴸᴸ │
│ d │ ᴺᵁᴸᴸ │
└──────┴──────┘
SELECT argMax(a, b), max(b) FROM test;
┌─argMax(a, b)─┬─max(b)─┐
│ b │ 3 │ -- argMax = 'b' потому что это первое not Null значение, max(b) из другой строки!
└──────────────┴────────┘
SELECT argMax(tuple(a), b) FROM test;
┌─argMax(tuple(a), b)─┐
│ (NULL) │ -- Кортеж `Tuple`, который содержит только `NULL` значения является не `NULL` кортежем, поэтому агрегатыне функции не будут пропускать эту строку с `NULL` значениями.
└─────────────────────┘
SELECT (argMax((a, b), b) as t).1 argMaxA, t.2 argMaxB FROM test;
┌─argMaxA─┬─argMaxB─┐
│ ᴺᵁᴸᴸ │ 3 │ -- Вы можете использовать кортеж Tuple и получить оба значения для соответсвующего max(b).
└─────────┴─────────┘
SELECT argMax(a, b), max(b) FROM test WHERE a IS NULL AND b IS NULL;
┌─argMax(a, b)─┬─max(b)─┐
│ ᴺᵁᴸᴸ │ ᴺᵁᴸᴸ │ -- Все агрегированные строки содержат хотя бы одно `NULL` значение, поэтому все строки пропускаются и результатом будет `NULL`.
└──────────────┴────────┘
SELECT argMax(a, (b,a)) FROM test;
┌─argMax(a, tuple(b, a))─┐
│ c │ -- Есть две строки с b=2, кортеж `Tuple` в функции `Max` позволяет получить не первый `arg`.
└────────────────────────┘
SELECT argMax(a, tuple(b)) FROM test;
┌─argMax(a, tuple(b))─┐
│ b │ -- Кортеж `Tuple` может использоваться в `Max`, чтобы не пропускать `NULL` значения в `Max`.
└─────────────────────┘
```
**Смотрите также**
- [Tuple](/docs/ru/sql-reference/data-types/tuple.md)

246
docs/ru/sql-reference/functions/uuid-functions.md
View File

@ -51,6 +51,174 @@ SELECT generateUUIDv4(1), generateUUIDv4(2)
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## generateUUIDv7 {#uuidv7-function-generate}
Генерирует идентификатор [UUID версии 7](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04). Генерируемый UUID состоит из 48-битной временной метки (Unix time в миллисекундах), маркеров версии 7 и варианта 2, монотонно возрастающего счётчика для данной временной метки и случайных данных в указанной ниже последовательности. Для каждой новой временной метки счётчик стартует с нового случайного значения, а для следующих UUIDv7 он увеличивается на единицу. В случае переполнения счётчика временная метка принудительно увеличивается на 1, и счётчик снова стартует со случайного значения. Монотонность возрастания счётчика для каждой временной метки гарантируется между всеми одновременно работающими функциями `generateUUIDv7`.
```
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms | ver | counter_high_bits |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
|var| counter_low_bits |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| rand_b |
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
```
::::note
На апрель 2024 года UUIDv7 находится в статусе черновика и его раскладка по битам может в итоге измениться.
::::
**Синтаксис**
``` sql
generateUUIDv7([x])
```
**Аргументы**
- `x` — [выражение](../syntax.md#syntax-expressions), возвращающее значение одного из [поддерживаемых типов данных](../data-types/index.md#data_types). Значение используется, чтобы избежать [склейки одинаковых выражений](index.md#common-subexpression-elimination), если функция вызывается несколько раз в одном запросе. Необязательный параметр.
**Возвращаемое значение**
Значение типа [UUID](../../sql-reference/functions/uuid-functions.md).
**Пример использования**
Этот пример демонстрирует, как создать таблицу с UUID-колонкой и добавить в нее сгенерированный UUIDv7.
``` sql
CREATE TABLE t_uuid (x UUID) ENGINE=TinyLog
INSERT INTO t_uuid SELECT generateUUIDv7WithCounter()
SELECT * FROM t_uuid
```
``` text
┌────────────────────────────────────x─┐
│ 018f05c7-56e3-7ac3-93e9-1d93c4218e0e │
└──────────────────────────────────────┘
```
**Пример использования, для генерации нескольких значений в одной строке**
```sql
SELECT generateUUIDv7(1), generateUUIDv7(2)
┌─generateUUIDv7(1)────────────────────┬─generateUUIDv7(2)────────────────────┐
│ 018f05c9-4ab8-7b86-b64e-c9f03fbd45d1 │ 018f05c9-4ab8-7b86-b64e-c9f12efb7e16 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## generateUUIDv7ThreadMonotonic {#uuidv7threadmonotonic-function-generate}
Генерирует идентификатор [UUID версии 7](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04). Генерируемый UUID состоит из 48-битной временной метки (Unix time в миллисекундах), маркеров версии 7 и варианта 2, монотонно возрастающего счётчика для данной временной метки и случайных данных в указанной ниже последовательности. Для каждой новой временной метки счётчик стартует с нового случайного значения, а для следующих UUIDv7 он увеличивается на единицу. В случае переполнения счётчика временная метка принудительно увеличивается на 1, и счётчик снова стартует со случайного значения. Данная функция является ускоренным аналогом функции `generateUUIDv7` за счёт потери гарантии монотонности счётчика при одной и той же метке времени между одновременно исполняемыми разными запросами. Монотонность счётчика гарантируется только в пределах одного треда, исполняющего данную функцию для генерации нескольких UUID.
**Синтаксис**
``` sql
generateUUIDv7ThreadMonotonic([x])
```
**Аргументы**
- `x` — [выражение](../syntax.md#syntax-expressions), возвращающее значение одного из [поддерживаемых типов данных](../data-types/index.md#data_types). Значение используется, чтобы избежать [склейки одинаковых выражений](index.md#common-subexpression-elimination), если функция вызывается несколько раз в одном запросе. Необязательный параметр.
**Возвращаемое значение**
Значение типа [UUID](../../sql-reference/functions/uuid-functions.md).
**Пример использования**
Этот пример демонстрирует, как создать таблицу с UUID-колонкой и добавить в нее сгенерированный UUIDv7.
``` sql
CREATE TABLE t_uuid (x UUID) ENGINE=TinyLog
INSERT INTO t_uuid SELECT generateUUIDv7ThreadMonotonic()
SELECT * FROM t_uuid
```
``` text
┌────────────────────────────────────x─┐
│ 018f05e2-e3b2-70cb-b8be-64b09b626d32 │
└──────────────────────────────────────┘
```
**Пример использования, для генерации нескольких значений в одной строке**
```sql
SELECT generateUUIDv7ThreadMonotonic(1), generateUUIDv7ThreadMonotonic(7)
┌─generateUUIDv7ThreadMonotonic(1)─────┬─generateUUIDv7ThreadMonotonic(2)─────┐
│ 018f05e1-14ee-7bc5-9906-207153b400b1 │ 018f05e1-14ee-7bc5-9906-2072b8e96758 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## generateUUIDv7NonMonotonic {#uuidv7nonmonotonic-function-generate}
Генерирует идентификатор [UUID версии 7](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04). Генерируемый UUID состоит из 48-битной временной метки (Unix time в миллисекундах), маркеров версии 7 и варианта 2, и случайных данных в следующей последовательности:
```
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| unix_ts_ms | ver | rand_a |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
|var| rand_b |
├─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┼─┤
| rand_b |
└─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
```
::::note
На апрель 2024 года UUIDv7 находится в статусе черновика и его раскладка по битам может в итоге измениться.
::::
**Синтаксис**
``` sql
generateUUIDv7NonMonotonic([x])
```
**Аргументы**
- `x` — [выражение](../syntax.md#syntax-expressions), возвращающее значение одного из [поддерживаемых типов данных](../data-types/index.md#data_types). Значение используется, чтобы избежать [склейки одинаковых выражений](index.md#common-subexpression-elimination), если функция вызывается несколько раз в одном запросе. Необязательный параметр.
**Возвращаемое значение**
Значение типа [UUID](../../sql-reference/functions/uuid-functions.md).
**Пример использования**
Этот пример демонстрирует, как создать таблицу с UUID-колонкой и добавить в нее сгенерированный UUIDv7.
``` sql
CREATE TABLE t_uuid (x UUID) ENGINE=TinyLog
INSERT INTO t_uuid SELECT generateUUIDv7NonMonotonic()
SELECT * FROM t_uuid
```
``` text
┌────────────────────────────────────x─┐
│ 018f05af-f4a8-778f-beee-1bedbc95c93b │
└──────────────────────────────────────┘
```
**Пример использования, для генерации нескольких значений в одной строке**
```sql
SELECT generateUUIDv7NonMonotonic(1), generateUUIDv7NonMonotonic(7)
┌─generateUUIDv7NonMonotonic(1)────────┬─generateUUIDv7NonMonotonic(2)────────┐
│ 018f05b1-8c2e-7567-a988-48d09606ae8c │ 018f05b1-8c2e-7946-895b-fcd7635da9a0 │
└──────────────────────────────────────┴──────────────────────────────────────┘
```
## empty {#empty}
Проверяет, является ли входной UUID пустым.
@ -259,6 +427,84 @@ SELECT
└──────────────────┴──────────────────────────────────────┘
```
## UUIDToNum {#uuidtonum}
Принимает UUID и возвращает в виде набора байт в [FixedString(16)](../../sql-reference/functions/uuid-functions.md). Также принимает необязательный второй параметр - вариант представления UUID, по умолчанию 1 - `Big-endian` (2 означает представление в формате `Microsoft`). Данная функция заменяет последовательность из двух отдельных функций `UUIDStringToNum(toString(uuid))`, так что промежуточная конвертация из UUID в String для извлечения набора байт из UUID не требуется.
``` sql
UUIDToNum(UUID[, variant = 1])
```
**Возвращаемое значение**
FixedString(16)
**Примеры использования**
``` sql
SELECT
toUUID('612f3c40-5d3b-217e-707b-6a546a3d7b29') AS uuid,
UUIDToNum(uuid) AS bytes
```
``` text
┌─uuid─────────────────────────────────┬─bytes────────────┐
│ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │ a/<@];!~p{jTj={) │
└──────────────────────────────────────┴──────────────────┘
```
``` sql
SELECT
toUUID('612f3c40-5d3b-217e-707b-6a546a3d7b29') AS uuid,
UUIDToNum(uuid, 2) AS bytes
```
```text
┌─uuid─────────────────────────────────┬─bytes────────────┐
│ 612f3c40-5d3b-217e-707b-6a546a3d7b29 │ @</a;]~!p{jTj={) │
└──────────────────────────────────────┴──────────────────┘
```
## UUIDv7ToDateTime {#uuidv7todatetime}
Принимает UUID версии 7 и извлекает из него временную метку.
``` sql
UUIDv7ToDateTime(uuid[, timezone])
```
**Параметры**
- `uuid` — [UUID](../data-types/uuid.md) версии 7.
- `timezone` — [Часовой пояс](../../operations/server-configuration-parameters/settings.md#server_configuration_parameters-timezone) для возвращаемого значения (необязательный параметр). [String](../../sql-reference/data-types/string.md).
**Возвращаемое значение**
- Временная метка с миллисекундной точностью (1970-01-01 00:00:00.000 в случае UUID не версии 7).
Type: [DateTime64(3)](/docs/ru/sql-reference/data-types/datetime64.md).
**Примеры использования**
``` sql
SELECT UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'))
```
```text
┌─UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'))─┐
│ 2024-04-22 15:30:29.048 │
└──────────────────────────────────────────────────────────────────┘
```
``` sql
SELECT UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'), 'America/New_York')
```
```text
┌─UUIDv7ToDateTime(toUUID('018f05c9-4ab8-7b86-b64e-c9f03fbd45d1'), 'America/New_York')─┐
│ 2024-04-22 08:30:29.048 │
└──────────────────────────────────────────────────────────────────────────────────────┘
```
## serverUUID() {#server-uuid}
Возвращает случайный и уникальный UUID, который генерируется при первом запуске сервера и сохраняется навсегда. Результат записывается в файл `uuid`, расположенный в каталоге сервера ClickHouse `/var/lib/clickhouse/`.

2
docs/zh/interfaces/third-party/gui.md vendored
View File

@ -93,7 +93,7 @@ ClickHouse Web 界面 [Tabix](https://github.com/tabixio/tabix).
### ClickVisual {#clickvisual}
[ClickVisual](https://clickvisual.gocn.vip/) ClickVisual是一款轻量级的开源日志查询、分析、报警的可视化平台！
[ClickVisual](https://clickvisual.net/) ClickVisual是一款轻量级的开源日志查询、分析、报警的可视化平台！
特征：

10
programs/benchmark/Benchmark.cpp
View File

@ -7,6 +7,8 @@
#include <random>
#include <string_view>
#include <pcg_random.hpp>
#include <Poco/UUID.h>
#include <Poco/UUIDGenerator.h>
#include <Poco/Util/Application.h>
#include <Common/Stopwatch.h>
#include <Common/ThreadPool.h>
@ -80,6 +82,7 @@ public:
double max_time_,
size_t confidence_,
const String & query_id_,
const String & query_id_prefix_,
const String & query_to_execute_,
size_t max_consecutive_errors_,
bool continue_on_errors_,
@ -98,6 +101,7 @@ public:
max_time(max_time_),
confidence(confidence_),
query_id(query_id_),
query_id_prefix(query_id_prefix_),
query_to_execute(query_to_execute_),
continue_on_errors(continue_on_errors_),
max_consecutive_errors(max_consecutive_errors_),
@ -205,6 +209,7 @@ private:
double max_time;
size_t confidence;
String query_id;
String query_id_prefix;
String query_to_execute;
bool continue_on_errors;
size_t max_consecutive_errors;
@ -463,8 +468,11 @@ private:
RemoteQueryExecutor executor(
*entry, query, {}, global_context, nullptr, Scalars(), Tables(), query_processing_stage);
if (!query_id.empty())
executor.setQueryId(query_id);
else if (!query_id_prefix.empty())
executor.setQueryId(query_id_prefix + "_" + Poco::UUIDGenerator().createRandom().toString());
Progress progress;
executor.setProgressCallback([&progress](const Progress & value) { progress.incrementPiecewiseAtomically(value); });
@ -617,6 +625,7 @@ int mainEntryClickHouseBenchmark(int argc, char ** argv)
("stacktrace", "print stack traces of exceptions")
("confidence", value<size_t>()->default_value(5), "set the level of confidence for T-test [0=80%, 1=90%, 2=95%, 3=98%, 4=99%, 5=99.5%(default)")
("query_id", value<std::string>()->default_value(""), "")
("query_id_prefix", value<std::string>()->default_value(""), "")
("max-consecutive-errors", value<size_t>()->default_value(0), "set number of allowed consecutive errors")
("ignore-error,continue_on_errors", "continue testing even if a query fails")
("reconnect", "establish new connection for every query")
@ -671,6 +680,7 @@ int mainEntryClickHouseBenchmark(int argc, char ** argv)
options["timelimit"].as<double>(),
options["confidence"].as<size_t>(),
options["query_id"].as<std::string>(),
options["query_id_prefix"].as<std::string>(),
options["query"].as<std::string>(),
options["max-consecutive-errors"].as<size_t>(),
options.count("ignore-error"),

4
programs/client/Client.cpp
View File

@ -918,11 +918,13 @@ bool Client::processWithFuzzing(const String & full_query)
}
void Client::printHelpMessage(const OptionsDescription & options_description)
void Client::printHelpMessage(const OptionsDescription & options_description, bool verbose)
{
std::cout << options_description.main_description.value() << "\n";
std::cout << options_description.external_description.value() << "\n";
std::cout << options_description.hosts_and_ports_description.value() << "\n";
if (verbose)
std::cout << "All settings are documented at https://clickhouse.com/docs/en/operations/settings/settings.\n\n";
std::cout << "In addition, --param_name=value can be specified for substitution of parameters for parametrized queries.\n";
std::cout << "\nSee also: https://clickhouse.com/docs/en/integrations/sql-clients/cli\n";
}

2
programs/client/Client.h
View File

@ -25,7 +25,7 @@ protected:
String getName() const override { return "client"; }
void printHelpMessage(const OptionsDescription & options_description) override;
void printHelpMessage(const OptionsDescription & options_description, bool verbose) override;
void addOptions(OptionsDescription & options_description) override;

2
programs/disks/CommandList.cpp
View File

@ -84,7 +84,7 @@ private:
for (const auto & file_name : file_names)
{
auto path = relative_path + "/" + file_name;
auto path = relative_path.empty() ? file_name : (relative_path + "/" + file_name);
if (disk->isDirectory(path))
listRecursive(disk, path);
}

3
programs/disks/DisksApp.cpp
View File

@ -97,7 +97,8 @@ void DisksApp::processOptions()
DisksApp::~DisksApp()
{
global_context->shutdown();
if (global_context)
global_context->shutdown();
}
void DisksApp::init(std::vector<String> & common_arguments)

9
programs/install/Install.cpp
View File

@ -729,6 +729,15 @@ int mainEntryClickHouseInstall(int argc, char ** argv)
}
}
/// Don't allow relative paths because install script may cd to / when installing
/// And having path=./ may break the system
if (log_path.is_relative())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Log path is relative: {}", log_path.string());
if (data_path.is_relative())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Data path is relative: {}", data_path.string());
if (pid_path.is_relative())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Pid path is relative: {}", pid_path.string());
/// Create directories for data and log.
if (fs::exists(log_path))

6
programs/keeper/CMakeLists.txt
View File

@ -121,9 +121,12 @@ if (BUILD_STANDALONE_KEEPER)
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/DiskType.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/IObjectStorage.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataOperationsHolder.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageFromPlainObjectStorageOperations.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageFromPlainObjectStorage.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageFromPlainRewritableObjectStorage.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageFromDisk.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataFromDiskTransactionState.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageTransactionState.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/DiskObjectStorageMetadata.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageFromDiskTransactionOperations.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/DiskObjectStorage.cpp
@ -137,6 +140,7 @@ if (BUILD_STANDALONE_KEEPER)
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/S3/S3Capabilities.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/S3/diskSettings.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/S3/DiskS3Utils.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/CommonPathPrefixKeyGenerator.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/ObjectStorageFactory.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/MetadataStorageFactory.cpp
${CMAKE_CURRENT_SOURCE_DIR}/../../src/Disks/ObjectStorages/RegisterDiskObjectStorage.cpp

51
programs/local/LocalServer.cpp
View File

@ -3,6 +3,7 @@
#include <sys/resource.h>
#include <Common/logger_useful.h>
#include <Common/formatReadable.h>
#include <Core/UUID.h>
#include <base/getMemoryAmount.h>
#include <Poco/Util/XMLConfiguration.h>
#include <Poco/String.h>
@ -35,7 +36,6 @@
#include <Loggers/OwnPatternFormatter.h>
#include <IO/ReadBufferFromFile.h>
#include <IO/ReadBufferFromString.h>
#include <IO/WriteBufferFromFileDescriptor.h>
#include <IO/UseSSL.h>
#include <IO/SharedThreadPools.h>
#include <Parsers/ASTInsertQuery.h>
@ -48,7 +48,6 @@
#include <Dictionaries/registerDictionaries.h>
#include <Disks/registerDisks.h>
#include <Formats/registerFormats.h>
#include <Formats/FormatFactory.h>
#include <boost/algorithm/string/replace.hpp>
#include <boost/program_options/options_description.hpp>
#include <base/argsToConfig.h>
@ -211,7 +210,7 @@ void LocalServer::tryInitPath()
else
{
// The path is not provided explicitly - use a unique path in the system temporary directory
// (or in the current dir if temporary don't exist)
// (or in the current dir if a temporary doesn't exist)
LoggerRawPtr log = &logger();
std::filesystem::path parent_folder;
std::filesystem::path default_path;
@ -237,39 +236,30 @@ void LocalServer::tryInitPath()
/// as we can't accurately distinguish those situations we don't touch any existent folders
/// we just try to pick some free name for our working folder
default_path = parent_folder / fmt::format("clickhouse-local-{}-{}-{}", getpid(), time(nullptr), randomSeed());
default_path = parent_folder / fmt::format("clickhouse-local-{}", UUIDHelpers::generateV4());
if (exists(default_path))
throw Exception(ErrorCodes::FILE_ALREADY_EXISTS, "Unsuccessful attempt to create working directory: {} already exists.", default_path.string());
if (fs::exists(default_path))
throw Exception(ErrorCodes::FILE_ALREADY_EXISTS, "Unsuccessful attempt to set up the working directory: {} already exists.", default_path.string());
create_directory(default_path);
/// The directory can be created lazily during the runtime.
temporary_directory_to_delete = default_path;
path = default_path.string();
LOG_DEBUG(log, "Working directory created: {}", path);
}
if (path.back() != '/')
path += '/';
global_context->setPath(fs::path(path) / "");
fs::create_directories(fs::path(path) / "user_defined/");
fs::create_directories(fs::path(path) / "data/");
fs::create_directories(fs::path(path) / "metadata/");
fs::create_directories(fs::path(path) / "metadata_dropped/");
global_context->setTemporaryStoragePath(fs::path(path) / "tmp" / "", 0);
global_context->setFlagsPath(fs::path(path) / "flags" / "");
global_context->setPath(path);
global_context->setTemporaryStoragePath(path + "tmp/", 0);
global_context->setFlagsPath(path + "flags");
global_context->setUserFilesPath(""); // user's files are everywhere
global_context->setUserFilesPath(""); /// user's files are everywhere
std::string user_scripts_path = config().getString("user_scripts_path", fs::path(path) / "user_scripts/");
global_context->setUserScriptsPath(user_scripts_path);
fs::create_directories(user_scripts_path);
/// top_level_domains_lists
const std::string & top_level_domains_path = config().getString("top_level_domains_path", path + "top_level_domains/");
const std::string & top_level_domains_path = config().getString("top_level_domains_path", fs::path(path) / "top_level_domains/");
if (!top_level_domains_path.empty())
TLDListsHolder::getInstance().parseConfig(fs::path(top_level_domains_path) / "", config());
}
@ -299,10 +289,9 @@ void LocalServer::cleanup()
// Delete the temporary directory if needed.
if (temporary_directory_to_delete)
{
const auto dir = *temporary_directory_to_delete;
LOG_DEBUG(&logger(), "Removing temporary directory: {}", temporary_directory_to_delete->string());
fs::remove_all(*temporary_directory_to_delete);
temporary_directory_to_delete.reset();
LOG_DEBUG(&logger(), "Removing temporary directory: {}", dir.string());
remove_all(dir);
}
}
catch (...)
@ -481,7 +470,9 @@ try
registerFormats();
processConfig();
adjustSettings();
SCOPE_EXIT({ cleanup(); });
initTTYBuffer(toProgressOption(config().getString("progress", "default")));
ASTAlterCommand::setFormatAlterCommandsWithParentheses(true);
@ -531,16 +522,12 @@ try
}
catch (const DB::Exception & e)
{
cleanup();
bool need_print_stack_trace = config().getBool("stacktrace", false);
std::cerr << getExceptionMessage(e, need_print_stack_trace, true) << std::endl;
return e.code() ? e.code() : -1;
}
catch (...)
{
cleanup();
std::cerr << getCurrentExceptionMessage(false) << std::endl;
return getCurrentExceptionCode();
}
@ -689,6 +676,7 @@ void LocalServer::processConfig()
/// NOTE: it is important to apply any overrides before
/// setDefaultProfiles() calls since it will copy current context (i.e.
/// there is separate context for Buffer tables).
adjustSettings();
applySettingsOverridesForLocal(global_context);
applyCmdOptions(global_context);
@ -705,6 +693,7 @@ void LocalServer::processConfig()
if (config().has("path"))
{
String path = global_context->getPath();
fs::create_directories(fs::path(path));
/// Lock path directory before read
status.emplace(fs::path(path) / "status", StatusFile::write_full_info);
@ -774,10 +763,12 @@ void LocalServer::processConfig()
}
void LocalServer::printHelpMessage([[maybe_unused]] const OptionsDescription & options_description)
void LocalServer::printHelpMessage(const OptionsDescription & options_description, bool verbose)
{
std::cout << getHelpHeader() << "\n";
std::cout << options_description.main_description.value() << "\n";
if (verbose)
std::cout << "All settings are documented at https://clickhouse.com/docs/en/operations/settings/settings.\n\n";
std::cout << getHelpFooter() << "\n";
std::cout << "In addition, --param_name=value can be specified for substitution of parameters for parametrized queries.\n";
std::cout << "\nSee also: https://clickhouse.com/docs/en/operations/utilities/clickhouse-local/\n";

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