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Merge branch 'master' into dont-optimize-trivial-insert-select

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This commit is contained in:
Alexey Milovidov 2024-06-26 00:02:10 +02:00
commit 6fd95c43f6
612 changed files with 13708 additions and 4960 deletions
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6
.github/PULL_REQUEST_TEMPLATE.md vendored
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@ -6,6 +6,7 @@ tests/ci/cancel_and_rerun_workflow_lambda/app.py
-->
### Changelog category (leave one):
- New Feature
- Experimental Feature
- Improvement
- Performance Improvement
- Backward Incompatible Change
@ -48,9 +49,7 @@ At a minimum, the following information should be added (but add more as needed)
- [ ] <!---ci_include_stateful--> Allow: Stateful tests
- [ ] <!---ci_include_integration--> Allow: Integration Tests
- [ ] <!---ci_include_performance--> Allow: Performance tests
- [ ] <!---ci_set_normal_builds--> Allow: Normal Builds
- [ ] <!---ci_set_special_builds--> Allow: Special Builds
- [ ] <!---ci_set_non_required--> Allow: All NOT Required Checks
- [ ] <!---ci_set_builds--> Allow: All Builds
- [ ] <!---batch_0_1--> Allow: batch 1, 2 for multi-batch jobs
- [ ] <!---batch_2_3--> Allow: batch 3, 4, 5, 6 for multi-batch jobs
---
@ -61,6 +60,7 @@ At a minimum, the following information should be added (but add more as needed)
- [ ] <!---ci_exclude_aarch64|release|debug--> Exclude: All with aarch64, release, debug
---
- [ ] <!---do_not_test--> Do not test
- [ ] <!---woolen_wolfdog--> Woolen Wolfdog
- [ ] <!---upload_all--> Upload binaries for special builds
- [ ] <!---no_merge_commit--> Disable merge-commit
- [ ] <!---no_ci_cache--> Disable CI cache

6
.github/workflows/backport_branches.yml vendored
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@ -70,7 +70,7 @@ jobs:
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Compatibility check (amd64)
test_name: Compatibility check (release)
runner_type: style-checker
data: ${{ needs.RunConfig.outputs.data }}
CompatibilityCheckAarch64:
@ -194,7 +194,7 @@ jobs:
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Install packages (amd64)
test_name: Install packages (release)
runner_type: style-checker
data: ${{ needs.RunConfig.outputs.data }}
run_command: |
@ -204,7 +204,7 @@ jobs:
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Install packages (arm64)
test_name: Install packages (aarch64)
runner_type: style-checker-aarch64
data: ${{ needs.RunConfig.outputs.data }}
run_command: |

20
.github/workflows/master.yml vendored
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@ -104,10 +104,9 @@ jobs:
with:
stage: Tests_2
data: ${{ needs.RunConfig.outputs.data }}
# stage for jobs that do not prohibit merge
Tests_3:
# Test_3 should not wait for Test_1/Test_2 and should not be blocked by them on master branch since all jobs need to run there.
needs: [RunConfig, Builds_1, Builds_2]
needs: [RunConfig, Builds_1]
if: ${{ !failure() && !cancelled() && contains(fromJson(needs.RunConfig.outputs.data).stages_data.stages_to_do, 'Tests_3') }}
uses: ./.github/workflows/reusable_test_stage.yml
with:
@ -115,25 +114,16 @@ jobs:
data: ${{ needs.RunConfig.outputs.data }}
################################# Reports #################################
# Reports should be run even if Builds_1/2 failed - put them separately in wf (not in Tests_1/2)
Builds_1_Report:
# Reports should run even if Builds_1/2 fail - run them separately, not in Tests_1/2/3
Builds_Report:
# run report check for failed builds to indicate the CI error
if: ${{ !cancelled() && needs.RunConfig.result == 'success' && contains(fromJson(needs.RunConfig.outputs.data).jobs_data.jobs_to_do, 'ClickHouse build check') }}
needs: [RunConfig, Builds_1]
needs: [RunConfig, Builds_1, Builds_2]
uses: ./.github/workflows/reusable_test.yml
with:
test_name: ClickHouse build check
runner_type: style-checker-aarch64
data: ${{ needs.RunConfig.outputs.data }}
Builds_2_Report:
# run report check for failed builds to indicate the CI error
if: ${{ !cancelled() && needs.RunConfig.result == 'success' && contains(fromJson(needs.RunConfig.outputs.data).jobs_data.jobs_to_do, 'ClickHouse special build check') }}
needs: [RunConfig, Builds_2]
uses: ./.github/workflows/reusable_test.yml
with:
test_name: ClickHouse special build check
runner_type: style-checker-aarch64
data: ${{ needs.RunConfig.outputs.data }}
MarkReleaseReady:
if: ${{ !failure() && !cancelled() }}
@ -165,7 +155,7 @@ jobs:
FinishCheck:
if: ${{ !cancelled() }}
needs: [RunConfig, Builds_1, Builds_2, Builds_1_Report, Builds_2_Report, Tests_1, Tests_2, Tests_3]
needs: [RunConfig, Builds_1, Builds_2, Builds_Report, Tests_1, Tests_2, Tests_3]
runs-on: [self-hosted, style-checker-aarch64]
steps:
- name: Check out repository code

31
.github/workflows/pull_request.yml vendored
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@ -126,16 +126,16 @@ jobs:
with:
stage: Builds_2
data: ${{ needs.RunConfig.outputs.data }}
# stage for running non-required checks without being blocked by required checks (Test_1) if corresponding settings is selected
Tests_2:
needs: [RunConfig, Builds_2]
needs: [RunConfig, Builds_1]
if: ${{ !failure() && !cancelled() && contains(fromJson(needs.RunConfig.outputs.data).stages_data.stages_to_do, 'Tests_2') }}
uses: ./.github/workflows/reusable_test_stage.yml
with:
stage: Tests_2
data: ${{ needs.RunConfig.outputs.data }}
# stage for jobs that do not prohibit merge
Tests_3:
needs: [RunConfig, Builds_1, Tests_1, Builds_2, Tests_2]
needs: [RunConfig, Builds_1, Tests_1]
if: ${{ !failure() && !cancelled() && contains(fromJson(needs.RunConfig.outputs.data).stages_data.stages_to_do, 'Tests_3') }}
uses: ./.github/workflows/reusable_test_stage.yml
with:
@ -143,29 +143,21 @@ jobs:
data: ${{ needs.RunConfig.outputs.data }}
################################# Reports #################################
# Reports should by run even if Builds_1/2 fail, so put them separately in wf (not in Tests_1/2)
Builds_1_Report:
# Reports should run even if Builds_1/2 fail - run them separately (not in Tests_1/2/3)
Builds_Report:
# run report check for failed builds to indicate the CI error
if: ${{ !cancelled() && needs.StyleCheck.result == 'success' && contains(fromJson(needs.RunConfig.outputs.data).jobs_data.jobs_to_do, 'ClickHouse build check') }}
needs: [RunConfig, StyleCheck, Builds_1]
if: ${{ !cancelled() && needs.RunConfig.result == 'success' && contains(fromJson(needs.RunConfig.outputs.data).jobs_data.jobs_to_do, 'ClickHouse build check') }}
needs: [RunConfig, StyleCheck, Builds_1, Builds_2]
uses: ./.github/workflows/reusable_test.yml
with:
test_name: ClickHouse build check
runner_type: style-checker-aarch64
data: ${{ needs.RunConfig.outputs.data }}
Builds_2_Report:
# run report check for failed builds to indicate the CI error
if: ${{ !cancelled() && needs.StyleCheck.result == 'success' && contains(fromJson(needs.RunConfig.outputs.data).jobs_data.jobs_to_do, 'ClickHouse special build check') }}
needs: [RunConfig, StyleCheck, Builds_2]
uses: ./.github/workflows/reusable_test.yml
with:
test_name: ClickHouse special build check
runner_type: style-checker-aarch64
data: ${{ needs.RunConfig.outputs.data }}
CheckReadyForMerge:
if: ${{ !cancelled() && needs.StyleCheck.result == 'success' }}
needs: [RunConfig, BuildDockers, StyleCheck, FastTest, Builds_1, Builds_2, Builds_1_Report, Builds_2_Report, Tests_1, Tests_2]
# Test_2 or Test_3 must not have jobs required for Mergeable check
needs: [RunConfig, BuildDockers, StyleCheck, FastTest, Builds_1, Builds_2, Builds_Report, Tests_1]
runs-on: [self-hosted, style-checker-aarch64]
steps:
- name: Check out repository code
@ -181,7 +173,7 @@ jobs:
#
FinishCheck:
if: ${{ !cancelled() }}
needs: [RunConfig, BuildDockers, StyleCheck, FastTest, Builds_1, Builds_2, Builds_1_Report, Builds_2_Report, Tests_1, Tests_2, Tests_3]
needs: [RunConfig, BuildDockers, StyleCheck, FastTest, Builds_1, Builds_2, Builds_Report, Tests_1, Tests_2, Tests_3]
runs-on: [self-hosted, style-checker-aarch64]
steps:
- name: Check out repository code
@ -204,8 +196,7 @@ jobs:
concurrency:
group: jepsen
if: ${{ !failure() && !cancelled() && contains(fromJson(needs.RunConfig.outputs.data).jobs_data.jobs_to_do, 'ClickHouse Keeper Jepsen') }}
# jepsen needs binary_release build which is in Builds_2
needs: [RunConfig, Builds_2]
needs: [RunConfig, Builds_1]
uses: ./.github/workflows/reusable_test.yml
with:
test_name: ClickHouse Keeper Jepsen

6
.github/workflows/release_branches.yml vendored
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@ -65,7 +65,7 @@ jobs:
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Compatibility check (amd64)
test_name: Compatibility check (release)
runner_type: style-checker
data: ${{ needs.RunConfig.outputs.data }}
CompatibilityCheckAarch64:
@ -244,7 +244,7 @@ jobs:
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Install packages (amd64)
test_name: Install packages (release)
runner_type: style-checker
data: ${{ needs.RunConfig.outputs.data }}
run_command: |
@ -254,7 +254,7 @@ jobs:
if: ${{ !failure() && !cancelled() }}
uses: ./.github/workflows/reusable_test.yml
with:
test_name: Install packages (arm64)
test_name: Install packages (aarch64)
runner_type: style-checker-aarch64
data: ${{ needs.RunConfig.outputs.data }}
run_command: |

174
CHANGELOG.md
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@ -1,4 +1,5 @@
### Table of Contents
**[ClickHouse release v24.6, 2024-06-27](#246)**<br/>
**[ClickHouse release v24.5, 2024-05-30](#245)**<br/>
**[ClickHouse release v24.4, 2024-04-30](#244)**<br/>
**[ClickHouse release v24.3 LTS, 2024-03-26](#243)**<br/>
@ -8,6 +9,179 @@
# 2024 Changelog
### <a id="246"></a> ClickHouse release 24.6, 2024-06-27
#### Backward Incompatible Change
* Enable asynchronous load of databases and tables by default. See the `async_load_databases` in config.xml. While this change is fully compatible, it can introduce a difference in behavior. When `async_load_databases` is false, as in the previous versions, the server will not accept connections until all tables are loaded. When `async_load_databases` is true, as in the new version, the server can accept connections before all the tables are loaded. If a query is made to a table that is not yet loaded, it will wait for the table's loading, which can take considerable time. It can change the behavior of the server if it is part of a large distributed system under a load balancer. In the first case, the load balancer can get a connection refusal and quickly failover to another server. In the second case, the load balancer can connect to a server that is still loading the tables, and the query will have a higher latency. Moreover, if many queries accumulate in the waiting state, it can lead to a "thundering herd" problem when they start processing simultaneously. This can make a difference only for highly loaded distributed backends. You can set the value of `async_load_databases` to false to avoid this problem. [#57695](https://github.com/ClickHouse/ClickHouse/pull/57695) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Some invalid queries will fail earlier during parsing. Note: disabled the support for inline KQL expressions (the experimental Kusto language) when they are put into a `kql` table function without a string literal, e.g. `kql(garbage | trash)` instead of `kql('garbage | trash')` or `kql($$garbage | trash$$)`. This feature was introduced unintentionally and should not exist. [#61500](https://github.com/ClickHouse/ClickHouse/pull/61500) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Rework parallel processing in `Ordered` mode of storage `S3Queue`. This PR is backward incompatible for Ordered mode if you used settings `s3queue_processing_threads_num` or `s3queue_total_shards_num`. Setting `s3queue_total_shards_num` is deleted, previously it was allowed to use only under `s3queue_allow_experimental_sharded_mode`, which is now deprecated. A new setting is added - `s3queue_buckets`. [#64349](https://github.com/ClickHouse/ClickHouse/pull/64349) ([Kseniia Sumarokova](https://github.com/kssenii)).
* New functions `snowflakeIDToDateTime`, `snowflakeIDToDateTime64`, `dateTimeToSnowflakeID`, and `dateTime64ToSnowflakeID` were added. Unlike the existing functions `snowflakeToDateTime`, `snowflakeToDateTime64`, `dateTimeToSnowflake`, and `dateTime64ToSnowflake`, the new functions are compatible with function `generateSnowflakeID`, i.e. they accept the snowflake IDs generated by `generateSnowflakeID` and produce snowflake IDs of the same type as `generateSnowflakeID` (i.e. `UInt64`). Furthermore, the new functions default to the UNIX epoch (aka. 1970-01-01), just like `generateSnowflakeID`. If necessary, a different epoch, e.g. Twitter's/X's epoch 2010-11-04 aka. 1288834974657 msec since UNIX epoch, can be passed. The old conversion functions are deprecated and will be removed after a transition period: to use them regardless, enable setting `allow_deprecated_snowflake_conversion_functions`. [#64948](https://github.com/ClickHouse/ClickHouse/pull/64948) ([Robert Schulze](https://github.com/rschu1ze)).
#### New Feature
* Introduce statistics of type "number of distinct values". [#59357](https://github.com/ClickHouse/ClickHouse/pull/59357) ([Han Fei](https://github.com/hanfei1991)).
* Add Hilbert Curve encode and decode functions. [#60156](https://github.com/ClickHouse/ClickHouse/pull/60156) ([Artem Mustafin](https://github.com/Artemmm91)).
* Added support for reading LINESTRING geometry in WKT format using function `readWKTLineString`. [#62519](https://github.com/ClickHouse/ClickHouse/pull/62519) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Allow to attach parts from a different disk. [#63087](https://github.com/ClickHouse/ClickHouse/pull/63087) ([Unalian](https://github.com/Unalian)).
* Allow proxy to be bypassed for hosts specified in `no_proxy` env variable and ClickHouse proxy configuration. [#63314](https://github.com/ClickHouse/ClickHouse/pull/63314) ([Arthur Passos](https://github.com/arthurpassos)).
* Added a new table function `loop` to support returning query results in an infinite loop. [#63452](https://github.com/ClickHouse/ClickHouse/pull/63452) ([Sariel](https://github.com/sarielwxm)).
* Added new SQL functions `generateSnowflakeID` for generating Twitter-style Snowflake IDs. [#63577](https://github.com/ClickHouse/ClickHouse/pull/63577) ([Danila Puzov](https://github.com/kazalika)).
* Add the ability to reshuffle rows during insert to optimize for size without violating the order set by `PRIMARY KEY`. It's controlled by the setting `optimize_row_order` (off by default). [#63578](https://github.com/ClickHouse/ClickHouse/pull/63578) ([Igor Markelov](https://github.com/ElderlyPassionFruit)).
* Added `merge_workload` and `mutation_workload` settings to regulate how resources are utilized and shared between merges, mutations and other workloads. [#64061](https://github.com/ClickHouse/ClickHouse/pull/64061) ([Sergei Trifonov](https://github.com/serxa)).
* Add support for comparing IPv4 and IPv6 types using the `=` operator. [#64292](https://github.com/ClickHouse/ClickHouse/pull/64292) ([Francisco J. Jurado Moreno](https://github.com/Beetelbrox)).
* Allow to store named collections in zookeeper. [#64574](https://github.com/ClickHouse/ClickHouse/pull/64574) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Support decimal arguments in binary math functions (pow(), atan2(), max2, min2(), hypot(). [#64582](https://github.com/ClickHouse/ClickHouse/pull/64582) ([Mikhail Gorshkov](https://github.com/mgorshkov)).
* Add support for index analysis over `hilbertEncode`. [#64662](https://github.com/ClickHouse/ClickHouse/pull/64662) ([Artem Mustafin](https://github.com/Artemmm91)).
* Added SQL functions `parseReadableSize` (along with `OrNull` and `OrZero` variants). [#64742](https://github.com/ClickHouse/ClickHouse/pull/64742) ([Francisco J. Jurado Moreno](https://github.com/Beetelbrox)).
* Add server settings `max_table_num_to_throw` and `max_database_num_to_throw` to limit the number of databases or tables on `CREATE` queries. [#64781](https://github.com/ClickHouse/ClickHouse/pull/64781) ([Xu Jia](https://github.com/XuJia0210)).
* Add _time virtual column to file alike storages (s3/file/hdfs/url/azureBlobStorage). [#64947](https://github.com/ClickHouse/ClickHouse/pull/64947) ([Ilya Golshtein](https://github.com/ilejn)).
* Introduced new functions `base64UrlEncode`, `base64UrlDecode` and `tryBase64UrlDecode`. [#64991](https://github.com/ClickHouse/ClickHouse/pull/64991) ([Mikhail Gorshkov](https://github.com/mgorshkov)).
* Add new function `editDistanceUTF8`, which calculates the [edit distance](https://en.wikipedia.org/wiki/Edit_distance) between two UTF8 strings. [#65269](https://github.com/ClickHouse/ClickHouse/pull/65269) ([LiuNeng](https://github.com/liuneng1994)).
#### Performance Improvement
* Add a native parquet reader, which can read parquet binary to ClickHouse Columns directly. It's controlled by the setting `input_format_parquet_use_native_reader` (disabled by default). [#60361](https://github.com/ClickHouse/ClickHouse/pull/60361) ([ZhiHong Zhang](https://github.com/copperybean)).
* Reduce the number of virtual function calls in ColumnNullable::size(). [#60556](https://github.com/ClickHouse/ClickHouse/pull/60556) ([HappenLee](https://github.com/HappenLee)).
* Speedup `splitByRegexp` when the regular expression argument is a single-character. [#62696](https://github.com/ClickHouse/ClickHouse/pull/62696) ([Robert Schulze](https://github.com/rschu1ze)).
* Speed up FixedHashTable by keeping track of the min and max keys used. This allows to reduce the number of cells that need to be verified. [#62746](https://github.com/ClickHouse/ClickHouse/pull/62746) ([Jiebin Sun](https://github.com/jiebinn)).
* Optimize the resolution of in(LowCardinality, ConstantSet). [#64060](https://github.com/ClickHouse/ClickHouse/pull/64060) ([Zhiguo Zhou](https://github.com/ZhiguoZh)).
* Use a thread pool to initialize and destroy hash tables inside `ConcurrentHashJoin`. [#64241](https://github.com/ClickHouse/ClickHouse/pull/64241) ([Nikita Taranov](https://github.com/nickitat)).
* Optimized vertical merges in tables with sparse columns. [#64311](https://github.com/ClickHouse/ClickHouse/pull/64311) ([Anton Popov](https://github.com/CurtizJ)).
* Enabled prefetches of data from remote filesystem during vertical merges. It improves latency of vertical merges in tables with data stored on remote filesystem. [#64314](https://github.com/ClickHouse/ClickHouse/pull/64314) ([Anton Popov](https://github.com/CurtizJ)).
* Reduce redundant calls to `isDefault()` of `ColumnSparse::filter` to improve performance. [#64426](https://github.com/ClickHouse/ClickHouse/pull/64426) ([Jiebin Sun](https://github.com/jiebinn)).
* Speedup `find_super_nodes` and `find_big_family` keeper-client commands by making multiple asynchronous getChildren requests. [#64628](https://github.com/ClickHouse/ClickHouse/pull/64628) ([Alexander Gololobov](https://github.com/davenger)).
* Improve function least/greatest for nullable numberic type arguments. [#64668](https://github.com/ClickHouse/ClickHouse/pull/64668) ([KevinyhZou](https://github.com/KevinyhZou)).
* Allow merging two consequent `FilterSteps` of a query plan. This improves filter-push-down optimization if the filter condition can be pushed down from the parent step. [#64760](https://github.com/ClickHouse/ClickHouse/pull/64760) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Remove bad optimization in vertical final implementation and re-enable vertical final algorithm by default. [#64783](https://github.com/ClickHouse/ClickHouse/pull/64783) ([Duc Canh Le](https://github.com/canhld94)).
* Remove ALIAS nodes from the filter expression. This slightly improves performance for queries with `PREWHERE` (with new analyzer). [#64793](https://github.com/ClickHouse/ClickHouse/pull/64793) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix performance regression in cross join introduced in [#60459](https://github.com/ClickHouse/ClickHouse/issues/60459) (24.5). [#65243](https://github.com/ClickHouse/ClickHouse/pull/65243) ([Nikita Taranov](https://github.com/nickitat)).
#### Improvement
* Support empty tuples. [#55061](https://github.com/ClickHouse/ClickHouse/pull/55061) ([Amos Bird](https://github.com/amosbird)).
* Hot reload storage policy for distributed tables when adding a new disk. [#58285](https://github.com/ClickHouse/ClickHouse/pull/58285) ([Duc Canh Le](https://github.com/canhld94)).
* Avoid possible deadlock during MergeTree index analysis when scheduling threads in a saturated service. [#59427](https://github.com/ClickHouse/ClickHouse/pull/59427) ([Sean Haynes](https://github.com/seandhaynes)).
* Support partial trivial count optimization when the query filter is able to select exact ranges from merge tree tables. [#60463](https://github.com/ClickHouse/ClickHouse/pull/60463) ([Amos Bird](https://github.com/amosbird)).
* Reduce max memory usage of multithreaded `INSERT`s by collecting chunks of multiple threads in a single transform. [#61047](https://github.com/ClickHouse/ClickHouse/pull/61047) ([Yarik Briukhovetskyi](https://github.com/yariks5s)).
* Reduce the memory usage when using Azure object storage by using fixed memory allocation, avoiding the allocation of an extra buffer. [#63160](https://github.com/ClickHouse/ClickHouse/pull/63160) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Several minor corner case fixes to proxy support & tunneling. [#63427](https://github.com/ClickHouse/ClickHouse/pull/63427) ([Arthur Passos](https://github.com/arthurpassos)).
* Add `http_response_headers` setting to support custom response headers in custom HTTP handlers. [#63562](https://github.com/ClickHouse/ClickHouse/pull/63562) ([Grigorii](https://github.com/GSokol)).
* Improve io_uring resubmits visibility. Rename profile event `IOUringSQEsResubmits` -> `IOUringSQEsResubmitsAsync` and add a new one `IOUringSQEsResubmitsSync`. [#63699](https://github.com/ClickHouse/ClickHouse/pull/63699) ([Tomer Shafir](https://github.com/tomershafir)).
* Introduce assertions to verify all functions are called with columns of the right size. [#63723](https://github.com/ClickHouse/ClickHouse/pull/63723) ([Raúl Marín](https://github.com/Algunenano)).
* `SHOW CREATE TABLE` executed on top of system tables will now show the super handy comment unique for each table which will explain why this table is needed. [#63788](https://github.com/ClickHouse/ClickHouse/pull/63788) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Added setting `metadata_storage_type` to keep free space on metadata storage disk. [#64128](https://github.com/ClickHouse/ClickHouse/pull/64128) ([MikhailBurdukov](https://github.com/MikhailBurdukov)).
* Add metrics to track the number of directories created and removed by the plain_rewritable metadata storage, and the number of entries in the local-to-remote in-memory map. [#64175](https://github.com/ClickHouse/ClickHouse/pull/64175) ([Julia Kartseva](https://github.com/jkartseva)).
* The query cache now considers identical queries with different settings as different. This increases robustness in cases where different settings (e.g. `limit` or `additional_table_filters`) would affect the query result. [#64205](https://github.com/ClickHouse/ClickHouse/pull/64205) ([Robert Schulze](https://github.com/rschu1ze)).
* Better Exception Message in Delete Table with Projection, users can understand the error and the steps should be taken. [#64212](https://github.com/ClickHouse/ClickHouse/pull/64212) ([jsc0218](https://github.com/jsc0218)).
* Support the non standard error code `QpsLimitExceeded` in object storage as a retryable error. [#64225](https://github.com/ClickHouse/ClickHouse/pull/64225) ([Sema Checherinda](https://github.com/CheSema)).
* Forbid converting a MergeTree table to replicated if the zookeeper path for this table already exists. [#64244](https://github.com/ClickHouse/ClickHouse/pull/64244) ([Kirill](https://github.com/kirillgarbar)).
* If "replica group" is configured for a `Replicated` database, automatically create a cluster that includes replicas from all groups. [#64312](https://github.com/ClickHouse/ClickHouse/pull/64312) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Added settings to disable materialization of skip indexes and statistics on inserts (`materialize_skip_indexes_on_insert` and `materialize_statistics_on_insert`). [#64391](https://github.com/ClickHouse/ClickHouse/pull/64391) ([Anton Popov](https://github.com/CurtizJ)).
* Use the allocated memory size to calculate the row group size and reduce the peak memory of the parquet writer in single-threaded mode. [#64424](https://github.com/ClickHouse/ClickHouse/pull/64424) ([LiuNeng](https://github.com/liuneng1994)).
* Added new configuration input_format_parquet_prefer_block_bytes to control the average output block bytes, and modified the default value of input_format_parquet_max_block_size to 65409. [#64427](https://github.com/ClickHouse/ClickHouse/pull/64427) ([LiuNeng](https://github.com/liuneng1994)).
* Always start Keeper with sufficient amount of threads in global thread pool. [#64444](https://github.com/ClickHouse/ClickHouse/pull/64444) ([Duc Canh Le](https://github.com/canhld94)).
* Settings from user config doesn't affect merges and mutations for MergeTree on top of object storage. [#64456](https://github.com/ClickHouse/ClickHouse/pull/64456) ([alesapin](https://github.com/alesapin)).
* Setting `replace_long_file_name_to_hash` is enabled by default for `MergeTree` tables. [#64457](https://github.com/ClickHouse/ClickHouse/pull/64457) ([Anton Popov](https://github.com/CurtizJ)).
* Improve the iterator of sparse column to reduce call of size(). [#64497](https://github.com/ClickHouse/ClickHouse/pull/64497) ([Jiebin Sun](https://github.com/jiebinn)).
* Update condition to use copy for azure blob storage. [#64518](https://github.com/ClickHouse/ClickHouse/pull/64518) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Support the non standard error code `TotalQpsLimitExceeded` in object storage as a retryable error. [#64520](https://github.com/ClickHouse/ClickHouse/pull/64520) ([Sema Checherinda](https://github.com/CheSema)).
* Optimized memory usage of vertical merges for tables with high number of skip indexes. [#64580](https://github.com/ClickHouse/ClickHouse/pull/64580) ([Anton Popov](https://github.com/CurtizJ)).
* Introduced two additional columns in the `system.query_log`: `used_privileges` and `missing_privileges`. `used_privileges` is populated with the privileges that were checked during query execution, and `missing_privileges` contains required privileges that are missing. [#64597](https://github.com/ClickHouse/ClickHouse/pull/64597) ([Alexey Katsman](https://github.com/alexkats)).
* Add settings `parallel_replicas_custom_key_range_lower` and `parallel_replicas_custom_key_range_upper` to control how parallel replicas with dynamic shards parallelizes queries when using a range filter. [#64604](https://github.com/ClickHouse/ClickHouse/pull/64604) ([josh-hildred](https://github.com/josh-hildred)).
* Updated Advanced Dashboard for both open-source and ClickHouse Cloud versions to include a chart for 'Maximum concurrent network connections'. [#64610](https://github.com/ClickHouse/ClickHouse/pull/64610) ([Thom O'Connor](https://github.com/thomoco)).
* The second argument (scale) of functions `round()`, `roundBankers()`, `floor()`, `ceil()` and `trunc()` can now be non-const. [#64798](https://github.com/ClickHouse/ClickHouse/pull/64798) ([Mikhail Gorshkov](https://github.com/mgorshkov)).
* Improve progress report on zeros_mt and generateRandom. [#64804](https://github.com/ClickHouse/ClickHouse/pull/64804) ([Raúl Marín](https://github.com/Algunenano)).
* Add an asynchronous metric jemalloc.profile.active to show whether sampling is currently active. This is an activation mechanism in addition to prof.active; both must be active for the calling thread to sample. [#64842](https://github.com/ClickHouse/ClickHouse/pull/64842) ([Unalian](https://github.com/Unalian)).
* Support statistics with ReplicatedMergeTree. [#64934](https://github.com/ClickHouse/ClickHouse/pull/64934) ([Han Fei](https://github.com/hanfei1991)).
* Remove mark of `allow_experimental_join_condition` as important. This mark may have prevented distributed queries in a mixed versions cluster from being executed successfully. [#65008](https://github.com/ClickHouse/ClickHouse/pull/65008) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Added server Asynchronous metrics `DiskGetObjectThrottler*` and `DiskGetObjectThrottler*` reflecting request per second rate limit defined with `s3_max_get_rps` and `s3_max_put_rps` disk settings and currently available number of requests that could be sent without hitting throttling limit on the disk. Metrics are defined for every disk that has a configured limit. [#65050](https://github.com/ClickHouse/ClickHouse/pull/65050) ([Sergei Trifonov](https://github.com/serxa)).
* Added a setting `output_format_pretty_display_footer_column_names` which when enabled displays column names at the end of the table for long tables (50 rows by default), with the threshold value for minimum number of rows controlled by `output_format_pretty_display_footer_column_names_min_rows`. [#65144](https://github.com/ClickHouse/ClickHouse/pull/65144) ([Shaun Struwig](https://github.com/Blargian)).
* Returned back the behaviour of how ClickHouse works and interprets Tuples in CSV format. This change effectively reverts https://github.com/ClickHouse/ClickHouse/pull/60994 and makes it available only under a few settings: `output_format_csv_serialize_tuple_into_separate_columns`, `input_format_csv_deserialize_separate_columns_into_tuple` and `input_format_csv_try_infer_strings_from_quoted_tuples`. [#65170](https://github.com/ClickHouse/ClickHouse/pull/65170) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Initialize global trace collector for Poco::ThreadPool (needed for keeper, etc). [#65239](https://github.com/ClickHouse/ClickHouse/pull/65239) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Add validation when creating a user with bcrypt_hash. [#65242](https://github.com/ClickHouse/ClickHouse/pull/65242) ([Raúl Marín](https://github.com/Algunenano)).
* Unite s3/hdfs/azure storage implementations into a single class working with IObjectStorage. Same for *Cluster, data lakes and Queue storages. [#59767](https://github.com/ClickHouse/ClickHouse/pull/59767) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Refactor data part writer to remove dependencies on MergeTreeData and DataPart. [#63620](https://github.com/ClickHouse/ClickHouse/pull/63620) ([Alexander Gololobov](https://github.com/davenger)).
* Add profile events for number of rows read during/after prewhere. [#64198](https://github.com/ClickHouse/ClickHouse/pull/64198) ([Nikita Taranov](https://github.com/nickitat)).
* Print query in explain plan with parallel replicas. [#64298](https://github.com/ClickHouse/ClickHouse/pull/64298) ([vdimir](https://github.com/vdimir)).
* Rename `allow_deprecated_functions` to `allow_deprecated_error_prone_window_functions`. [#64358](https://github.com/ClickHouse/ClickHouse/pull/64358) ([Raúl Marín](https://github.com/Algunenano)).
* Respect `max_read_buffer_size` setting for file descriptors as well in file() table function. [#64532](https://github.com/ClickHouse/ClickHouse/pull/64532) ([Azat Khuzhin](https://github.com/azat)).
* Disable transactions for unsupported storages even for materialized views. [#64918](https://github.com/ClickHouse/ClickHouse/pull/64918) ([alesapin](https://github.com/alesapin)).
* Refactor `KeyCondition` and key analysis to improve PartitionPruner and trivial count optimization. This is separated from [#60463](https://github.com/ClickHouse/ClickHouse/issues/60463) . [#61459](https://github.com/ClickHouse/ClickHouse/pull/61459) ([Amos Bird](https://github.com/amosbird)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Fix a permission error where a user in a specific situation can escalate their privileges on the default database without necessary grants. [#64769](https://github.com/ClickHouse/ClickHouse/pull/64769) ([pufit](https://github.com/pufit)).
* Fix crash with UniqInjectiveFunctionsEliminationPass and uniqCombined. [#65188](https://github.com/ClickHouse/ClickHouse/pull/65188) ([Raúl Marín](https://github.com/Algunenano)).
* Fix a bug in ClickHouse Keeper that causes digest mismatch during closing session. [#65198](https://github.com/ClickHouse/ClickHouse/pull/65198) ([Aleksei Filatov](https://github.com/aalexfvk)).
* Forbid `QUALIFY` clause in the old analyzer. The old analyzer ignored `QUALIFY`, so it could lead to unexpected data removal in mutations. [#65356](https://github.com/ClickHouse/ClickHouse/pull/65356) ([Dmitry Novik](https://github.com/novikd)).
* Use correct memory alignment for Distinct combinator. Previously, crash could happen because of invalid memory allocation when the combinator was used. [#65379](https://github.com/ClickHouse/ClickHouse/pull/65379) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix crash with `DISTINCT` and window functions. [#64767](https://github.com/ClickHouse/ClickHouse/pull/64767) ([Igor Nikonov](https://github.com/devcrafter)).
* Fixed 'set' skip index not working with IN and indexHint(). [#62083](https://github.com/ClickHouse/ClickHouse/pull/62083) ([Michael Kolupaev](https://github.com/al13n321)).
* Support executing function during assignment of parameterized view value. [#63502](https://github.com/ClickHouse/ClickHouse/pull/63502) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Fixed parquet memory tracking. [#63584](https://github.com/ClickHouse/ClickHouse/pull/63584) ([Michael Kolupaev](https://github.com/al13n321)).
* Fixed reading of columns of type `Tuple(Map(LowCardinality(String), String), ...)`. [#63956](https://github.com/ClickHouse/ClickHouse/pull/63956) ([Anton Popov](https://github.com/CurtizJ)).
* Fix an `Cyclic aliases` error for cyclic aliases of different type (expression and function). [#63993](https://github.com/ClickHouse/ClickHouse/pull/63993) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* This fix will use a proper redefined context with the correct definer for each individual view in the query pipeline. [#64079](https://github.com/ClickHouse/ClickHouse/pull/64079) ([pufit](https://github.com/pufit)).
* Fix analyzer: "Not found column" error is fixed when using INTERPOLATE. [#64096](https://github.com/ClickHouse/ClickHouse/pull/64096) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
* Fix creating backups to S3 buckets with different credentials from the disk containing the file. [#64153](https://github.com/ClickHouse/ClickHouse/pull/64153) ([Antonio Andelic](https://github.com/antonio2368)).
* The query cache now considers two identical queries against different databases as different. The previous behavior could be used to bypass missing privileges to read from a table. [#64199](https://github.com/ClickHouse/ClickHouse/pull/64199) ([Robert Schulze](https://github.com/rschu1ze)).
* Fix possible abort on uncaught exception in ~WriteBufferFromFileDescriptor in StatusFile. [#64206](https://github.com/ClickHouse/ClickHouse/pull/64206) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix `duplicate alias` error for distributed queries with `ARRAY JOIN`. [#64226](https://github.com/ClickHouse/ClickHouse/pull/64226) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix unexpected accurateCast from string to integer. [#64255](https://github.com/ClickHouse/ClickHouse/pull/64255) ([wudidapaopao](https://github.com/wudidapaopao)).
* Fixed CNF simplification, in case any OR group contains mutually exclusive atoms. [#64256](https://github.com/ClickHouse/ClickHouse/pull/64256) ([Eduard Karacharov](https://github.com/korowa)).
* Fix Query Tree size validation. [#64377](https://github.com/ClickHouse/ClickHouse/pull/64377) ([Dmitry Novik](https://github.com/novikd)).
* Fix `Logical error: Bad cast` for `Buffer` table with `PREWHERE`. [#64388](https://github.com/ClickHouse/ClickHouse/pull/64388) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Prevent recursive logging in `blob_storage_log` when it's stored on object storage. [#64393](https://github.com/ClickHouse/ClickHouse/pull/64393) ([vdimir](https://github.com/vdimir)).
* Fixed `CREATE TABLE AS` queries for tables with default expressions. [#64455](https://github.com/ClickHouse/ClickHouse/pull/64455) ([Anton Popov](https://github.com/CurtizJ)).
* Fixed `optimize_read_in_order` behaviour for ORDER BY ... NULLS FIRST / LAST on tables with nullable keys. [#64483](https://github.com/ClickHouse/ClickHouse/pull/64483) ([Eduard Karacharov](https://github.com/korowa)).
* Fix the `Expression nodes list expected 1 projection names` and `Unknown expression or identifier` errors for queries with aliases to `GLOBAL IN.`. [#64517](https://github.com/ClickHouse/ClickHouse/pull/64517) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix an error `Cannot find column` in distributed queries with constant CTE in the `GROUP BY` key. [#64519](https://github.com/ClickHouse/ClickHouse/pull/64519) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed ORC statistics calculation, when writing, for unsigned types on all platforms and Int8 on ARM. [#64563](https://github.com/ClickHouse/ClickHouse/pull/64563) ([Michael Kolupaev](https://github.com/al13n321)).
* Fix the crash loop when restoring from backup is blocked by creating an MV with a definer that hasn't been restored yet. [#64595](https://github.com/ClickHouse/ClickHouse/pull/64595) ([pufit](https://github.com/pufit)).
* Fix the output of function `formatDateTimeInJodaSyntax` when a formatter generates an uneven number of characters and the last character is `0`. For example, `SELECT formatDateTimeInJodaSyntax(toDate('2012-05-29'), 'D')` now correctly returns `150` instead of previously `15`. [#64614](https://github.com/ClickHouse/ClickHouse/pull/64614) ([LiuNeng](https://github.com/liuneng1994)).
* Do not rewrite aggregation if `-If` combinator is already used. [#64638](https://github.com/ClickHouse/ClickHouse/pull/64638) ([Dmitry Novik](https://github.com/novikd)).
* Fix type inference for float (in case of small buffer, i.e. `--max_read_buffer_size 1`). [#64641](https://github.com/ClickHouse/ClickHouse/pull/64641) ([Azat Khuzhin](https://github.com/azat)).
* Fix bug which could lead to non-working TTLs with expressions. [#64694](https://github.com/ClickHouse/ClickHouse/pull/64694) ([alesapin](https://github.com/alesapin)).
* Fix removing the `WHERE` and `PREWHERE` expressions, which are always true (for the new analyzer). [#64695](https://github.com/ClickHouse/ClickHouse/pull/64695) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed excessive part elimination by token-based text indexes (`ngrambf` , `full_text`) when filtering by result of `startsWith`, `endsWith`, `match`, `multiSearchAny`. [#64720](https://github.com/ClickHouse/ClickHouse/pull/64720) ([Eduard Karacharov](https://github.com/korowa)).
* Fixes incorrect behaviour of ANSI CSI escaping in the `UTF8::computeWidth` function. [#64756](https://github.com/ClickHouse/ClickHouse/pull/64756) ([Shaun Struwig](https://github.com/Blargian)).
* Fix a case of incorrect removal of `ORDER BY` / `LIMIT BY` across subqueries. [#64766](https://github.com/ClickHouse/ClickHouse/pull/64766) ([Raúl Marín](https://github.com/Algunenano)).
* Fix (experimental) unequal join with subqueries for sets which are in the mixed join conditions. [#64775](https://github.com/ClickHouse/ClickHouse/pull/64775) ([lgbo](https://github.com/lgbo-ustc)).
* Fix crash in a local cache over `plain_rewritable` disk. [#64778](https://github.com/ClickHouse/ClickHouse/pull/64778) ([Julia Kartseva](https://github.com/jkartseva)).
* Keeper fix: return correct value for `zk_latest_snapshot_size` in `mntr` command. [#64784](https://github.com/ClickHouse/ClickHouse/pull/64784) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix `Cannot find column` in distributed query with `ARRAY JOIN` by `Nested` column. Fixes [#64755](https://github.com/ClickHouse/ClickHouse/issues/64755). [#64801](https://github.com/ClickHouse/ClickHouse/pull/64801) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix memory leak in slru cache policy. [#64803](https://github.com/ClickHouse/ClickHouse/pull/64803) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fixed possible incorrect memory tracking in several kinds of queries: queries that read any data from S3, queries via http protocol, asynchronous inserts. [#64844](https://github.com/ClickHouse/ClickHouse/pull/64844) ([Anton Popov](https://github.com/CurtizJ)).
* Fix the `Block structure mismatch` error for queries reading with `PREWHERE` from the materialized view when the materialized view has columns of different types than the source table. Fixes [#64611](https://github.com/ClickHouse/ClickHouse/issues/64611). [#64855](https://github.com/ClickHouse/ClickHouse/pull/64855) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix rare crash when table has TTL with subquery + database replicated + parallel replicas + analyzer. It's really rare, but please don't use TTLs with subqueries. [#64858](https://github.com/ClickHouse/ClickHouse/pull/64858) ([alesapin](https://github.com/alesapin)).
* Fix duplicating `Delete` events in `blob_storage_log` in case of large batch to delete. [#64924](https://github.com/ClickHouse/ClickHouse/pull/64924) ([vdimir](https://github.com/vdimir)).
* Fixed `Session moved to another server` error from [Zoo]Keeper that might happen after server startup when the config has includes from [Zoo]Keeper. [#64986](https://github.com/ClickHouse/ClickHouse/pull/64986) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Fix `ALTER MODIFY COMMENT` query that was broken for parameterized VIEWs in https://github.com/ClickHouse/ClickHouse/pull/54211. [#65031](https://github.com/ClickHouse/ClickHouse/pull/65031) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fix `host_id` in DatabaseReplicated when `cluster_secure_connection` parameter is enabled. Previously all the connections within the cluster created by DatabaseReplicated were not secure, even if the parameter was enabled. [#65054](https://github.com/ClickHouse/ClickHouse/pull/65054) ([Nikolay Degterinsky](https://github.com/evillique)).
* Fixing the `Not-ready Set` error after the `PREWHERE` optimization for StorageMerge. [#65057](https://github.com/ClickHouse/ClickHouse/pull/65057) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Avoid writing to finalized buffer in File-like storages. [#65063](https://github.com/ClickHouse/ClickHouse/pull/65063) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix possible infinite query duration in case of cyclic aliases. Fixes [#64849](https://github.com/ClickHouse/ClickHouse/issues/64849). [#65081](https://github.com/ClickHouse/ClickHouse/pull/65081) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix the `Unknown expression identifier` error for remote queries with `INTERPOLATE (alias)` (new analyzer). Fixes [#64636](https://github.com/ClickHouse/ClickHouse/issues/64636). [#65090](https://github.com/ClickHouse/ClickHouse/pull/65090) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix pushing arithmetic operations out of aggregation. In the new analyzer, optimization was applied only once. [#65104](https://github.com/ClickHouse/ClickHouse/pull/65104) ([Dmitry Novik](https://github.com/novikd)).
* Fix aggregate function name rewriting in the new analyzer. [#65110](https://github.com/ClickHouse/ClickHouse/pull/65110) ([Dmitry Novik](https://github.com/novikd)).
* Respond with 5xx instead of 200 OK in case of receive timeout while reading (parts of) the request body from the client socket. [#65118](https://github.com/ClickHouse/ClickHouse/pull/65118) ([Julian Maicher](https://github.com/jmaicher)).
* Fix possible crash for hedged requests. [#65206](https://github.com/ClickHouse/ClickHouse/pull/65206) ([Azat Khuzhin](https://github.com/azat)).
* Fix the bug in Hashed and Hashed_Array dictionary short circuit evaluation, which may read uninitialized number, leading to various errors. [#65256](https://github.com/ClickHouse/ClickHouse/pull/65256) ([jsc0218](https://github.com/jsc0218)).
* This PR ensures that the type of the constant(IN operator's second parameter) is always visible during the IN operator's type conversion process. Otherwise, losing type information may cause some conversions to fail, such as the conversion from DateTime to Date. This fixes ([#64487](https://github.com/ClickHouse/ClickHouse/issues/64487)). [#65315](https://github.com/ClickHouse/ClickHouse/pull/65315) ([pn](https://github.com/chloro-pn)).
#### Build/Testing/Packaging Improvement
* Make `network` service be required when using the rc init script to start the ClickHouse server daemon. [#60650](https://github.com/ClickHouse/ClickHouse/pull/60650) ([Chun-Sheng, Li](https://github.com/peter279k)).
* Fix typo in test_hdfsCluster_unset_skip_unavailable_shards. The test writes data to unskip_unavailable_shards, but uses skip_unavailable_shards from the previous test. [#64243](https://github.com/ClickHouse/ClickHouse/pull/64243) ([Mikhail Artemenko](https://github.com/Michicosun)).
* Reduce the size of some slow tests. [#64387](https://github.com/ClickHouse/ClickHouse/pull/64387) ([Raúl Marín](https://github.com/Algunenano)).
* Reduce the size of some slow tests. [#64452](https://github.com/ClickHouse/ClickHouse/pull/64452) ([Raúl Marín](https://github.com/Algunenano)).
* Fix test_lost_part_other_replica. [#64512](https://github.com/ClickHouse/ClickHouse/pull/64512) ([Raúl Marín](https://github.com/Algunenano)).
* Add tests for experimental unequal joins and randomize new settings in clickhouse-test. [#64535](https://github.com/ClickHouse/ClickHouse/pull/64535) ([Nikita Fomichev](https://github.com/fm4v)).
* Upgrade tests: Update config and work with release candidates. [#64542](https://github.com/ClickHouse/ClickHouse/pull/64542) ([Raúl Marín](https://github.com/Algunenano)).
* Add support for LLVM XRay. [#64592](https://github.com/ClickHouse/ClickHouse/pull/64592) ([Tomer Shafir](https://github.com/tomershafir)).
* Speed up 02995_forget_partition. [#64761](https://github.com/ClickHouse/ClickHouse/pull/64761) ([Raúl Marín](https://github.com/Algunenano)).
* Fix 02790_async_queries_in_query_log. [#64764](https://github.com/ClickHouse/ClickHouse/pull/64764) ([Raúl Marín](https://github.com/Algunenano)).
* Support LLVM XRay on Linux amd64 only. [#64837](https://github.com/ClickHouse/ClickHouse/pull/64837) ([Tomer Shafir](https://github.com/tomershafir)).
* Get rid of custom code in `tests/ci/download_release_packages.py` and `tests/ci/get_previous_release_tag.py` to avoid issues after the https://github.com/ClickHouse/ClickHouse/pull/64759 is merged. [#64848](https://github.com/ClickHouse/ClickHouse/pull/64848) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Decrease the `unit-test` image a few times. [#65102](https://github.com/ClickHouse/ClickHouse/pull/65102) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Replay ZooKeeper logs using keeper-bench. [#62481](https://github.com/ClickHouse/ClickHouse/pull/62481) ([Antonio Andelic](https://github.com/antonio2368)).
* Re-enable OpenSSL session caching. [#65111](https://github.com/ClickHouse/ClickHouse/pull/65111) ([Robert Schulze](https://github.com/rschu1ze)).
### <a id="245"></a> ClickHouse release 24.5, 2024-05-30
#### Backward Incompatible Change

10
README.md
View File

@ -34,20 +34,18 @@ 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.
* [v24.5 Community Call](https://clickhouse.com/company/events/v24-5-community-release-call) - May 30
* [v24.6 Community Call](https://clickhouse.com/company/events/v24-6-community-release-call) - Jul 2
## 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 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
* [AWS Summit in DC](https://clickhouse.com/company/events/2024-06-aws-summit-dc) - Jun 26
* [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 Cloud - Live Update Call](https://clickhouse.com/company/events/202407-cloud-update-live) - Jul 9
* [ClickHouse Meetup @ Ramp - New York City](https://www.meetup.com/clickhouse-new-york-user-group/events/300595845/) - Jul 9
* [AWS Summit in New York](https://clickhouse.com/company/events/2024-07-awssummit-nyc) - Jul 10
* [ClickHouse Meetup @ Klaviyo - Boston](https://www.meetup.com/clickhouse-boston-user-group/events/300907870) - Jul 11
## Recent Recordings

21
base/poco/Crypto/src/OpenSSLInitializer.cpp
View File

@ -23,9 +23,6 @@
#include <openssl/conf.h>
#endif
#if __has_feature(address_sanitizer)
#include <sanitizer/lsan_interface.h>
#endif
using Poco::RandomInputStream;
using Poco::Thread;
@ -70,18 +67,12 @@ void OpenSSLInitializer::initialize()
SSL_library_init();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
char seed[SEEDSIZE];
RandomInputStream rnd;
rnd.read(seed, sizeof(seed));
{
# if __has_feature(address_sanitizer)
/// Leak sanitizer (part of address sanitizer) thinks that a few bytes of memory in OpenSSL are allocated during but never released.
__lsan::ScopedDisabler lsan_disabler;
#endif
RAND_seed(seed, SEEDSIZE);
}
RAND_seed(seed, SEEDSIZE);
int nMutexes = CRYPTO_num_locks();
_mutexes = new Poco::FastMutex[nMutexes];
CRYPTO_set_locking_callback(&OpenSSLInitializer::lock);
@ -89,8 +80,8 @@ void OpenSSLInitializer::initialize()
// https://sourceforge.net/p/poco/bugs/110/
//
// From http://www.openssl.org/docs/crypto/threads.html :
// "If the application does not register such a callback using CRYPTO_THREADID_set_callback(),
// then a default implementation is used - on Windows and BeOS this uses the system's
// "If the application does not register such a callback using CRYPTO_THREADID_set_callback(),
// then a default implementation is used - on Windows and BeOS this uses the system's
// default thread identifying APIs"
CRYPTO_set_id_callback(&OpenSSLInitializer::id);
CRYPTO_set_dynlock_create_callback(&OpenSSLInitializer::dynlockCreate);
@ -109,7 +100,7 @@ void OpenSSLInitializer::uninitialize()
CRYPTO_set_locking_callback(0);
CRYPTO_set_id_callback(0);
delete [] _mutexes;
CONF_modules_free();
}
}

1
base/poco/Foundation/CMakeLists.txt
View File

@ -213,6 +213,7 @@ target_compile_definitions (_poco_foundation
)
target_include_directories (_poco_foundation SYSTEM PUBLIC "include")
target_link_libraries (_poco_foundation PRIVATE clickhouse_common_io)
target_link_libraries (_poco_foundation
PRIVATE

20
base/poco/Foundation/include/Poco/ThreadPool.h
View File

@ -48,7 +48,13 @@ class Foundation_API ThreadPool
/// from the pool.
{
public:
ThreadPool(int minCapacity = 2, int maxCapacity = 16, int idleTime = 60, int stackSize = POCO_THREAD_STACK_SIZE);
explicit ThreadPool(
int minCapacity = 2,
int maxCapacity = 16,
int idleTime = 60,
int stackSize = POCO_THREAD_STACK_SIZE,
size_t global_profiler_real_time_period_ns_ = 0,
size_t global_profiler_cpu_time_period_ns_ = 0);
/// Creates a thread pool with minCapacity threads.
/// If required, up to maxCapacity threads are created
/// a NoThreadAvailableException exception is thrown.
@ -56,8 +62,14 @@ public:
/// and more than minCapacity threads are running, the thread
/// is killed. Threads are created with given stack size.
ThreadPool(
const std::string & name, int minCapacity = 2, int maxCapacity = 16, int idleTime = 60, int stackSize = POCO_THREAD_STACK_SIZE);
explicit ThreadPool(
const std::string & name,
int minCapacity = 2,
int maxCapacity = 16,
int idleTime = 60,
int stackSize = POCO_THREAD_STACK_SIZE,
size_t global_profiler_real_time_period_ns_ = 0,
size_t global_profiler_cpu_time_period_ns_ = 0);
/// Creates a thread pool with the given name and minCapacity threads.
/// If required, up to maxCapacity threads are created
/// a NoThreadAvailableException exception is thrown.
@ -171,6 +183,8 @@ private:
int _serial;
int _age;
int _stackSize;
size_t _globalProfilerRealTimePeriodNs;
size_t _globalProfilerCPUTimePeriodNs;
ThreadVec _threads;
mutable FastMutex _mutex;
};

75
base/poco/Foundation/src/ThreadPool.cpp
View File

@ -20,6 +20,7 @@
#include "Poco/ErrorHandler.h"
#include <sstream>
#include <ctime>
#include <Common/ThreadPool.h>
namespace Poco {
@ -28,7 +29,11 @@ namespace Poco {
class PooledThread: public Runnable
{
public:
PooledThread(const std::string& name, int stackSize = POCO_THREAD_STACK_SIZE);
explicit PooledThread(
const std::string& name,
int stackSize = POCO_THREAD_STACK_SIZE,
size_t globalProfilerRealTimePeriodNs_ = 0,
size_t globalProfilerCPUTimePeriodNs_ = 0);
~PooledThread();
void start();
@ -51,16 +56,24 @@ private:
Event _targetCompleted;
Event _started;
FastMutex _mutex;
size_t _globalProfilerRealTimePeriodNs;
size_t _globalProfilerCPUTimePeriodNs;
};
PooledThread::PooledThread(const std::string& name, int stackSize):
_idle(true),
_idleTime(0),
_pTarget(0),
_name(name),
PooledThread::PooledThread(
const std::string& name,
int stackSize,
size_t globalProfilerRealTimePeriodNs_,
size_t globalProfilerCPUTimePeriodNs_) :
_idle(true),
_idleTime(0),
_pTarget(0),
_name(name),
_thread(name),
_targetCompleted(false)
_targetCompleted(false),
_globalProfilerRealTimePeriodNs(globalProfilerRealTimePeriodNs_),
_globalProfilerCPUTimePeriodNs(globalProfilerCPUTimePeriodNs_)
{
poco_assert_dbg (stackSize >= 0);
_thread.setStackSize(stackSize);
@ -83,7 +96,7 @@ void PooledThread::start()
void PooledThread::start(Thread::Priority priority, Runnable& target)
{
FastMutex::ScopedLock lock(_mutex);
poco_assert (_pTarget == 0);
_pTarget = &target;
@ -109,7 +122,7 @@ void PooledThread::start(Thread::Priority priority, Runnable& target, const std:
}
_thread.setName(fullName);
_thread.setPriority(priority);
poco_assert (_pTarget == 0);
_pTarget = &target;
@ -145,7 +158,7 @@ void PooledThread::join()
void PooledThread::activate()
{
FastMutex::ScopedLock lock(_mutex);
poco_assert (_idle);
_idle = false;
_targetCompleted.reset();
@ -155,7 +168,7 @@ void PooledThread::activate()
void PooledThread::release()
{
const long JOIN_TIMEOUT = 10000;
_mutex.lock();
_pTarget = 0;
_mutex.unlock();
@ -174,6 +187,10 @@ void PooledThread::release()
void PooledThread::run()
{
DB::ThreadStatus thread_status;
if (unlikely(_globalProfilerRealTimePeriodNs != 0 || _globalProfilerCPUTimePeriodNs != 0))
thread_status.initGlobalProfiler(_globalProfilerRealTimePeriodNs, _globalProfilerCPUTimePeriodNs);
_started.set();
for (;;)
{
@ -220,13 +237,17 @@ void PooledThread::run()
ThreadPool::ThreadPool(int minCapacity,
int maxCapacity,
int idleTime,
int stackSize):
_minCapacity(minCapacity),
_maxCapacity(maxCapacity),
int stackSize,
size_t globalProfilerRealTimePeriodNs_,
size_t globalProfilerCPUTimePeriodNs_) :
_minCapacity(minCapacity),
_maxCapacity(maxCapacity),
_idleTime(idleTime),
_serial(0),
_age(0),
_stackSize(stackSize)
_stackSize(stackSize),
_globalProfilerRealTimePeriodNs(globalProfilerRealTimePeriodNs_),
_globalProfilerCPUTimePeriodNs(globalProfilerCPUTimePeriodNs_)
{
poco_assert (minCapacity >= 1 && maxCapacity >= minCapacity && idleTime > 0);
@ -243,14 +264,18 @@ ThreadPool::ThreadPool(const std::string& name,
int minCapacity,
int maxCapacity,
int idleTime,
int stackSize):
int stackSize,
size_t globalProfilerRealTimePeriodNs_,
size_t globalProfilerCPUTimePeriodNs_) :
_name(name),
_minCapacity(minCapacity),
_maxCapacity(maxCapacity),
_minCapacity(minCapacity),
_maxCapacity(maxCapacity),
_idleTime(idleTime),
_serial(0),
_age(0),
_stackSize(stackSize)
_stackSize(stackSize),
_globalProfilerRealTimePeriodNs(globalProfilerRealTimePeriodNs_),
_globalProfilerCPUTimePeriodNs(globalProfilerCPUTimePeriodNs_)
{
poco_assert (minCapacity >= 1 && maxCapacity >= minCapacity && idleTime > 0);
@ -393,15 +418,15 @@ void ThreadPool::housekeep()
ThreadVec activeThreads;
idleThreads.reserve(_threads.size());
activeThreads.reserve(_threads.size());
for (ThreadVec::iterator it = _threads.begin(); it != _threads.end(); ++it)
{
if ((*it)->idle())
{
if ((*it)->idleTime() < _idleTime)
idleThreads.push_back(*it);
else
expiredThreads.push_back(*it);
else
expiredThreads.push_back(*it);
}
else activeThreads.push_back(*it);
}
@ -463,7 +488,7 @@ PooledThread* ThreadPool::createThread()
{
std::ostringstream name;
name << _name << "[#" << ++_serial << "]";
return new PooledThread(name.str(), _stackSize);
return new PooledThread(name.str(), _stackSize, _globalProfilerRealTimePeriodNs, _globalProfilerCPUTimePeriodNs);
}
@ -481,7 +506,7 @@ public:
ThreadPool* pool()
{
FastMutex::ScopedLock lock(_mutex);
if (!_pPool)
{
_pPool = new ThreadPool("default");
@ -490,7 +515,7 @@ public:
}
return _pPool;
}
private:
ThreadPool* _pPool;
FastMutex _mutex;

76
base/poco/NetSSL_OpenSSL/include/Poco/Net/SSLManager.h
View File

@ -17,6 +17,7 @@
#ifndef NetSSL_SSLManager_INCLUDED
#define NetSSL_SSLManager_INCLUDED
#include <unordered_map>
#include <openssl/ssl.h>
#include "Poco/BasicEvent.h"
@ -219,6 +220,13 @@ namespace Net
/// Unless initializeClient() has been called, the first call to this method initializes the default Context
/// from the application configuration.
Context::Ptr getCustomServerContext(const std::string & name);
/// Return custom Context used by the server.
Context::Ptr setCustomServerContext(const std::string & name, Context::Ptr ctx);
/// Set custom Context used by the server.
/// Return pointer on inserted Context or on old Context if exists.
PrivateKeyPassphraseHandlerPtr serverPassphraseHandler();
/// Returns the configured passphrase handler of the server. If none is set, the method will create a default one
/// from an application configuration.
@ -258,6 +266,40 @@ namespace Net
static const std::string CFG_SERVER_PREFIX;
static const std::string CFG_CLIENT_PREFIX;
static const std::string CFG_PRIV_KEY_FILE;
static const std::string CFG_CERTIFICATE_FILE;
static const std::string CFG_CA_LOCATION;
static const std::string CFG_VER_MODE;
static const Context::VerificationMode VAL_VER_MODE;
static const std::string CFG_VER_DEPTH;
static const int VAL_VER_DEPTH;
static const std::string CFG_ENABLE_DEFAULT_CA;
static const bool VAL_ENABLE_DEFAULT_CA;
static const std::string CFG_CIPHER_LIST;
static const std::string CFG_CYPHER_LIST; // for backwards compatibility
static const std::string VAL_CIPHER_LIST;
static const std::string CFG_PREFER_SERVER_CIPHERS;
static const std::string CFG_DELEGATE_HANDLER;
static const std::string VAL_DELEGATE_HANDLER;
static const std::string CFG_CERTIFICATE_HANDLER;
static const std::string VAL_CERTIFICATE_HANDLER;
static const std::string CFG_CACHE_SESSIONS;
static const std::string CFG_SESSION_ID_CONTEXT;
static const std::string CFG_SESSION_CACHE_SIZE;
static const std::string CFG_SESSION_TIMEOUT;
static const std::string CFG_EXTENDED_VERIFICATION;
static const std::string CFG_REQUIRE_TLSV1;
static const std::string CFG_REQUIRE_TLSV1_1;
static const std::string CFG_REQUIRE_TLSV1_2;
static const std::string CFG_DISABLE_PROTOCOLS;
static const std::string CFG_DH_PARAMS_FILE;
static const std::string CFG_ECDH_CURVE;
#ifdef OPENSSL_FIPS
static const std::string CFG_FIPS_MODE;
static const bool VAL_FIPS_MODE;
#endif
protected:
static int verifyClientCallback(int ok, X509_STORE_CTX * pStore);
/// The return value of this method defines how errors in
@ -314,39 +356,7 @@ namespace Net
InvalidCertificateHandlerPtr _ptrClientCertificateHandler;
Poco::FastMutex _mutex;
static const std::string CFG_PRIV_KEY_FILE;
static const std::string CFG_CERTIFICATE_FILE;
static const std::string CFG_CA_LOCATION;
static const std::string CFG_VER_MODE;
static const Context::VerificationMode VAL_VER_MODE;
static const std::string CFG_VER_DEPTH;
static const int VAL_VER_DEPTH;
static const std::string CFG_ENABLE_DEFAULT_CA;
static const bool VAL_ENABLE_DEFAULT_CA;
static const std::string CFG_CIPHER_LIST;
static const std::string CFG_CYPHER_LIST; // for backwards compatibility
static const std::string VAL_CIPHER_LIST;
static const std::string CFG_PREFER_SERVER_CIPHERS;
static const std::string CFG_DELEGATE_HANDLER;
static const std::string VAL_DELEGATE_HANDLER;
static const std::string CFG_CERTIFICATE_HANDLER;
static const std::string VAL_CERTIFICATE_HANDLER;
static const std::string CFG_CACHE_SESSIONS;
static const std::string CFG_SESSION_ID_CONTEXT;
static const std::string CFG_SESSION_CACHE_SIZE;
static const std::string CFG_SESSION_TIMEOUT;
static const std::string CFG_EXTENDED_VERIFICATION;
static const std::string CFG_REQUIRE_TLSV1;
static const std::string CFG_REQUIRE_TLSV1_1;
static const std::string CFG_REQUIRE_TLSV1_2;
static const std::string CFG_DISABLE_PROTOCOLS;
static const std::string CFG_DH_PARAMS_FILE;
static const std::string CFG_ECDH_CURVE;
#ifdef OPENSSL_FIPS
static const std::string CFG_FIPS_MODE;
static const bool VAL_FIPS_MODE;
#endif
std::unordered_map<std::string, Context::Ptr> _mapPtrServerContexts;
friend class Poco::SingletonHolder<SSLManager>;
friend class Context;

58
base/poco/NetSSL_OpenSSL/src/SSLManager.cpp
View File

@ -330,27 +330,26 @@ void SSLManager::initDefaultContext(bool server)
else
_ptrDefaultClientContext->disableProtocols(disabledProtocols);
/// Temporarily disabled during the transition from boringssl to OpenSSL due to tsan issues.
/// bool cacheSessions = config.getBool(prefix + CFG_CACHE_SESSIONS, false);
/// if (server)
/// {
/// std::string sessionIdContext = config.getString(prefix + CFG_SESSION_ID_CONTEXT, config.getString("application.name", ""));
/// _ptrDefaultServerContext->enableSessionCache(cacheSessions, sessionIdContext);
/// if (config.hasProperty(prefix + CFG_SESSION_CACHE_SIZE))
/// {
/// int cacheSize = config.getInt(prefix + CFG_SESSION_CACHE_SIZE);
/// _ptrDefaultServerContext->setSessionCacheSize(cacheSize);
/// }
/// if (config.hasProperty(prefix + CFG_SESSION_TIMEOUT))
/// {
/// int timeout = config.getInt(prefix + CFG_SESSION_TIMEOUT);
/// _ptrDefaultServerContext->setSessionTimeout(timeout);
/// }
/// }
/// else
/// {
/// _ptrDefaultClientContext->enableSessionCache(cacheSessions);
/// }
bool cacheSessions = config.getBool(prefix + CFG_CACHE_SESSIONS, false);
if (server)
{
std::string sessionIdContext = config.getString(prefix + CFG_SESSION_ID_CONTEXT, config.getString("application.name", ""));
_ptrDefaultServerContext->enableSessionCache(cacheSessions, sessionIdContext);
if (config.hasProperty(prefix + CFG_SESSION_CACHE_SIZE))
{
int cacheSize = config.getInt(prefix + CFG_SESSION_CACHE_SIZE);
_ptrDefaultServerContext->setSessionCacheSize(cacheSize);
}
if (config.hasProperty(prefix + CFG_SESSION_TIMEOUT))
{
int timeout = config.getInt(prefix + CFG_SESSION_TIMEOUT);
_ptrDefaultServerContext->setSessionTimeout(timeout);
}
}
else
{
_ptrDefaultClientContext->enableSessionCache(cacheSessions);
}
bool extendedVerification = config.getBool(prefix + CFG_EXTENDED_VERIFICATION, false);
if (server)
_ptrDefaultServerContext->enableExtendedCertificateVerification(extendedVerification);
@ -429,6 +428,23 @@ void SSLManager::initCertificateHandler(bool server)
}
Context::Ptr SSLManager::getCustomServerContext(const std::string & name)
{
Poco::FastMutex::ScopedLock lock(_mutex);
auto it = _mapPtrServerContexts.find(name);
if (it != _mapPtrServerContexts.end())
return it->second;
return nullptr;
}
Context::Ptr SSLManager::setCustomServerContext(const std::string & name, Context::Ptr ctx)
{
Poco::FastMutex::ScopedLock lock(_mutex);
ctx = _mapPtrServerContexts.insert({name, ctx}).first->second;
return ctx;
}
Poco::Util::AbstractConfiguration& SSLManager::appConfig()
{
try

12
cmake/autogenerated_versions.txt
View File

@ -1,12 +1,12 @@
# This variables autochanged by tests/ci/version_helper.py:
# NOTE: has nothing common with DBMS_TCP_PROTOCOL_VERSION,
# NOTE: VERSION_REVISION has nothing common with DBMS_TCP_PROTOCOL_VERSION,
# only DBMS_TCP_PROTOCOL_VERSION should be incremented on protocol changes.
SET(VERSION_REVISION 54487)
SET(VERSION_REVISION 54488)
SET(VERSION_MAJOR 24)
SET(VERSION_MINOR 6)
SET(VERSION_MINOR 7)
SET(VERSION_PATCH 1)
SET(VERSION_GITHASH 70a1d3a63d47f0be077d67b8deb907230fc7cfb0)
SET(VERSION_DESCRIBE v24.6.1.1-testing)
SET(VERSION_STRING 24.6.1.1)
SET(VERSION_GITHASH aa023477a9265e403982fca5ee29a714db5133d9)
SET(VERSION_DESCRIBE v24.7.1.1-testing)
SET(VERSION_STRING 24.7.1.1)
# end of autochange

2
contrib/openssl vendored

@ -1 +1 @@
Subproject commit 67c0b63e578e4c751ac9edf490f5a96124fff8dc
Subproject commit 5d81fa7068fc8c07f4d0997d5b703f3c541a637c

2
contrib/re2 vendored

@ -1 +1 @@
Subproject commit a807e8a3aac2cc33c77b7071efea54fcabe38e0c
Subproject commit 85dd7ad833a73095ecf3e3baea608ba051bbe2c7

12
contrib/re2-cmake/CMakeLists.txt
View File

@ -28,16 +28,20 @@ set(RE2_SOURCES
add_library(_re2 ${RE2_SOURCES})
target_include_directories(_re2 PUBLIC "${SRC_DIR}")
target_link_libraries(_re2 PRIVATE
absl::absl_check
absl::absl_log
absl::base
absl::core_headers
absl::fixed_array
absl::flags
absl::flat_hash_map
absl::flat_hash_set
absl::hash
absl::inlined_vector
absl::strings
absl::str_format
absl::synchronization
absl::optional
absl::span)
absl::span
absl::str_format
absl::strings
absl::synchronization)
add_library(ch_contrib::re2 ALIAS _re2)

10
docker/test/stateless/run.sh
View File

@ -254,7 +254,7 @@ function run_tests()
set +e
clickhouse-test --testname --shard --zookeeper --check-zookeeper-session --hung-check --print-time \
--test-runs "$NUM_TRIES" "${ADDITIONAL_OPTIONS[@]}" 2>&1 \
--no-drop-if-fail --test-runs "$NUM_TRIES" "${ADDITIONAL_OPTIONS[@]}" 2>&1 \
| ts '%Y-%m-%d %H:%M:%S' \
| tee -a test_output/test_result.txt
set -e
@ -285,7 +285,7 @@ stop_logs_replication
# Try to get logs while server is running
failed_to_save_logs=0
for table in query_log zookeeper_log trace_log transactions_info_log metric_log blob_storage_log
for table in query_log zookeeper_log trace_log transactions_info_log metric_log blob_storage_log error_log
do
err=$(clickhouse-client -q "select * from system.$table into outfile '/test_output/$table.tsv.gz' format TSVWithNamesAndTypes")
echo "$err"
@ -339,7 +339,7 @@ if [ $failed_to_save_logs -ne 0 ]; then
# directly
# - even though ci auto-compress some files (but not *.tsv) it does this only
# for files >64MB, we want this files to be compressed explicitly
for table in query_log zookeeper_log trace_log transactions_info_log metric_log blob_storage_log
for table in query_log zookeeper_log trace_log transactions_info_log metric_log blob_storage_log error_log
do
clickhouse-local "$data_path_config" --only-system-tables --stacktrace -q "select * from system.$table format TSVWithNamesAndTypes" | zstd --threads=0 > /test_output/$table.tsv.zst ||:
if [[ -n "$USE_DATABASE_REPLICATED" ]] && [[ "$USE_DATABASE_REPLICATED" -eq 1 ]]; then
@ -379,6 +379,10 @@ fi
tar -chf /test_output/coordination.tar /var/lib/clickhouse/coordination ||:
rm -rf /var/lib/clickhouse/data/system/*/
tar -chf /test_output/store.tar /var/lib/clickhouse/store ||:
tar -chf /test_output/metadata.tar /var/lib/clickhouse/metadata/*.sql ||:
if [[ -n "$USE_DATABASE_REPLICATED" ]] && [[ "$USE_DATABASE_REPLICATED" -eq 1 ]]; then
rg -Fa "<Fatal>" /var/log/clickhouse-server/clickhouse-server1.log ||:
rg -Fa "<Fatal>" /var/log/clickhouse-server/clickhouse-server2.log ||:

4
docker/test/stateless/stress_tests.lib
View File

@ -89,10 +89,6 @@ function configure()
# since we run clickhouse from root
sudo chown root: /var/lib/clickhouse
# Set more frequent update period of asynchronous metrics to more frequently update information about real memory usage (less chance of OOM).
echo "<clickhouse><asynchronous_metrics_update_period_s>1</asynchronous_metrics_update_period_s></clickhouse>" \
> /etc/clickhouse-server/config.d/asynchronous_metrics_update_period_s.xml
local total_mem
total_mem=$(awk '/MemTotal/ { print $(NF-1) }' /proc/meminfo) # KiB
total_mem=$(( total_mem*1024 )) # bytes

1
docker/test/style/Dockerfile
View File

@ -37,6 +37,7 @@ RUN pip3 install \
tqdm==4.66.4 \
types-requests \
unidiff \
jwt \
&& rm -rf /root/.cache/pip
RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && locale-gen en_US.UTF-8

30
docs/changelogs/v24.4.3.25-stable.md Normal file
View File

@ -0,0 +1,30 @@
---
sidebar_position: 1
sidebar_label: 2024
---
# 2024 Changelog
### ClickHouse release v24.4.3.25-stable (a915dd4eda4) FIXME as compared to v24.4.2.141-stable (9e23d27bd11)
#### Build/Testing/Packaging Improvement
* Backported in [#65130](https://github.com/ClickHouse/ClickHouse/issues/65130): Decrease the `unit-test` image a few times. [#65102](https://github.com/ClickHouse/ClickHouse/pull/65102) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Backported in [#64982](https://github.com/ClickHouse/ClickHouse/issues/64982): Fix the `Block structure mismatch` error for queries reading with `PREWHERE` from the materialized view when the materialized view has columns of different types than the source table. Fixes [#64611](https://github.com/ClickHouse/ClickHouse/issues/64611). [#64855](https://github.com/ClickHouse/ClickHouse/pull/64855) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#64974](https://github.com/ClickHouse/ClickHouse/issues/64974): Fix rare crash when table has TTL with subquery + database replicated + parallel replicas + analyzer. It's really rare, but please don't use TTLs with subqueries. [#64858](https://github.com/ClickHouse/ClickHouse/pull/64858) ([alesapin](https://github.com/alesapin)).
* Backported in [#65072](https://github.com/ClickHouse/ClickHouse/issues/65072): Fix `ALTER MODIFY COMMENT` query that was broken for parameterized VIEWs in https://github.com/ClickHouse/ClickHouse/pull/54211. [#65031](https://github.com/ClickHouse/ClickHouse/pull/65031) ([Nikolay Degterinsky](https://github.com/evillique)).
* Backported in [#65177](https://github.com/ClickHouse/ClickHouse/issues/65177): Fix the `Unknown expression identifier` error for remote queries with `INTERPOLATE (alias)` (new analyzer). Fixes [#64636](https://github.com/ClickHouse/ClickHouse/issues/64636). [#65090](https://github.com/ClickHouse/ClickHouse/pull/65090) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#65263](https://github.com/ClickHouse/ClickHouse/issues/65263): Fix the bug in Hashed and Hashed_Array dictionary short circuit evaluation, which may read uninitialized number, leading to various errors. [#65256](https://github.com/ClickHouse/ClickHouse/pull/65256) ([jsc0218](https://github.com/jsc0218)).
#### Critical Bug Fix (crash, LOGICAL_ERROR, data loss, RBAC)
* Backported in [#65285](https://github.com/ClickHouse/ClickHouse/issues/65285): Fix crash with UniqInjectiveFunctionsEliminationPass and uniqCombined. [#65188](https://github.com/ClickHouse/ClickHouse/pull/65188) ([Raúl Marín](https://github.com/Algunenano)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Backported in [#65114](https://github.com/ClickHouse/ClickHouse/issues/65114): Adjust the `version_helper` and script to a new release scheme. [#64759](https://github.com/ClickHouse/ClickHouse/pull/64759) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#65225](https://github.com/ClickHouse/ClickHouse/issues/65225): Capture weak_ptr of ContextAccess for safety. [#65051](https://github.com/ClickHouse/ClickHouse/pull/65051) ([Alexander Gololobov](https://github.com/davenger)).
* Backported in [#65217](https://github.com/ClickHouse/ClickHouse/issues/65217): Fix false positives leaky memory warnings in OpenSSL. [#65125](https://github.com/ClickHouse/ClickHouse/pull/65125) ([Robert Schulze](https://github.com/rschu1ze)).

2
docs/en/engines/table-engines/integrations/iceberg.md
View File

@ -37,7 +37,7 @@ Using named collections:
<named_collections>
<iceberg_conf>
<url>http://test.s3.amazonaws.com/clickhouse-bucket/</url>
<access_key_id>test<access_key_id>
<access_key_id>test</access_key_id>
<secret_access_key>test</secret_access_key>
</iceberg_conf>
</named_collections>

2
docs/en/engines/table-engines/integrations/s3queue.md
View File

@ -13,7 +13,7 @@ This engine provides integration with [Amazon S3](https://aws.amazon.com/s3/) ec
CREATE TABLE s3_queue_engine_table (name String, value UInt32)
ENGINE = S3Queue(path, [NOSIGN, | aws_access_key_id, aws_secret_access_key,] format, [compression])
[SETTINGS]
[mode = 'unordered',]
[mode = '',]
[after_processing = 'keep',]
[keeper_path = '',]
[s3queue_loading_retries = 0,]

2
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@ -1490,6 +1490,8 @@ Differs from [PrettySpaceNoEscapes](#prettyspacenoescapes) in that up to 10,000
- [output_format_pretty_color](/docs/en/operations/settings/settings-formats.md/#output_format_pretty_color) - use ANSI escape sequences to paint colors in Pretty formats. Default value - `true`.
- [output_format_pretty_grid_charset](/docs/en/operations/settings/settings-formats.md/#output_format_pretty_grid_charset) - Charset for printing grid borders. Available charsets: ASCII, UTF-8. Default value - `UTF-8`.
- [output_format_pretty_row_numbers](/docs/en/operations/settings/settings-formats.md/#output_format_pretty_row_numbers) - Add row numbers before each row for pretty output format. Default value - `true`.
- [output_format_pretty_display_footer_column_names](/docs/en/operations/settings/settings-formats.md/#output_format_pretty_display_footer_column_names) - Display column names in the footer if table contains many rows. Default value - `true`.
- [output_format_pretty_display_footer_column_names_min_rows](/docs/en/operations/settings/settings-formats.md/#output_format_pretty_display_footer_column_names_min_rows) - Sets the minimum number of rows for which a footer will be displayed if [output_format_pretty_display_footer_column_names](/docs/en/operations/settings/settings-formats.md/#output_format_pretty_display_footer_column_names) is enabled. Default value - 50.
## RowBinary {#rowbinary}

37
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@ -508,7 +508,7 @@ Now `rule` can configure `method`, `headers`, `url`, `handler`:
- `headers` are responsible for matching the header part of the HTTP request. It is compatible with RE2’s regular expressions. It is an optional configuration. If it is not defined in the configuration file, it does not match the header portion of the HTTP request.
- `handler` contains the main processing part. Now `handler` can configure `type`, `status`, `content_type`, `response_content`, `query`, `query_param_name`.
- `handler` contains the main processing part. Now `handler` can configure `type`, `status`, `content_type`, `http_response_headers`, `response_content`, `query`, `query_param_name`.
`type` currently supports three types: [predefined_query_handler](#predefined_query_handler), [dynamic_query_handler](#dynamic_query_handler), [static](#static).
- `query` — use with `predefined_query_handler` type, executes query when the handler is called.
@ -519,6 +519,8 @@ Now `rule` can configure `method`, `headers`, `url`, `handler`:
- `content_type` — use with any type, response [content-type](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Type).
- `http_response_headers` — use with any type, response headers map. Could be used to set content type as well.
- `response_content` — use with `static` type, response content sent to client, when using the prefix ‘file://’ or ‘config://’, find the content from the file or configuration sends to client.
Next are the configuration methods for different `type`.
@ -616,6 +618,33 @@ Return a message.
<type>static</type>
<status>402</status>
<content_type>text/html; charset=UTF-8</content_type>
<http_response_headers>
<Content-Language>en</Content-Language>
<X-My-Custom-Header>43</X-My-Custom-Header>
</http_response_headers>
<response_content>Say Hi!</response_content>
</handler>
</rule>
<defaults/>
</http_handlers>
```
`http_response_headers` could be used to set content type instead of `content_type`.
``` xml
<http_handlers>
<rule>
<methods>GET</methods>
<headers><XXX>xxx</XXX></headers>
<url>/hi</url>
<handler>
<type>static</type>
<status>402</status>
<http_response_headers>
<Content-Type>text/html; charset=UTF-8</Content-Type>
<Content-Language>en</Content-Language>
<X-My-Custom-Header>43</X-My-Custom-Header>
</http_response_headers>
<response_content>Say Hi!</response_content>
</handler>
</rule>
@ -696,6 +725,9 @@ Find the content from the file send to client.
<handler>
<type>static</type>
<content_type>text/html; charset=UTF-8</content_type>
<http_response_headers>
<ETag>737060cd8c284d8af7ad3082f209582d</ETag>
</http_response_headers>
<response_content>file:///absolute_path_file.html</response_content>
</handler>
</rule>
@ -706,6 +738,9 @@ Find the content from the file send to client.
<handler>
<type>static</type>
<content_type>text/html; charset=UTF-8</content_type>
<http_response_headers>
<ETag>737060cd8c284d8af7ad3082f209582d</ETag>
</http_response_headers>
<response_content>file://./relative_path_file.html</response_content>
</handler>
</rule>

50
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@ -31,6 +31,56 @@ Alternatively, in order to enable the MySQL interface for an existing service:
3. After entering the password, you will get prompted the MySQL connection string for this service
![Connection screen - MySQL Enabled](./images/mysql5.png)
## Creating multiple MySQL users in ClickHouse Cloud
By default, there is a built-in `mysql4<subdomain>` user, which uses the same password as the `default` one. The `<subdomain>` part is the first segment of your ClickHouse Cloud hostname. This format is necessary to work with the tools that implement secure connection, but don't provide [SNI information in their TLS handshake](https://www.cloudflare.com/learning/ssl/what-is-sni), which makes it impossible to do the internal routing without an extra hint in the username (MySQL console client is one of such tools).
Because of this, we _highly recommend_ following the `mysql4<subdomain>_<username>` format when creating a new user intended to be used with the MySQL interface, where `<subdomain>` is a hint to identify your Cloud service, and `<username>` is an arbitrary suffix of your choice.
:::tip
For ClickHouse Cloud hostname like `foobar.us-east1.aws.clickhouse.cloud`, the `<subdomain>` part equals to `foobar`, and a custom MySQL username could look like `mysql4foobar_team1`.
:::
You can create extra users to use with the MySQL interface if, for example, you need to apply extra settings.
1. Optional - create a [settings profile](https://clickhouse.com/docs/en/sql-reference/statements/create/settings-profile) to apply for your custom user. For example, `my_custom_profile` with an extra setting which will be applied by default when we connect with the user we create later:
```sql
CREATE SETTINGS PROFILE my_custom_profile SETTINGS prefer_column_name_to_alias=1;
```
`prefer_column_name_to_alias` is used just as an example, you can use other settings there.
2. [Create a user](https://clickhouse.com/docs/en/sql-reference/statements/create/user) using the following format: `mysql4<subdomain>_<username>` ([see above](#creating-multiple-mysql-users-in-clickhouse-cloud)). The password must be in double SHA1 format. For example:
```sql
CREATE USER mysql4foobar_team1 IDENTIFIED WITH double_sha1_password BY 'YourPassword42$';
```
or if you want to use a custom profile for this user:
```sql
CREATE USER mysql4foobar_team1 IDENTIFIED WITH double_sha1_password BY 'YourPassword42$' SETTINGS PROFILE 'my_custom_profile';
```
where `my_custom_profile` is the name of the profile you created earlier.
3. [Grant](https://clickhouse.com/docs/en/sql-reference/statements/grant) the new user the necessary permissions to interact with the desired tables or databases. For example, if you want to grant access to `system.query_log` only:
```sql
GRANT SELECT ON system.query_log TO mysql4foobar_team1;
```
4. Use the created user to connect to your ClickHouse Cloud service with the MySQL interface.
### Troubleshooting multiple MySQL users in ClickHouse Cloud
If you created a new MySQL user, and you see the following error while connecting via MySQL CLI client:
```
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 54
```
In this case, ensure that the username follows the `mysql4<subdomain>_<username>` format, as described ([above](#creating-multiple-mysql-users-in-clickhouse-cloud)).
## Enabling the MySQL Interface On Self-managed ClickHouse
Add the [mysql_port](../operations/server-configuration-parameters/settings.md#server_configuration_parameters-mysql_port) setting to your server's configuration file. For example, you could define the port in a new XML file in your `config.d/` [folder](../operations/configuration-files):

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@ -59,10 +59,10 @@ For that, we need to use `jemalloc`'s tool called [jeprof](https://github.com/je
If that’s the case, we recommend installing an [alternative implementation](https://github.com/gimli-rs/addr2line) of the tool.
```
git clone https://github.com/gimli-rs/addr2line
git clone https://github.com/gimli-rs/addr2line.git --depth=1 --branch=0.23.0
cd addr2line
cargo b --examples -r
cp ./target/release/examples/addr2line path/to/current/addr2line
cargo build --features bin --release
cp ./target/release/addr2line path/to/current/addr2line
```
:::

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@ -591,6 +591,22 @@ Default value: 100000
<max_part_num_to_warn>400</max_part_num_to_warn>
```
## max\_table\_num\_to\_throw {#max-table-num-to-throw}
If number of tables is greater than this value, server will throw an exception. 0 means no limitation. View, remote tables, dictionary, system tables are not counted. Only count table in Atomic/Ordinary/Replicated/Lazy database engine.Default value: 0
**Example**
```xml
<max_table_num_to_throw>400</max_table_num_to_throw>
```
## max\_database\_num\_to\_throw {#max-table-num-to-throw}
If number of _database is greater than this value, server will throw an exception. 0 means no limitation.
Default value: 0
**Example**
```xml
<max_database_num_to_throw>400</max_database_num_to_throw>
```
## max_temporary_data_on_disk_size
@ -938,6 +954,38 @@ Or it can be set in hex:
Everything mentioned above can be applied for `aes_256_gcm_siv` (but the key must be 32 bytes long).
## error_log {#error_log}
It is disabled by default.
**Enabling**
To manually turn on error history collection [`system.error_log`](../../operations/system-tables/error_log.md), create `/etc/clickhouse-server/config.d/error_log.xml` with the following content:
``` xml
<clickhouse>
<error_log>
<database>system</database>
<table>error_log</table>
<flush_interval_milliseconds>7500</flush_interval_milliseconds>
<collect_interval_milliseconds>1000</collect_interval_milliseconds>
<max_size_rows>1048576</max_size_rows>
<reserved_size_rows>8192</reserved_size_rows>
<buffer_size_rows_flush_threshold>524288</buffer_size_rows_flush_threshold>
<flush_on_crash>false</flush_on_crash>
</error_log>
</clickhouse>
```
**Disabling**
To disable `error_log` setting, you should create the following file `/etc/clickhouse-server/config.d/disable_error_log.xml` with the following content:
``` xml
<clickhouse>
<error_log remove="1" />
</clickhouse>
```
## custom_settings_prefixes {#custom_settings_prefixes}
@ -1901,7 +1949,7 @@ For more information, see the MergeTreeSettings.h header file.
## metric_log {#metric_log}
It is enabled by default. If it`s not, you can do this manually.
It is disabled by default.
**Enabling**
@ -3084,3 +3132,21 @@ This setting is only necessary for the migration period and will become obsolete
Type: Bool
Default: 1
## merge_workload {#merge_workload}
Used to regulate how resources are utilized and shared between merges and other workloads. Specified value is used as `workload` setting value for all background merges. Can be overridden by a merge tree setting.
Default value: "default"
**See Also**
- [Workload Scheduling](/docs/en/operations/workload-scheduling.md)
## mutation_workload {#mutation_workload}
Used to regulate how resources are utilized and shared between mutations and other workloads. Specified value is used as `workload` setting value for all background mutations. Can be overridden by a merge tree setting.
Default value: "default"
**See Also**
- [Workload Scheduling](/docs/en/operations/workload-scheduling.md)

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@ -974,6 +974,24 @@ Default value: false
- [exclude_deleted_rows_for_part_size_in_merge](#exclude_deleted_rows_for_part_size_in_merge) setting
## merge_workload
Used to regulate how resources are utilized and shared between merges and other workloads. Specified value is used as `workload` setting value for background merges of this table. If not specified (empty string), then server setting `merge_workload` is used instead.
Default value: an empty string
**See Also**
- [Workload Scheduling](/docs/en/operations/workload-scheduling.md)
## mutation_workload
Used to regulate how resources are utilized and shared between mutations and other workloads. Specified value is used as `workload` setting value for background mutations of this table. If not specified (empty string), then server setting `mutation_workload` is used instead.
Default value: an empty string
**See Also**
- [Workload Scheduling](/docs/en/operations/workload-scheduling.md)
### optimize_row_order
Controls if the row order should be optimized during inserts to improve the compressability of the newly inserted table part.

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@ -1706,6 +1706,43 @@ Result:
└────────────┘
```
## output_format_pretty_display_footer_column_names
Display column names in the footer if there are many table rows.
Possible values:
- 0 — No column names are displayed in the footer.
- 1 — Column names are displayed in the footer if row count is greater than or equal to the threshold value set by [output_format_pretty_display_footer_column_names_min_rows](#output_format_pretty_display_footer_column_names_min_rows) (50 by default).
Default value: `1`.
**Example**
Query:
```sql
SELECT *, toTypeName(*) FROM (SELECT * FROM system.numbers LIMIT 1000);
```
Result:
```response
┌─number─┬─toTypeName(number)─┐
1. │ 0 │ UInt64 │
2. │ 1 │ UInt64 │
3. │ 2 │ UInt64 │
...
999. │ 998 │ UInt64 │
1000. │ 999 │ UInt64 │
└─number─┴─toTypeName(number)─┘
```
## output_format_pretty_display_footer_column_names_min_rows
Sets the minimum number of rows for which a footer with column names will be displayed if setting [output_format_pretty_display_footer_column_names](#output_format_pretty_display_footer_column_names) is enabled.
Default value: `50`.
## Template format settings {#template-format-settings}
### format_template_resultset {#format_template_resultset}

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@ -1592,19 +1592,19 @@ Default value: `default`.
## parallel_replicas_custom_key_range_lower {#parallel_replicas_custom_key_range_lower}
Allows the filter type `range` to split the work evenly between replicas based on the custom range `[parallel_replicas_custom_key_range_lower, INT_MAX]`.
Allows the filter type `range` to split the work evenly between replicas based on the custom range `[parallel_replicas_custom_key_range_lower, INT_MAX]`.
When used in conjuction with [parallel_replicas_custom_key_range_upper](#parallel_replicas_custom_key_range_upper), it lets the filter evenly split the work over replicas for the range `[parallel_replicas_custom_key_range_lower, parallel_replicas_custom_key_range_upper]`.
When used in conjuction with [parallel_replicas_custom_key_range_upper](#parallel_replicas_custom_key_range_upper), it lets the filter evenly split the work over replicas for the range `[parallel_replicas_custom_key_range_lower, parallel_replicas_custom_key_range_upper]`.
Note: This setting will not cause any additional data to be filtered during query processing, rather it changes the points at which the range filter breaks up the range `[0, INT_MAX]` for parallel processing.
Note: This setting will not cause any additional data to be filtered during query processing, rather it changes the points at which the range filter breaks up the range `[0, INT_MAX]` for parallel processing.
## parallel_replicas_custom_key_range_upper {#parallel_replicas_custom_key_range_upper}
Allows the filter type `range` to split the work evenly between replicas based on the custom range `[0, parallel_replicas_custom_key_range_upper]`. A value of 0 disables the upper bound, setting it the max value of the custom key expression.
When used in conjuction with [parallel_replicas_custom_key_range_lower](#parallel_replicas_custom_key_range_lower), it lets the filter evenly split the work over replicas for the range `[parallel_replicas_custom_key_range_lower, parallel_replicas_custom_key_range_upper]`.
When used in conjuction with [parallel_replicas_custom_key_range_lower](#parallel_replicas_custom_key_range_lower), it lets the filter evenly split the work over replicas for the range `[parallel_replicas_custom_key_range_lower, parallel_replicas_custom_key_range_upper]`.
Note: This setting will not cause any additional data to be filtered during query processing, rather it changes the points at which the range filter breaks up the range `[0, INT_MAX]` for parallel processing.
Note: This setting will not cause any additional data to be filtered during query processing, rather it changes the points at which the range filter breaks up the range `[0, INT_MAX]` for parallel processing.
## allow_experimental_parallel_reading_from_replicas
@ -3188,7 +3188,7 @@ Default value: `0`.
## lightweight_deletes_sync {#lightweight_deletes_sync}
The same as 'mutation_sync', but controls only execution of lightweight deletes.
The same as 'mutation_sync', but controls only execution of lightweight deletes.
Possible values:
@ -5150,7 +5150,7 @@ Allows using statistic to optimize the order of [prewhere conditions](../../sql-
## analyze_index_with_space_filling_curves
If a table has a space-filling curve in its index, e.g. `ORDER BY mortonEncode(x, y)`, and the query has conditions on its arguments, e.g. `x >= 10 AND x <= 20 AND y >= 20 AND y <= 30`, use the space-filling curve for index analysis.
If a table has a space-filling curve in its index, e.g. `ORDER BY mortonEncode(x, y)` or `ORDER BY hilbertEncode(x, y)`, and the query has conditions on its arguments, e.g. `x >= 10 AND x <= 20 AND y >= 20 AND y <= 30`, use the space-filling curve for index analysis.
## query_plan_enable_optimizations {#query_plan_enable_optimizations}
@ -5418,6 +5418,15 @@ When set to `false` than all attempts are made with identical timeouts.
Default value: `true`.
## allow_deprecated_snowflake_conversion_functions {#allow_deprecated_snowflake_conversion_functions}
Functions `snowflakeToDateTime`, `snowflakeToDateTime64`, `dateTimeToSnowflake`, and `dateTime64ToSnowflake` are deprecated and disabled by default.
Please use functions `snowflakeIDToDateTime`, `snowflakeIDToDateTime64`, `dateTimeToSnowflakeID`, and `dateTime64ToSnowflakeID` instead.
To re-enable the deprecated functions (e.g., during a transition period), please set this setting to `true`.
Default value: `false`
## allow_experimental_variant_type {#allow_experimental_variant_type}
Allows creation of experimental [Variant](../../sql-reference/data-types/variant.md).

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@ -639,6 +639,10 @@ An internal metric of the low-level memory allocator (jemalloc). See https://jem
An internal metric of the low-level memory allocator (jemalloc). See https://jemalloc.net/jemalloc.3.html
### jemalloc.prof.active
An internal metric of the low-level memory allocator (jemalloc). See https://jemalloc.net/jemalloc.3.html
**See Also**
- [Monitoring](../../operations/monitoring.md) — Base concepts of ClickHouse monitoring.

39
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@ -0,0 +1,39 @@
---
slug: /en/operations/system-tables/error_log
---
# error_log
Contains history of error values from table `system.errors`, periodically flushed to disk.
Columns:
- `hostname` ([LowCardinality(String)](../../sql-reference/data-types/string.md)) — Hostname of the server executing the query.
- `event_date` ([Date](../../sql-reference/data-types/date.md)) — Event date.
- `event_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — Event time.
- `code` ([Int32](../../sql-reference/data-types/int-uint.md)) — Code number of the error.
- `error` ([LowCardinality(String)](../../sql-reference/data-types/string.md)) - Name of the error.
- `value` ([UInt64](../../sql-reference/data-types/int-uint.md)) — The number of times this error happened.
- `remote` ([UInt8](../../sql-reference/data-types/int-uint.md)) — Remote exception (i.e. received during one of the distributed queries).
**Example**
``` sql
SELECT * FROM system.error_log LIMIT 1 FORMAT Vertical;
```
``` text
Row 1:
──────
hostname: clickhouse.eu-central1.internal
event_date: 2024-06-18
event_time: 2024-06-18 07:32:39
code: 999
error: KEEPER_EXCEPTION
value: 2
remote: 0
```
**See also**
- [error_log setting](../../operations/server-configuration-parameters/settings.md#error_log) — Enabling and disabling the setting.
- [system.errors](../../operations/system-tables/errors.md) — Contains error codes with the number of times they have been triggered.
- [Monitoring](../../operations/monitoring.md) — Base concepts of ClickHouse monitoring.

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@ -113,6 +113,8 @@ Columns:
- `used_functions` ([Array(String)](../../sql-reference/data-types/array.md)) — Canonical names of `functions`, which were used during query execution.
- `used_storages` ([Array(String)](../../sql-reference/data-types/array.md)) — Canonical names of `storages`, which were used during query execution.
- `used_table_functions` ([Array(String)](../../sql-reference/data-types/array.md)) — Canonical names of `table functions`, which were used during query execution.
- `used_privileges` ([Array(String)](../../sql-reference/data-types/array.md)) - Privileges which were successfully checked during query execution.
- `missing_privileges` ([Array(String)](../../sql-reference/data-types/array.md)) - Privileges that are missing during query execution.
- `query_cache_usage` ([Enum8](../../sql-reference/data-types/enum.md)) — Usage of the [query cache](../query-cache.md) during query execution. Values:
- `'Unknown'` = Status unknown.
- `'None'` = The query result was neither written into nor read from the query cache.
@ -194,6 +196,8 @@ used_formats: []
used_functions: []
used_storages: []
used_table_functions: []
used_privileges: []
missing_privileges: []
query_cache_usage: None
```

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@ -47,6 +47,8 @@ Example:
Queries can be marked with setting `workload` to distinguish different workloads. If `workload` is not set, than value "default" is used. Note that you are able to specify the other value using settings profiles. Setting constraints can be used to make `workload` constant if you want all queries from the user to be marked with fixed value of `workload` setting.
It is possible to assign a `workload` setting for background activities. Merges and mutations are using `merge_workload` and `mutation_workload` server settings correspondingly. These values can also be overridden for specific tables using `merge_workload` and `mutation_workload` merge tree settings
Let's consider an example of a system with two different workloads: "production" and "development".
```sql
@ -151,6 +153,9 @@ Example:
</clickhouse>
```
## See also
- [system.scheduler](/docs/en/operations/system-tables/scheduler.md)
- [merge_workload](/docs/en/operations/settings/merge-tree-settings.md#merge_workload) merge tree setting
- [merge_workload](/docs/en/operations/server-configuration-parameters/settings.md#merge_workload) global server setting
- [mutation_workload](/docs/en/operations/settings/merge-tree-settings.md#mutation_workload) merge tree setting
- [mutation_workload](/docs/en/operations/server-configuration-parameters/settings.md#mutation_workload) global server setting

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/analysis_of_variance
sidebar_position: 6
sidebar_position: 101
---
# analysisOfVariance

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/any
sidebar_position: 6
sidebar_position: 102
---
# any

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/anyheavy
sidebar_position: 103
sidebar_position: 104
---
# anyHeavy

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/anylast
sidebar_position: 104
sidebar_position: 105
---
# anyLast

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/anylast_respect_nulls
sidebar_position: 104
sidebar_position: 106
---
# anyLast_respect_nulls

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/approxtopk
sidebar_position: 212
sidebar_position: 107
---
# approx_top_k

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/approxtopsum
sidebar_position: 212
sidebar_position: 108
---
# approx_top_sum

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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/argmax
sidebar_position: 106
sidebar_position: 109
---
# argMax

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/argmin
sidebar_position: 105
sidebar_position: 110
---
# argMin

2
docs/en/sql-reference/aggregate-functions/reference/arrayconcatagg.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/array_concat_agg
sidebar_position: 110
sidebar_position: 111
---
# array_concat_agg

2
docs/en/sql-reference/aggregate-functions/reference/avg.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/avg
sidebar_position: 5
sidebar_position: 112
---
# avg

2
docs/en/sql-reference/aggregate-functions/reference/avgweighted.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/avgweighted
sidebar_position: 107
sidebar_position: 113
---
# avgWeighted

2
docs/en/sql-reference/aggregate-functions/reference/boundrat.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/boundingRatio
sidebar_position: 2
sidebar_position: 114
title: boundingRatio
---

2
docs/en/sql-reference/aggregate-functions/reference/categoricalinformationvalue.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/categoricalinformationvalue
sidebar_position: 250
sidebar_position: 115
title: categoricalInformationValue
---

2
docs/en/sql-reference/aggregate-functions/reference/contingency.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/contingency
sidebar_position: 350
sidebar_position: 116
---
# contingency

2
docs/en/sql-reference/aggregate-functions/reference/corr.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/corr
sidebar_position: 107
sidebar_position: 117
---
# corr

2
docs/en/sql-reference/aggregate-functions/reference/corrmatrix.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/corrmatrix
sidebar_position: 108
sidebar_position: 118
---
# corrMatrix

2
docs/en/sql-reference/aggregate-functions/reference/corrstable.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/corrstable
sidebar_position: 107
sidebar_position: 119
---
# corrStable

2
docs/en/sql-reference/aggregate-functions/reference/count.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/count
sidebar_position: 1
sidebar_position: 120
---
# count

2
docs/en/sql-reference/aggregate-functions/reference/covarpop.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/covarpop
sidebar_position: 37
sidebar_position: 121
---
# covarPop

2
docs/en/sql-reference/aggregate-functions/reference/covarpopmatrix.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/covarpopmatrix
sidebar_position: 36
sidebar_position: 122
---
# covarPopMatrix

2
docs/en/sql-reference/aggregate-functions/reference/covarpopstable.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/covarpopstable
sidebar_position: 36
sidebar_position: 123
---
# covarPopStable

2
docs/en/sql-reference/aggregate-functions/reference/covarsamp.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/covarsamp
sidebar_position: 37
sidebar_position: 124
---
# covarSamp

2
docs/en/sql-reference/aggregate-functions/reference/covarsampmatrix.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/covarsampmatrix
sidebar_position: 38
sidebar_position: 125
---
# covarSampMatrix

2
docs/en/sql-reference/aggregate-functions/reference/covarsampstable.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/covarsampstable
sidebar_position: 37
sidebar_position: 126
---
# covarSampStable

2
docs/en/sql-reference/aggregate-functions/reference/cramersv.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/cramersv
sidebar_position: 351
sidebar_position: 127
---
# cramersV

2
docs/en/sql-reference/aggregate-functions/reference/cramersvbiascorrected.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/cramersvbiascorrected
sidebar_position: 352
sidebar_position: 128
---
# cramersVBiasCorrected

2
docs/en/sql-reference/aggregate-functions/reference/deltasum.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/deltasum
sidebar_position: 141
sidebar_position: 129
---
# deltaSum

2
docs/en/sql-reference/aggregate-functions/reference/deltasumtimestamp.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/deltasumtimestamp
sidebar_position: 141
sidebar_position: 130
title: deltaSumTimestamp
---

2
docs/en/sql-reference/aggregate-functions/reference/entropy.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/entropy
sidebar_position: 302
sidebar_position: 131
---
# entropy

80
docs/en/sql-reference/aggregate-functions/reference/exponentialmovingaverage.md
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@ -1,7 +1,7 @@
---
slug: /en/sql-reference/aggregate-functions/reference/exponentialmovingaverage
sidebar_position: 108
sidebar_title: exponentialMovingAverage
slug: /en/sql-reference/aggregate-functions/reference/exponentialMovingAverage
sidebar_position: 132
title: exponentialMovingAverage
---
## exponentialMovingAverage
@ -96,56 +96,56 @@ Result:
``` text
┌─value─┬─time─┬─round(exp_smooth, 3)─┬─bar────────────────────────────────────────┐
│ 1 │ 0 │ 0.067 │ ███▎ │
│ 1 │ 0 │ 0.067 │ ███▎ │
│ 0 │ 1 │ 0.062 │ ███ │
│ 0 │ 2 │ 0.058 │ ██▊ │
│ 0 │ 3 │ 0.054 │ ██▋ │
│ 0 │ 2 │ 0.058 │ ██▊ │
│ 0 │ 3 │ 0.054 │ ██▋ │
│ 0 │ 4 │ 0.051 │ ██▌ │
│ 0 │ 5 │ 0.047 │ ██▎ │
│ 0 │ 6 │ 0.044 │ ██▏ │
│ 0 │ 5 │ 0.047 │ ██▎ │
│ 0 │ 6 │ 0.044 │ ██▏ │
│ 0 │ 7 │ 0.041 │ ██ │
│ 0 │ 8 │ 0.038 │ █▊ │
│ 0 │ 9 │ 0.036 │ █▋ │
│ 0 │ 10 │ 0.033 │ █▋ │
│ 0 │ 8 │ 0.038 │ █▊ │
│ 0 │ 9 │ 0.036 │ █▋ │
│ 0 │ 10 │ 0.033 │ █▋ │
│ 0 │ 11 │ 0.031 │ █▌ │
│ 0 │ 12 │ 0.029 │ █▍ │
│ 0 │ 13 │ 0.027 │ █▎ │
│ 0 │ 14 │ 0.025 │ █▎ │
│ 0 │ 15 │ 0.024 │ █▏ │
│ 0 │ 12 │ 0.029 │ █▍ │
│ 0 │ 13 │ 0.027 │ █▎ │
│ 0 │ 14 │ 0.025 │ █▎ │
│ 0 │ 15 │ 0.024 │ █▏ │
│ 0 │ 16 │ 0.022 │ █ │
│ 0 │ 17 │ 0.021 │ █ │
│ 0 │ 18 │ 0.019 │ ▊ │
│ 0 │ 19 │ 0.018 │ ▊ │
│ 0 │ 20 │ 0.017 │ ▋ │
│ 0 │ 21 │ 0.016 │ ▋ │
│ 0 │ 22 │ 0.015 │ ▋ │
│ 0 │ 23 │ 0.014 │ ▋ │
│ 0 │ 24 │ 0.013 │ ▋ │
│ 1 │ 25 │ 0.079 │ ███▊ │
│ 0 │ 18 │ 0.019 │ ▊ │
│ 0 │ 19 │ 0.018 │ ▊ │
│ 0 │ 20 │ 0.017 │ ▋ │
│ 0 │ 21 │ 0.016 │ ▋ │
│ 0 │ 22 │ 0.015 │ ▋ │
│ 0 │ 23 │ 0.014 │ ▋ │
│ 0 │ 24 │ 0.013 │ ▋ │
│ 1 │ 25 │ 0.079 │ ███▊ │
│ 1 │ 26 │ 0.14 │ ███████ │
│ 1 │ 27 │ 0.198 │ █████████▊ │
│ 1 │ 27 │ 0.198 │ █████████▊ │
│ 1 │ 28 │ 0.252 │ ████████████▌ │
│ 1 │ 29 │ 0.302 │ ███████████████ │
│ 1 │ 30 │ 0.349 │ █████████████████▍ │
│ 1 │ 30 │ 0.349 │ █████████████████▍ │
│ 1 │ 31 │ 0.392 │ ███████████████████▌ │
│ 1 │ 32 │ 0.433 │ █████████████████████▋ │
│ 1 │ 32 │ 0.433 │ █████████████████████▋ │
│ 1 │ 33 │ 0.471 │ ███████████████████████▌ │
│ 1 │ 34 │ 0.506 │ █████████████████████████▎ │
│ 1 │ 35 │ 0.539 │ ██████████████████████████▊ │
│ 1 │ 34 │ 0.506 │ █████████████████████████▎ │
│ 1 │ 35 │ 0.539 │ ██████████████████████████▊ │
│ 1 │ 36 │ 0.57 │ ████████████████████████████▌ │
│ 1 │ 37 │ 0.599 │ █████████████████████████████▊ │
│ 1 │ 38 │ 0.626 │ ███████████████████████████████▎ │
│ 1 │ 37 │ 0.599 │ █████████████████████████████▊ │
│ 1 │ 38 │ 0.626 │ ███████████████████████████████▎ │
│ 1 │ 39 │ 0.651 │ ████████████████████████████████▌ │
│ 1 │ 40 │ 0.674 │ █████████████████████████████████▋ │
│ 1 │ 41 │ 0.696 │ ██████████████████████████████████▋ │
│ 1 │ 42 │ 0.716 │ ███████████████████████████████████▋ │
│ 1 │ 43 │ 0.735 │ ████████████████████████████████████▋ │
│ 1 │ 44 │ 0.753 │ █████████████████████████████████████▋ │
│ 1 │ 45 │ 0.77 │ ██████████████████████████████████████▍ │
│ 1 │ 46 │ 0.785 │ ███████████████████████████████████████▎ │
│ 1 │ 47 │ 0.8 │ ███████████████████████████████████████▊ │
│ 1 │ 48 │ 0.813 │ ████████████████████████████████████████▋ │
│ 1 │ 49 │ 0.825 │ █████████████████████████████████████████▎│
│ 1 │ 40 │ 0.674 │ █████████████████████████████████▋ │
│ 1 │ 41 │ 0.696 │ ██████████████████████████████████▋ │
│ 1 │ 42 │ 0.716 │ ███████████████████████████████████▋ │
│ 1 │ 43 │ 0.735 │ ████████████████████████████████████▋ │
│ 1 │ 44 │ 0.753 │ █████████████████████████████████████▋ │
│ 1 │ 45 │ 0.77 │ ██████████████████████████████████████▍ │
│ 1 │ 46 │ 0.785 │ ███████████████████████████████████████▎ │
│ 1 │ 47 │ 0.8 │ ███████████████████████████████████████▊ │
│ 1 │ 48 │ 0.813 │ ████████████████████████████████████████▋ │
│ 1 │ 49 │ 0.825 │ █████████████████████████████████████████▎ │
└───────┴──────┴──────────────────────┴────────────────────────────────────────────┘
```

105
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@ -0,0 +1,105 @@
---
slug: /en/sql-reference/aggregate-functions/reference/exponentialTimeDecayedAvg
sidebar_position: 133
title: exponentialTimeDecayedAvg
---
## exponentialTimeDecayedAvg
Returns the exponentially smoothed weighted moving average of values of a time series at point `t` in time.
**Syntax**
```sql
exponentialTimeDecayedAvg(x)(v, t)
```
**Arguments**
- `v` — Value. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
- `t` — Time. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md), [DateTime](../../data-types/datetime.md), [DateTime64](../../data-types/datetime64.md).
**Parameters**
- `x` — Half-life period. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
**Returned values**
- Returns an exponentially smoothed weighted moving average at index `t` in time. [Float64](../../data-types/float.md).
**Examples**
Query:
```sql
SELECT
value,
time,
round(exp_smooth, 3),
bar(exp_smooth, 0, 5, 50) AS bar
FROM
(
SELECT
(number = 0) OR (number >= 25) AS value,
number AS time,
exponentialTimeDecayedAvg(10)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth
FROM numbers(50)
);
```
Response:
```sql
┌─value─┬─time─┬─round(exp_smooth, 3)─┬─bar────────┐
1. │ 1 │ 0 │ 1 │ ██████████ │
2. │ 0 │ 1 │ 0.475 │ ████▊ │
3. │ 0 │ 2 │ 0.301 │ ███ │
4. │ 0 │ 3 │ 0.214 │ ██▏ │
5. │ 0 │ 4 │ 0.162 │ █▌ │
6. │ 0 │ 5 │ 0.128 │ █▎ │
7. │ 0 │ 6 │ 0.104 │ █ │
8. │ 0 │ 7 │ 0.086 │ ▊ │
9. │ 0 │ 8 │ 0.072 │ ▋ │
0. │ 0 │ 9 │ 0.061 │ ▌ │
1. │ 0 │ 10 │ 0.052 │ ▌ │
2. │ 0 │ 11 │ 0.045 │ ▍ │
3. │ 0 │ 12 │ 0.039 │ ▍ │
4. │ 0 │ 13 │ 0.034 │ ▎ │
5. │ 0 │ 14 │ 0.03 │ ▎ │
6. │ 0 │ 15 │ 0.027 │ ▎ │
7. │ 0 │ 16 │ 0.024 │ ▏ │
8. │ 0 │ 17 │ 0.021 │ ▏ │
9. │ 0 │ 18 │ 0.018 │ ▏ │
0. │ 0 │ 19 │ 0.016 │ ▏ │
1. │ 0 │ 20 │ 0.015 │ ▏ │
2. │ 0 │ 21 │ 0.013 │ ▏ │
3. │ 0 │ 22 │ 0.012 │ │
4. │ 0 │ 23 │ 0.01 │ │
5. │ 0 │ 24 │ 0.009 │ │
6. │ 1 │ 25 │ 0.111 │ █ │
7. │ 1 │ 26 │ 0.202 │ ██ │
8. │ 1 │ 27 │ 0.283 │ ██▊ │
9. │ 1 │ 28 │ 0.355 │ ███▌ │
0. │ 1 │ 29 │ 0.42 │ ████▏ │
1. │ 1 │ 30 │ 0.477 │ ████▊ │
2. │ 1 │ 31 │ 0.529 │ █████▎ │
3. │ 1 │ 32 │ 0.576 │ █████▊ │
4. │ 1 │ 33 │ 0.618 │ ██████▏ │
5. │ 1 │ 34 │ 0.655 │ ██████▌ │
6. │ 1 │ 35 │ 0.689 │ ██████▉ │
7. │ 1 │ 36 │ 0.719 │ ███████▏ │
8. │ 1 │ 37 │ 0.747 │ ███████▍ │
9. │ 1 │ 38 │ 0.771 │ ███████▋ │
0. │ 1 │ 39 │ 0.793 │ ███████▉ │
1. │ 1 │ 40 │ 0.813 │ ████████▏ │
2. │ 1 │ 41 │ 0.831 │ ████████▎ │
3. │ 1 │ 42 │ 0.848 │ ████████▍ │
4. │ 1 │ 43 │ 0.862 │ ████████▌ │
5. │ 1 │ 44 │ 0.876 │ ████████▊ │
6. │ 1 │ 45 │ 0.888 │ ████████▉ │
7. │ 1 │ 46 │ 0.898 │ ████████▉ │
8. │ 1 │ 47 │ 0.908 │ █████████ │
9. │ 1 │ 48 │ 0.917 │ █████████▏ │
0. │ 1 │ 49 │ 0.925 │ █████████▏ │
└───────┴──────┴──────────────────────┴────────────┘
```

104
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@ -0,0 +1,104 @@
---
slug: /en/sql-reference/aggregate-functions/reference/exponentialTimeDecayedCount
sidebar_position: 134
title: exponentialTimeDecayedCount
---
## exponentialTimeDecayedCount
Returns the cumulative exponential decay over a time series at the index `t` in time.
**Syntax**
```sql
exponentialTimeDecayedCount(x)(t)
```
**Arguments**
- `t` — Time. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md), [DateTime](../../data-types/datetime.md), [DateTime64](../../data-types/datetime64.md).
**Parameters**
- `x` — Half-life period. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
**Returned values**
- Returns the cumulative exponential decay at the given point in time. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
SELECT
value,
time,
round(exp_smooth, 3),
bar(exp_smooth, 0, 20, 50) AS bar
FROM
(
SELECT
(number % 5) = 0 AS value,
number AS time,
exponentialTimeDecayedCount(10)(time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth
FROM numbers(50)
);
```
Result:
```response
┌─value─┬─time─┬─round(exp_smooth, 3)─┬─bar────────────────────────┐
1. │ 1 │ 0 │ 1 │ ██▌ │
2. │ 0 │ 1 │ 1.905 │ ████▊ │
3. │ 0 │ 2 │ 2.724 │ ██████▊ │
4. │ 0 │ 3 │ 3.464 │ ████████▋ │
5. │ 0 │ 4 │ 4.135 │ ██████████▎ │
6. │ 1 │ 5 │ 4.741 │ ███████████▊ │
7. │ 0 │ 6 │ 5.29 │ █████████████▏ │
8. │ 0 │ 7 │ 5.787 │ ██████████████▍ │
9. │ 0 │ 8 │ 6.236 │ ███████████████▌ │
10. │ 0 │ 9 │ 6.643 │ ████████████████▌ │
11. │ 1 │ 10 │ 7.01 │ █████████████████▌ │
12. │ 0 │ 11 │ 7.343 │ ██████████████████▎ │
13. │ 0 │ 12 │ 7.644 │ ███████████████████ │
14. │ 0 │ 13 │ 7.917 │ ███████████████████▊ │
15. │ 0 │ 14 │ 8.164 │ ████████████████████▍ │
16. │ 1 │ 15 │ 8.387 │ ████████████████████▉ │
17. │ 0 │ 16 │ 8.589 │ █████████████████████▍ │
18. │ 0 │ 17 │ 8.771 │ █████████████████████▉ │
19. │ 0 │ 18 │ 8.937 │ ██████████████████████▎ │
20. │ 0 │ 19 │ 9.086 │ ██████████████████████▋ │
21. │ 1 │ 20 │ 9.222 │ ███████████████████████ │
22. │ 0 │ 21 │ 9.344 │ ███████████████████████▎ │
23. │ 0 │ 22 │ 9.455 │ ███████████████████████▋ │
24. │ 0 │ 23 │ 9.555 │ ███████████████████████▉ │
25. │ 0 │ 24 │ 9.646 │ ████████████████████████ │
26. │ 1 │ 25 │ 9.728 │ ████████████████████████▎ │
27. │ 0 │ 26 │ 9.802 │ ████████████████████████▌ │
28. │ 0 │ 27 │ 9.869 │ ████████████████████████▋ │
29. │ 0 │ 28 │ 9.93 │ ████████████████████████▊ │
30. │ 0 │ 29 │ 9.985 │ ████████████████████████▉ │
31. │ 1 │ 30 │ 10.035 │ █████████████████████████ │
32. │ 0 │ 31 │ 10.08 │ █████████████████████████▏ │
33. │ 0 │ 32 │ 10.121 │ █████████████████████████▎ │
34. │ 0 │ 33 │ 10.158 │ █████████████████████████▍ │
35. │ 0 │ 34 │ 10.191 │ █████████████████████████▍ │
36. │ 1 │ 35 │ 10.221 │ █████████████████████████▌ │
37. │ 0 │ 36 │ 10.249 │ █████████████████████████▌ │
38. │ 0 │ 37 │ 10.273 │ █████████████████████████▋ │
39. │ 0 │ 38 │ 10.296 │ █████████████████████████▋ │
40. │ 0 │ 39 │ 10.316 │ █████████████████████████▊ │
41. │ 1 │ 40 │ 10.334 │ █████████████████████████▊ │
42. │ 0 │ 41 │ 10.351 │ █████████████████████████▉ │
43. │ 0 │ 42 │ 10.366 │ █████████████████████████▉ │
44. │ 0 │ 43 │ 10.379 │ █████████████████████████▉ │
45. │ 0 │ 44 │ 10.392 │ █████████████████████████▉ │
46. │ 1 │ 45 │ 10.403 │ ██████████████████████████ │
47. │ 0 │ 46 │ 10.413 │ ██████████████████████████ │
48. │ 0 │ 47 │ 10.422 │ ██████████████████████████ │
49. │ 0 │ 48 │ 10.43 │ ██████████████████████████ │
50. │ 0 │ 49 │ 10.438 │ ██████████████████████████ │
└───────┴──────┴──────────────────────┴────────────────────────────┘
```

105
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@ -0,0 +1,105 @@
---
slug: /en/sql-reference/aggregate-functions/reference/exponentialTimeDecayedMax
sidebar_position: 135
title: exponentialTimeDecayedMax
---
## exponentialTimeDecayedMax
Returns the maximum of the computed exponentially smoothed moving average at index `t` in time with that at `t-1`.
**Syntax**
```sql
exponentialTimeDecayedMax(x)(value, timeunit)
```
**Arguments**
- `value` — Value. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
- `timeunit` — Timeunit. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md), [DateTime](../../data-types/datetime.md), [DateTime64](../../data-types/datetime64.md).
**Parameters**
- `x` — Half-life period. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
**Returned values**
- Returns the maximum of the exponentially smoothed weighted moving average at `t` and `t-1`. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
SELECT
value,
time,
round(exp_smooth, 3),
bar(exp_smooth, 0, 5, 50) AS bar
FROM
(
SELECT
(number = 0) OR (number >= 25) AS value,
number AS time,
exponentialTimeDecayedMax(10)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth
FROM numbers(50)
);
```
Result:
```response
┌─value─┬─time─┬─round(exp_smooth, 3)─┬─bar────────┐
1. │ 1 │ 0 │ 1 │ ██████████ │
2. │ 0 │ 1 │ 0.905 │ █████████ │
3. │ 0 │ 2 │ 0.819 │ ████████▏ │
4. │ 0 │ 3 │ 0.741 │ ███████▍ │
5. │ 0 │ 4 │ 0.67 │ ██████▋ │
6. │ 0 │ 5 │ 0.607 │ ██████ │
7. │ 0 │ 6 │ 0.549 │ █████▍ │
8. │ 0 │ 7 │ 0.497 │ ████▉ │
9. │ 0 │ 8 │ 0.449 │ ████▍ │
10. │ 0 │ 9 │ 0.407 │ ████ │
11. │ 0 │ 10 │ 0.368 │ ███▋ │
12. │ 0 │ 11 │ 0.333 │ ███▎ │
13. │ 0 │ 12 │ 0.301 │ ███ │
14. │ 0 │ 13 │ 0.273 │ ██▋ │
15. │ 0 │ 14 │ 0.247 │ ██▍ │
16. │ 0 │ 15 │ 0.223 │ ██▏ │
17. │ 0 │ 16 │ 0.202 │ ██ │
18. │ 0 │ 17 │ 0.183 │ █▊ │
19. │ 0 │ 18 │ 0.165 │ █▋ │
20. │ 0 │ 19 │ 0.15 │ █▍ │
21. │ 0 │ 20 │ 0.135 │ █▎ │
22. │ 0 │ 21 │ 0.122 │ █▏ │
23. │ 0 │ 22 │ 0.111 │ █ │
24. │ 0 │ 23 │ 0.1 │ █ │
25. │ 0 │ 24 │ 0.091 │ ▉ │
26. │ 1 │ 25 │ 1 │ ██████████ │
27. │ 1 │ 26 │ 1 │ ██████████ │
28. │ 1 │ 27 │ 1 │ ██████████ │
29. │ 1 │ 28 │ 1 │ ██████████ │
30. │ 1 │ 29 │ 1 │ ██████████ │
31. │ 1 │ 30 │ 1 │ ██████████ │
32. │ 1 │ 31 │ 1 │ ██████████ │
33. │ 1 │ 32 │ 1 │ ██████████ │
34. │ 1 │ 33 │ 1 │ ██████████ │
35. │ 1 │ 34 │ 1 │ ██████████ │
36. │ 1 │ 35 │ 1 │ ██████████ │
37. │ 1 │ 36 │ 1 │ ██████████ │
38. │ 1 │ 37 │ 1 │ ██████████ │
39. │ 1 │ 38 │ 1 │ ██████████ │
40. │ 1 │ 39 │ 1 │ ██████████ │
41. │ 1 │ 40 │ 1 │ ██████████ │
42. │ 1 │ 41 │ 1 │ ██████████ │
43. │ 1 │ 42 │ 1 │ ██████████ │
44. │ 1 │ 43 │ 1 │ ██████████ │
45. │ 1 │ 44 │ 1 │ ██████████ │
46. │ 1 │ 45 │ 1 │ ██████████ │
47. │ 1 │ 46 │ 1 │ ██████████ │
48. │ 1 │ 47 │ 1 │ ██████████ │
49. │ 1 │ 48 │ 1 │ ██████████ │
50. │ 1 │ 49 │ 1 │ ██████████ │
└───────┴──────┴──────────────────────┴────────────┘
```

105
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---
slug: /en/sql-reference/aggregate-functions/reference/exponentialTimeDecayedSum
sidebar_position: 136
title: exponentialTimeDecayedSum
---
## exponentialTimeDecayedSum
Returns the sum of exponentially smoothed moving average values of a time series at the index `t` in time.
**Syntax**
```sql
exponentialTimeDecayedSum(x)(v, t)
```
**Arguments**
- `v` — Value. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
- `t` — Time. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md), [DateTime](../../data-types/datetime.md), [DateTime64](../../data-types/datetime64.md).
**Parameters**
- `x` — Half-life period. [Integer](../../../sql-reference/data-types/int-uint.md), [Float](../../../sql-reference/data-types/float.md) or [Decimal](../../../sql-reference/data-types/decimal.md).
**Returned values**
- Returns the sum of exponentially smoothed moving average values at the given point in time. [Float64](../../data-types/float.md).
**Example**
Query:
```sql
SELECT
value,
time,
round(exp_smooth, 3),
bar(exp_smooth, 0, 10, 50) AS bar
FROM
(
SELECT
(number = 0) OR (number >= 25) AS value,
number AS time,
exponentialTimeDecayedSum(10)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth
FROM numbers(50)
);
```
Result:
```response
┌─value─┬─time─┬─round(exp_smooth, 3)─┬─bar───────────────────────────────────────────────┐
1. │ 1 │ 0 │ 1 │ █████ │
2. │ 0 │ 1 │ 0.905 │ ████▌ │
3. │ 0 │ 2 │ 0.819 │ ████ │
4. │ 0 │ 3 │ 0.741 │ ███▋ │
5. │ 0 │ 4 │ 0.67 │ ███▎ │
6. │ 0 │ 5 │ 0.607 │ ███ │
7. │ 0 │ 6 │ 0.549 │ ██▋ │
8. │ 0 │ 7 │ 0.497 │ ██▍ │
9. │ 0 │ 8 │ 0.449 │ ██▏ │
10. │ 0 │ 9 │ 0.407 │ ██ │
11. │ 0 │ 10 │ 0.368 │ █▊ │
12. │ 0 │ 11 │ 0.333 │ █▋ │
13. │ 0 │ 12 │ 0.301 │ █▌ │
14. │ 0 │ 13 │ 0.273 │ █▎ │
15. │ 0 │ 14 │ 0.247 │ █▏ │
16. │ 0 │ 15 │ 0.223 │ █ │
17. │ 0 │ 16 │ 0.202 │ █ │
18. │ 0 │ 17 │ 0.183 │ ▉ │
19. │ 0 │ 18 │ 0.165 │ ▊ │
20. │ 0 │ 19 │ 0.15 │ ▋ │
21. │ 0 │ 20 │ 0.135 │ ▋ │
22. │ 0 │ 21 │ 0.122 │ ▌ │
23. │ 0 │ 22 │ 0.111 │ ▌ │
24. │ 0 │ 23 │ 0.1 │ ▌ │
25. │ 0 │ 24 │ 0.091 │ ▍ │
26. │ 1 │ 25 │ 1.082 │ █████▍ │
27. │ 1 │ 26 │ 1.979 │ █████████▉ │
28. │ 1 │ 27 │ 2.791 │ █████████████▉ │
29. │ 1 │ 28 │ 3.525 │ █████████████████▋ │
30. │ 1 │ 29 │ 4.19 │ ████████████████████▉ │
31. │ 1 │ 30 │ 4.791 │ ███████████████████████▉ │
32. │ 1 │ 31 │ 5.335 │ ██████████████████████████▋ │
33. │ 1 │ 32 │ 5.827 │ █████████████████████████████▏ │
34. │ 1 │ 33 │ 6.273 │ ███████████████████████████████▎ │
35. │ 1 │ 34 │ 6.676 │ █████████████████████████████████▍ │
36. │ 1 │ 35 │ 7.041 │ ███████████████████████████████████▏ │
37. │ 1 │ 36 │ 7.371 │ ████████████████████████████████████▊ │
38. │ 1 │ 37 │ 7.669 │ ██████████████████████████████████████▎ │
39. │ 1 │ 38 │ 7.939 │ ███████████████████████████████████████▋ │
40. │ 1 │ 39 │ 8.184 │ ████████████████████████████████████████▉ │
41. │ 1 │ 40 │ 8.405 │ ██████████████████████████████████████████ │
42. │ 1 │ 41 │ 8.605 │ ███████████████████████████████████████████ │
43. │ 1 │ 42 │ 8.786 │ ███████████████████████████████████████████▉ │
44. │ 1 │ 43 │ 8.95 │ ████████████████████████████████████████████▊ │
45. │ 1 │ 44 │ 9.098 │ █████████████████████████████████████████████▍ │
46. │ 1 │ 45 │ 9.233 │ ██████████████████████████████████████████████▏ │
47. │ 1 │ 46 │ 9.354 │ ██████████████████████████████████████████████▊ │
48. │ 1 │ 47 │ 9.464 │ ███████████████████████████████████████████████▎ │
49. │ 1 │ 48 │ 9.563 │ ███████████████████████████████████████████████▊ │
50. │ 1 │ 49 │ 9.653 │ ████████████████████████████████████████████████▎ │
└───────┴──────┴──────────────────────┴───────────────────────────────────────────────────┘
```

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---
slug: /en/sql-reference/aggregate-functions/reference/first_value
sidebar_position: 7
sidebar_position: 137
---
# first_value

4
docs/en/sql-reference/aggregate-functions/reference/flame_graph.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/flamegraph
sidebar_position: 110
slug: /en/sql-reference/aggregate-functions/reference/flame_graph
sidebar_position: 138
---
# flameGraph

2
docs/en/sql-reference/aggregate-functions/reference/grouparray.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparray
sidebar_position: 110
sidebar_position: 139
---
# groupArray

2
docs/en/sql-reference/aggregate-functions/reference/grouparrayinsertat.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparrayinsertat
sidebar_position: 112
sidebar_position: 140
---
# groupArrayInsertAt

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparrayintersect
sidebar_position: 115
sidebar_position: 141
---
# groupArrayIntersect

2
docs/en/sql-reference/aggregate-functions/reference/grouparraylast.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparraylast
sidebar_position: 110
sidebar_position: 142
---
# groupArrayLast

2
docs/en/sql-reference/aggregate-functions/reference/grouparraymovingavg.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparraymovingavg
sidebar_position: 114
sidebar_position: 143
---
# groupArrayMovingAvg

2
docs/en/sql-reference/aggregate-functions/reference/grouparraymovingsum.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparraymovingsum
sidebar_position: 113
sidebar_position: 144
---
# groupArrayMovingSum

2
docs/en/sql-reference/aggregate-functions/reference/grouparraysample.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/grouparraysample
sidebar_position: 114
sidebar_position: 145
---
# groupArraySample

7
docs/en/sql-reference/aggregate-functions/reference/grouparraysorted.md
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@ -1,6 +1,7 @@
---
toc_priority: 112
---
---
slug: /en/sql-reference/aggregate-functions/reference/grouparraysorted
sidebar_position: 146
---
# groupArraySorted {#groupArraySorted}

2
docs/en/sql-reference/aggregate-functions/reference/groupbitand.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitand
sidebar_position: 125
sidebar_position: 147
---
# groupBitAnd

2
docs/en/sql-reference/aggregate-functions/reference/groupbitmap.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitmap
sidebar_position: 128
sidebar_position: 148
---
# groupBitmap

2
docs/en/sql-reference/aggregate-functions/reference/groupbitmapand.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitmapand
sidebar_position: 129
sidebar_position: 149
title: groupBitmapAnd
---

2
docs/en/sql-reference/aggregate-functions/reference/groupbitmapor.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitmapor
sidebar_position: 130
sidebar_position: 150
title: groupBitmapOr
---

2
docs/en/sql-reference/aggregate-functions/reference/groupbitmapxor.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitmapxor
sidebar_position: 131
sidebar_position: 151
title: groupBitmapXor
---

2
docs/en/sql-reference/aggregate-functions/reference/groupbitor.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitor
sidebar_position: 126
sidebar_position: 152
---
# groupBitOr

2
docs/en/sql-reference/aggregate-functions/reference/groupbitxor.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupbitxor
sidebar_position: 127
sidebar_position: 153
---
# groupBitXor

2
docs/en/sql-reference/aggregate-functions/reference/groupuniqarray.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/groupuniqarray
sidebar_position: 111
sidebar_position: 154
---
# groupUniqArray

2
docs/en/sql-reference/aggregate-functions/reference/intervalLengthSum.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/intervalLengthSum
sidebar_position: 146
sidebar_position: 155
sidebar_label: intervalLengthSum
title: intervalLengthSum
---

2
docs/en/sql-reference/aggregate-functions/reference/kolmogorovsmirnovtest.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/kolmogorovsmirnovtest
sidebar_position: 300
sidebar_position: 156
sidebar_label: kolmogorovSmirnovTest
---

2
docs/en/sql-reference/aggregate-functions/reference/kurtpop.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/kurtpop
sidebar_position: 153
sidebar_position: 157
---
# kurtPop

2
docs/en/sql-reference/aggregate-functions/reference/kurtsamp.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/kurtsamp
sidebar_position: 154
sidebar_position: 158
---
# kurtSamp

2
docs/en/sql-reference/aggregate-functions/reference/largestTriangleThreeBuckets.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/largestTriangleThreeBuckets
sidebar_position: 312
sidebar_position: 159
sidebar_label: largestTriangleThreeBuckets
---

2
docs/en/sql-reference/aggregate-functions/reference/last_value.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/last_value
sidebar_position: 8
sidebar_position: 160
---
# last_value

2
docs/en/sql-reference/aggregate-functions/reference/mannwhitneyutest.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/mannwhitneyutest
sidebar_position: 310
sidebar_position: 161
sidebar_label: mannWhitneyUTest
---

2
docs/en/sql-reference/aggregate-functions/reference/max.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/max
sidebar_position: 3
sidebar_position: 162
title: max
---

2
docs/en/sql-reference/aggregate-functions/reference/maxintersections.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/maxintersections
sidebar_position: 360
sidebar_position: 163
title: maxIntersections
---

2
docs/en/sql-reference/aggregate-functions/reference/maxintersectionsposition.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/maxintersectionsposition
sidebar_position: 361
sidebar_position: 164
title: maxIntersectionsPosition
---

2
docs/en/sql-reference/aggregate-functions/reference/maxmap.md
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/maxmap
sidebar_position: 143
sidebar_position: 165
---
# maxMap

2
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@ -1,6 +1,6 @@
---
slug: /en/sql-reference/aggregate-functions/reference/meanztest
sidebar_position: 303
sidebar_position: 166
sidebar_label: meanZTest
---

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