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Alexander Kuzmenkov 2020-11-17 22:54:54 +03:00
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path = contrib/croaring
url = https://github.com/RoaringBitmap/CRoaring
branch = v0.2.66
[submodule "contrib/miniselect"]
path = contrib/miniselect
url = https://github.com/danlark1/miniselect
[submodule "contrib/rocksdb"]
path = contrib/rocksdb
url = https://github.com/facebook/rocksdb
branch = v6.11.4
[submodule "contrib/xz"]
path = contrib/xz
url = https://github.com/xz-mirror/xz

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## ClickHouse release 20.11
### ClickHouse release v20.11.3.3-stable, 2020-11-13
#### Bug Fix
* Fix rare silent crashes when query profiler is on and ClickHouse is installed on OS with glibc version that has (supposedly) broken asynchronous unwind tables for some functions. This fixes [#15301](https://github.com/ClickHouse/ClickHouse/issues/15301). This fixes [#13098](https://github.com/ClickHouse/ClickHouse/issues/13098). [#16846](https://github.com/ClickHouse/ClickHouse/pull/16846) ([alexey-milovidov](https://github.com/alexey-milovidov)).
### ClickHouse release v20.11.2.1, 2020-11-11
#### Backward Incompatible Change
* If some `profile` was specified in `distributed_ddl` config section, then this profile could overwrite settings of `default` profile on server startup. It's fixed, now settings of distributed DDL queries should not affect global server settings. [#16635](https://github.com/ClickHouse/ClickHouse/pull/16635) ([tavplubix](https://github.com/tavplubix)).
* Restrict to use of non-comparable data types (like `AggregateFunction`) in keys (Sorting key, Primary key, Partition key, and so on). [#16601](https://github.com/ClickHouse/ClickHouse/pull/16601) ([alesapin](https://github.com/alesapin)).
* Remove `ANALYZE` and `AST` queries, and make the setting `enable_debug_queries` obsolete since now it is the part of full featured `EXPLAIN` query. [#16536](https://github.com/ClickHouse/ClickHouse/pull/16536) ([Ivan](https://github.com/abyss7)).
* Aggregate functions `boundingRatio`, `rankCorr`, `retention`, `timeSeriesGroupSum`, `timeSeriesGroupRateSum`, `windowFunnel` were erroneously made case-insensitive. Now their names are made case sensitive as designed. Only functions that are specified in SQL standard or made for compatibility with other DBMS or functions similar to those should be case-insensitive. [#16407](https://github.com/ClickHouse/ClickHouse/pull/16407) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Make `rankCorr` function return nan on insufficient data https://github.com/ClickHouse/ClickHouse/issues/16124. [#16135](https://github.com/ClickHouse/ClickHouse/pull/16135) ([hexiaoting](https://github.com/hexiaoting)).
#### New Feature
* Added support of LDAP as a user directory for locally non-existent users. [#12736](https://github.com/ClickHouse/ClickHouse/pull/12736) ([Denis Glazachev](https://github.com/traceon)).
* Add `system.replicated_fetches` table which shows currently running background fetches. [#16428](https://github.com/ClickHouse/ClickHouse/pull/16428) ([alesapin](https://github.com/alesapin)).
* Added setting `date_time_output_format`. [#15845](https://github.com/ClickHouse/ClickHouse/pull/15845) ([Maksim Kita](https://github.com/kitaisreal)).
* Added minimal web UI to ClickHouse. [#16158](https://github.com/ClickHouse/ClickHouse/pull/16158) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Allows to read/write Single protobuf message at once (w/o length-delimiters). [#15199](https://github.com/ClickHouse/ClickHouse/pull/15199) ([filimonov](https://github.com/filimonov)).
* Added initial OpenTelemetry support. ClickHouse now accepts OpenTelemetry traceparent headers over Native and HTTP protocols, and passes them downstream in some cases. The trace spans for executed queries are saved into the `system.opentelemetry_span_log` table. [#14195](https://github.com/ClickHouse/ClickHouse/pull/14195) ([Alexander Kuzmenkov](https://github.com/akuzm)).
* Allow specify primary key in column list of `CREATE TABLE` query. This is needed for compatibility with other SQL dialects. [#15823](https://github.com/ClickHouse/ClickHouse/pull/15823) ([Maksim Kita](https://github.com/kitaisreal)).
* Implement `OFFSET offset_row_count {ROW | ROWS} FETCH {FIRST | NEXT} fetch_row_count {ROW | ROWS} {ONLY | WITH TIES}` in SELECT query with ORDER BY. This is the SQL-standard way to specify `LIMIT`. [#15855](https://github.com/ClickHouse/ClickHouse/pull/15855) ([hexiaoting](https://github.com/hexiaoting)).
* `errorCodeToName` function - return variable name of the error (useful for analyzing query_log and similar). `system.errors` table - shows how many times errors has been happened (respects `system_events_show_zero_values`). [#16438](https://github.com/ClickHouse/ClickHouse/pull/16438) ([Azat Khuzhin](https://github.com/azat)).
* Added function `untuple` which is a special function which can introduce new columns to the SELECT list by expanding a named tuple. [#16242](https://github.com/ClickHouse/ClickHouse/pull/16242) ([Nikolai Kochetov](https://github.com/KochetovNicolai), [Amos Bird](https://github.com/amosbird)).
* Now we can provide identifiers via query parameters. And these parameters can be used as table objects or columns. [#16594](https://github.com/ClickHouse/ClickHouse/pull/16594) ([Amos Bird](https://github.com/amosbird)).
* Added big integers (UInt256, Int128, Int256) and UUID data types support for MergeTree BloomFilter index. Big integers is an experimental feature. [#16642](https://github.com/ClickHouse/ClickHouse/pull/16642) ([Maksim Kita](https://github.com/kitaisreal)).
* Add `farmFingerprint64` function (non-cryptographic string hashing). [#16570](https://github.com/ClickHouse/ClickHouse/pull/16570) ([Jacob Hayes](https://github.com/JacobHayes)).
* Add `log_queries_min_query_duration_ms`, only queries slower then the value of this setting will go to `query_log`/`query_thread_log` (i.e. something like `slow_query_log` in mysql). [#16529](https://github.com/ClickHouse/ClickHouse/pull/16529) ([Azat Khuzhin](https://github.com/azat)).
* Ability to create a docker image on the top of `Alpine`. Uses precompiled binary and glibc components from ubuntu 20.04. [#16479](https://github.com/ClickHouse/ClickHouse/pull/16479) ([filimonov](https://github.com/filimonov)).
* Added `toUUIDOrNull`, `toUUIDOrZero` cast functions. [#16337](https://github.com/ClickHouse/ClickHouse/pull/16337) ([Maksim Kita](https://github.com/kitaisreal)).
* Add `max_concurrent_queries_for_all_users` setting, see [#6636](https://github.com/ClickHouse/ClickHouse/issues/6636) for use cases. [#16154](https://github.com/ClickHouse/ClickHouse/pull/16154) ([nvartolomei](https://github.com/nvartolomei)).
* Add a new option `print_query_id` to clickhouse-client. It helps generate arbitrary strings with the current query id generated by the client. Also print query id in clickhouse-client by default. [#15809](https://github.com/ClickHouse/ClickHouse/pull/15809) ([Amos Bird](https://github.com/amosbird)).
* Add `tid` and `logTrace` functions. This closes [#9434](https://github.com/ClickHouse/ClickHouse/issues/9434). [#15803](https://github.com/ClickHouse/ClickHouse/pull/15803) ([flynn](https://github.com/ucasFL)).
* Add function `formatReadableTimeDelta` that format time delta to human readable string ... [#15497](https://github.com/ClickHouse/ClickHouse/pull/15497) ([Filipe Caixeta](https://github.com/filipecaixeta)).
* Added `disable_merges` option for volumes in multi-disk configuration. [#13956](https://github.com/ClickHouse/ClickHouse/pull/13956) ([Vladimir Chebotarev](https://github.com/excitoon)).
#### Experimental Feature
* New functions `encrypt`, `aes_encrypt_mysql`, `decrypt`, `aes_decrypt_mysql`. These functions are working slowly, so we consider it as an experimental feature. [#11844](https://github.com/ClickHouse/ClickHouse/pull/11844) ([Vasily Nemkov](https://github.com/Enmk)).
#### Bug Fix
* Mask password in data_path in the `system.distribution_queue`. [#16727](https://github.com/ClickHouse/ClickHouse/pull/16727) ([Azat Khuzhin](https://github.com/azat)).
* Fix `IN` operator over several columns and tuples with enabled `transform_null_in` setting. Fixes [#15310](https://github.com/ClickHouse/ClickHouse/issues/15310). [#16722](https://github.com/ClickHouse/ClickHouse/pull/16722) ([Anton Popov](https://github.com/CurtizJ)).
* The setting `max_parallel_replicas` worked incorrectly if the queried table has no sampling. This fixes [#5733](https://github.com/ClickHouse/ClickHouse/issues/5733). [#16675](https://github.com/ClickHouse/ClickHouse/pull/16675) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix optimize_read_in_order/optimize_aggregation_in_order with max_threads > 0 and expression in ORDER BY. [#16637](https://github.com/ClickHouse/ClickHouse/pull/16637) ([Azat Khuzhin](https://github.com/azat)).
* Calculation of `DEFAULT` expressions was involving possible name collisions (that was very unlikely to encounter). This fixes [#9359](https://github.com/ClickHouse/ClickHouse/issues/9359). [#16612](https://github.com/ClickHouse/ClickHouse/pull/16612) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix `query_thread_log.query_duration_ms` unit. [#16563](https://github.com/ClickHouse/ClickHouse/pull/16563) ([Azat Khuzhin](https://github.com/azat)).
* Fix a bug when using MySQL Master -> MySQL Slave -> ClickHouse MaterializeMySQL Engine. `MaterializeMySQL` is an experimental feature. [#16504](https://github.com/ClickHouse/ClickHouse/pull/16504) ([TCeason](https://github.com/TCeason)).
* Specifically crafted argument of `round` function with `Decimal` was leading to integer division by zero. This fixes [#13338](https://github.com/ClickHouse/ClickHouse/issues/13338). [#16451](https://github.com/ClickHouse/ClickHouse/pull/16451) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix DROP TABLE for Distributed (racy with INSERT). [#16409](https://github.com/ClickHouse/ClickHouse/pull/16409) ([Azat Khuzhin](https://github.com/azat)).
* Fix processing of very large entries in replication queue. Very large entries may appear in ALTER queries if table structure is extremely large (near 1 MB). This fixes [#16307](https://github.com/ClickHouse/ClickHouse/issues/16307). [#16332](https://github.com/ClickHouse/ClickHouse/pull/16332) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fixed the inconsistent behaviour when a part of return data could be dropped because the set for its filtration wasn't created. [#16308](https://github.com/ClickHouse/ClickHouse/pull/16308) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fix dictGet in sharding_key (and similar places, i.e. when the function context is stored permanently). [#16205](https://github.com/ClickHouse/ClickHouse/pull/16205) ([Azat Khuzhin](https://github.com/azat)).
* Fix the exception thrown in `clickhouse-local` when trying to execute `OPTIMIZE` command. Fixes [#16076](https://github.com/ClickHouse/ClickHouse/issues/16076). [#16192](https://github.com/ClickHouse/ClickHouse/pull/16192) ([filimonov](https://github.com/filimonov)).
* Fixes [#15780](https://github.com/ClickHouse/ClickHouse/issues/15780) regression, e.g. `indexOf([1, 2, 3], toLowCardinality(1))` now is prohibited but it should not be. [#16038](https://github.com/ClickHouse/ClickHouse/pull/16038) ([Mike](https://github.com/myrrc)).
* Fix bug with MySQL database. When MySQL server used as database engine is down some queries raise Exception, because they try to get tables from disabled server, while it's unnecessary. For example, query `SELECT ... FROM system.parts` should work only with MergeTree tables and don't touch MySQL database at all. [#16032](https://github.com/ClickHouse/ClickHouse/pull/16032) ([Kruglov Pavel](https://github.com/Avogar)).
* Now exception will be thrown when `ALTER MODIFY COLUMN ... DEFAULT ...` has incompatible default with column type. Fixes [#15854](https://github.com/ClickHouse/ClickHouse/issues/15854). [#15858](https://github.com/ClickHouse/ClickHouse/pull/15858) ([alesapin](https://github.com/alesapin)).
* Fixed IPv4CIDRToRange/IPv6CIDRToRange functions to accept const IP-column values. [#15856](https://github.com/ClickHouse/ClickHouse/pull/15856) ([vladimir-golovchenko](https://github.com/vladimir-golovchenko)).
#### Improvement
* Treat `INTERVAL '1 hour'` as equivalent to `INTERVAL 1 HOUR`, to be compatible with Postgres and similar. This fixes [#15637](https://github.com/ClickHouse/ClickHouse/issues/15637). [#15978](https://github.com/ClickHouse/ClickHouse/pull/15978) ([flynn](https://github.com/ucasFL)).
* Enable parsing enum values by their numeric ids for CSV, TSV and JSON input formats. [#15685](https://github.com/ClickHouse/ClickHouse/pull/15685) ([vivarum](https://github.com/vivarum)).
* Better read task scheduling for JBOD architecture and `MergeTree` storage. New setting `read_backoff_min_concurrency` which serves as the lower limit to the number of reading threads. [#16423](https://github.com/ClickHouse/ClickHouse/pull/16423) ([Amos Bird](https://github.com/amosbird)).
* Add missing support for `LowCardinality` in `Avro` format. [#16521](https://github.com/ClickHouse/ClickHouse/pull/16521) ([Mike](https://github.com/myrrc)).
* Workaround for use `S3` with nginx server as proxy. Nginx currenty does not accept urls with empty path like `http://domain.com?delete`, but vanilla aws-sdk-cpp produces this kind of urls. This commit uses patched aws-sdk-cpp version, which makes urls with "/" as path in this cases, like `http://domain.com/?delete`. [#16814](https://github.com/ClickHouse/ClickHouse/pull/16814) ([ianton-ru](https://github.com/ianton-ru)).
* Better diagnostics on parse errors in input data. Provide row number on `Cannot read all data` errors. [#16644](https://github.com/ClickHouse/ClickHouse/pull/16644) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Make the behaviour of `minMap` and `maxMap` more desireable. It will not skip zero values in the result. Fixes [#16087](https://github.com/ClickHouse/ClickHouse/issues/16087). [#16631](https://github.com/ClickHouse/ClickHouse/pull/16631) ([Ildus Kurbangaliev](https://github.com/ildus)).
* Better update of ZooKeeper configuration in runtime. [#16630](https://github.com/ClickHouse/ClickHouse/pull/16630) ([sundyli](https://github.com/sundy-li)).
* Apply SETTINGS clause as early as possible. It allows to modify more settings in the query. This closes [#3178](https://github.com/ClickHouse/ClickHouse/issues/3178). [#16619](https://github.com/ClickHouse/ClickHouse/pull/16619) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Now `event_time_microseconds` field stores in Decimal64, not UInt64. [#16617](https://github.com/ClickHouse/ClickHouse/pull/16617) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Now paratmeterized functions can be used in `APPLY` column transformer. [#16589](https://github.com/ClickHouse/ClickHouse/pull/16589) ([Amos Bird](https://github.com/amosbird)).
* Improve scheduling of background task which removes data of dropped tables in `Atomic` databases. `Atomic` databases do not create broken symlink to table data directory if table actually has no data directory. [#16584](https://github.com/ClickHouse/ClickHouse/pull/16584) ([tavplubix](https://github.com/tavplubix)).
* Subqueries in `WITH` section (CTE) can reference previous subqueries in `WITH` section by their name. [#16575](https://github.com/ClickHouse/ClickHouse/pull/16575) ([Amos Bird](https://github.com/amosbird)).
* Add current_database into `system.query_thread_log`. [#16558](https://github.com/ClickHouse/ClickHouse/pull/16558) ([Azat Khuzhin](https://github.com/azat)).
* Allow to fetch parts that are already committed or outdated in the current instance into the detached directory. It's useful when migrating tables from another cluster and having N to 1 shards mapping. It's also consistent with the current fetchPartition implementation. [#16538](https://github.com/ClickHouse/ClickHouse/pull/16538) ([Amos Bird](https://github.com/amosbird)).
* Multiple improvements for `RabbitMQ`: Fixed bug for [#16263](https://github.com/ClickHouse/ClickHouse/issues/16263). Also minimized event loop lifetime. Added more efficient queues setup. [#16426](https://github.com/ClickHouse/ClickHouse/pull/16426) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix debug assertion in `quantileDeterministic` function. In previous version it may also transfer up to two times more data over the network. Although no bug existed. This fixes [#15683](https://github.com/ClickHouse/ClickHouse/issues/15683). [#16410](https://github.com/ClickHouse/ClickHouse/pull/16410) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Add `TablesToDropQueueSize` metric. It's equal to number of dropped tables, that are waiting for background data removal. [#16364](https://github.com/ClickHouse/ClickHouse/pull/16364) ([tavplubix](https://github.com/tavplubix)).
* Better diagnostics when client has dropped connection. In previous versions, `Attempt to read after EOF` and `Broken pipe` exceptions were logged in server. In new version, it's information message `Client has dropped the connection, cancel the query.`. [#16329](https://github.com/ClickHouse/ClickHouse/pull/16329) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Add total_rows/total_bytes (from system.tables) support for Set/Join table engines. [#16306](https://github.com/ClickHouse/ClickHouse/pull/16306) ([Azat Khuzhin](https://github.com/azat)).
* Now it's possible to specify `PRIMARY KEY` without `ORDER BY` for MergeTree table engines family. Closes [#15591](https://github.com/ClickHouse/ClickHouse/issues/15591). [#16284](https://github.com/ClickHouse/ClickHouse/pull/16284) ([alesapin](https://github.com/alesapin)).
* If there is no tmp folder in the system (chroot, misconfigutation etc) `clickhouse-local` will create temporary subfolder in the current directory. [#16280](https://github.com/ClickHouse/ClickHouse/pull/16280) ([filimonov](https://github.com/filimonov)).
* Add support for nested data types (like named tuple) as sub-types. Fixes [#15587](https://github.com/ClickHouse/ClickHouse/issues/15587). [#16262](https://github.com/ClickHouse/ClickHouse/pull/16262) ([Ivan](https://github.com/abyss7)).
* Support for `database_atomic_wait_for_drop_and_detach_synchronously`/`NO DELAY`/`SYNC` for `DROP DATABASE`. [#16127](https://github.com/ClickHouse/ClickHouse/pull/16127) ([Azat Khuzhin](https://github.com/azat)).
* Add `allow_nondeterministic_optimize_skip_unused_shards` (to allow non deterministic like `rand()` or `dictGet()` in sharding key). [#16105](https://github.com/ClickHouse/ClickHouse/pull/16105) ([Azat Khuzhin](https://github.com/azat)).
* Fix `memory_profiler_step`/`max_untracked_memory` for queries via HTTP (test included). Fix the issue that adjusting this value globally in xml config does not help either, since those settings are not applied anyway, only default (4MB) value is [used](https://github.com/ClickHouse/ClickHouse/blob/17731245336d8c84f75e4c0894c5797ed7732190/src/Common/ThreadStatus.h#L104). Fix `query_id` for the most root ThreadStatus of the http query (by initializing QueryScope after reading query_id). [#16101](https://github.com/ClickHouse/ClickHouse/pull/16101) ([Azat Khuzhin](https://github.com/azat)).
* Now it's allowed to execute `ALTER ... ON CLUSTER` queries regardless of the `<internal_replication>` setting in cluster config. [#16075](https://github.com/ClickHouse/ClickHouse/pull/16075) ([alesapin](https://github.com/alesapin)).
* Fix rare issue when `clickhouse-client` may abort on exit due to loading of suggestions. This fixes [#16035](https://github.com/ClickHouse/ClickHouse/issues/16035). [#16047](https://github.com/ClickHouse/ClickHouse/pull/16047) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Add support of `cache` layout for `Redis` dictionaries with complex key. [#15985](https://github.com/ClickHouse/ClickHouse/pull/15985) ([Anton Popov](https://github.com/CurtizJ)).
* Fix query hang (endless loop) in case of misconfiguration (`connections_with_failover_max_tries` set to 0). [#15876](https://github.com/ClickHouse/ClickHouse/pull/15876) ([Azat Khuzhin](https://github.com/azat)).
* Change level of some log messages from information to debug, so information messages will not appear for every query. This closes [#5293](https://github.com/ClickHouse/ClickHouse/issues/5293). [#15816](https://github.com/ClickHouse/ClickHouse/pull/15816) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Remove `MemoryTrackingInBackground*` metrics to avoid potentially misleading results. This fixes [#15684](https://github.com/ClickHouse/ClickHouse/issues/15684). [#15813](https://github.com/ClickHouse/ClickHouse/pull/15813) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Add reconnects to `zookeeper-dump-tree` tool. [#15711](https://github.com/ClickHouse/ClickHouse/pull/15711) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Allow explicitly specify columns list in `CREATE TABLE table AS table_function(...)` query. Fixes [#9249](https://github.com/ClickHouse/ClickHouse/issues/9249) Fixes [#14214](https://github.com/ClickHouse/ClickHouse/issues/14214). [#14295](https://github.com/ClickHouse/ClickHouse/pull/14295) ([tavplubix](https://github.com/tavplubix)).
#### Performance Improvement
* Do not merge parts across partitions in SELECT FINAL. [#15938](https://github.com/ClickHouse/ClickHouse/pull/15938) ([Kruglov Pavel](https://github.com/Avogar)).
* Improve performance of `-OrNull` and `-OrDefault` aggregate functions. [#16661](https://github.com/ClickHouse/ClickHouse/pull/16661) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Improve performance of `quantileMerge`. In previous versions it was obnoxiously slow. This closes [#1463](https://github.com/ClickHouse/ClickHouse/issues/1463). [#16643](https://github.com/ClickHouse/ClickHouse/pull/16643) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Improve performance of logical functions a little. [#16347](https://github.com/ClickHouse/ClickHouse/pull/16347) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Improved performance of merges assignment in MergeTree table engines. Shouldn't be visible for the user. [#16191](https://github.com/ClickHouse/ClickHouse/pull/16191) ([alesapin](https://github.com/alesapin)).
* Speedup hashed/sparse_hashed dictionary loading by preallocating the hash table. [#15454](https://github.com/ClickHouse/ClickHouse/pull/15454) ([Azat Khuzhin](https://github.com/azat)).
* Now trivial count optimization becomes slightly non-trivial. Predicates that contain exact partition expr can be optimized too. This also fixes [#11092](https://github.com/ClickHouse/ClickHouse/issues/11092) which returns wrong count when `max_parallel_replicas > 1`. [#15074](https://github.com/ClickHouse/ClickHouse/pull/15074) ([Amos Bird](https://github.com/amosbird)).
#### Build/Testing/Packaging Improvement
* Add flaky check for stateless tests. It will detect potentially flaky functional tests in advance, before they are merged. [#16238](https://github.com/ClickHouse/ClickHouse/pull/16238) ([alesapin](https://github.com/alesapin)).
* Use proper version for `croaring` instead of amalgamation. [#16285](https://github.com/ClickHouse/ClickHouse/pull/16285) ([sundyli](https://github.com/sundy-li)).
* Improve generation of build files for `ya.make` build system (Arcadia). [#16700](https://github.com/ClickHouse/ClickHouse/pull/16700) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Add MySQL BinLog file check tool for `MaterializeMySQL` database engine. `MaterializeMySQL` is an experimental feature. [#16223](https://github.com/ClickHouse/ClickHouse/pull/16223) ([Winter Zhang](https://github.com/zhang2014)).
* Check for executable bit on non-executable files. People often accidentially commit executable files from Windows. [#15843](https://github.com/ClickHouse/ClickHouse/pull/15843) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Check for `#pragma once` in headers. [#15818](https://github.com/ClickHouse/ClickHouse/pull/15818) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix illegal code style `&vector[idx]` in libhdfs3. This fixes libcxx debug build. See also https://github.com/ClickHouse-Extras/libhdfs3/pull/8 . [#15815](https://github.com/ClickHouse/ClickHouse/pull/15815) ([Amos Bird](https://github.com/amosbird)).
* Fix build of one miscellaneous example tool on Mac OS. Note that we don't build examples on Mac OS in our CI (we build only ClickHouse binary), so there is zero chance it will not break again. This fixes [#15804](https://github.com/ClickHouse/ClickHouse/issues/15804). [#15808](https://github.com/ClickHouse/ClickHouse/pull/15808) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Simplify Sys/V init script. [#14135](https://github.com/ClickHouse/ClickHouse/pull/14135) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Added `boost::program_options` to `db_generator` in order to increase its usability. This closes [#15940](https://github.com/ClickHouse/ClickHouse/issues/15940). [#15973](https://github.com/ClickHouse/ClickHouse/pull/15973) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
## ClickHouse release 20.10
### ClickHouse release v20.10.4.1-stable, 2020-11-13
#### Bug Fix
* Fix rare silent crashes when query profiler is on and ClickHouse is installed on OS with glibc version that has (supposedly) broken asynchronous unwind tables for some functions. This fixes [#15301](https://github.com/ClickHouse/ClickHouse/issues/15301). This fixes [#13098](https://github.com/ClickHouse/ClickHouse/issues/13098). [#16846](https://github.com/ClickHouse/ClickHouse/pull/16846) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix `IN` operator over several columns and tuples with enabled `transform_null_in` setting. Fixes [#15310](https://github.com/ClickHouse/ClickHouse/issues/15310). [#16722](https://github.com/ClickHouse/ClickHouse/pull/16722) ([Anton Popov](https://github.com/CurtizJ)).
* This will fix optimize_read_in_order/optimize_aggregation_in_order with max_threads>0 and expression in ORDER BY. [#16637](https://github.com/ClickHouse/ClickHouse/pull/16637) ([Azat Khuzhin](https://github.com/azat)).
* Now when parsing AVRO from input the LowCardinality is removed from type. Fixes [#16188](https://github.com/ClickHouse/ClickHouse/issues/16188). [#16521](https://github.com/ClickHouse/ClickHouse/pull/16521) ([Mike](https://github.com/myrrc)).
* Fix rapid growth of metadata when using MySQL Master -> MySQL Slave -> ClickHouse MaterializeMySQL Engine, and `slave_parallel_worker` enabled on MySQL Slave, by properly shrinking GTID sets. This fixes [#15951](https://github.com/ClickHouse/ClickHouse/issues/15951). [#16504](https://github.com/ClickHouse/ClickHouse/pull/16504) ([TCeason](https://github.com/TCeason)).
* Fix DROP TABLE for Distributed (racy with INSERT). [#16409](https://github.com/ClickHouse/ClickHouse/pull/16409) ([Azat Khuzhin](https://github.com/azat)).
* Fix processing of very large entries in replication queue. Very large entries may appear in ALTER queries if table structure is extremely large (near 1 MB). This fixes [#16307](https://github.com/ClickHouse/ClickHouse/issues/16307). [#16332](https://github.com/ClickHouse/ClickHouse/pull/16332) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix bug with MySQL database. When MySQL server used as database engine is down some queries raise Exception, because they try to get tables from disabled server, while it's unnecessary. For example, query `SELECT ... FROM system.parts` should work only with MergeTree tables and don't touch MySQL database at all. [#16032](https://github.com/ClickHouse/ClickHouse/pull/16032) ([Kruglov Pavel](https://github.com/Avogar)).
#### Improvement
* Workaround for use S3 with nginx server as proxy. Nginx currenty does not accept urls with empty path like http://domain.com?delete, but vanilla aws-sdk-cpp produces this kind of urls. This commit uses patched aws-sdk-cpp version, which makes urls with "/" as path in this cases, like http://domain.com/?delete. [#16813](https://github.com/ClickHouse/ClickHouse/pull/16813) ([ianton-ru](https://github.com/ianton-ru)).
### ClickHouse release v20.10.3.30, 2020-10-28
#### Backward Incompatible Change
@ -212,6 +358,84 @@
## ClickHouse release 20.9
### ClickHouse release v20.9.5.5-stable, 2020-11-13
#### Bug Fix
* Fix rare silent crashes when query profiler is on and ClickHouse is installed on OS with glibc version that has (supposedly) broken asynchronous unwind tables for some functions. This fixes [#15301](https://github.com/ClickHouse/ClickHouse/issues/15301). This fixes [#13098](https://github.com/ClickHouse/ClickHouse/issues/13098). [#16846](https://github.com/ClickHouse/ClickHouse/pull/16846) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Now when parsing AVRO from input the LowCardinality is removed from type. Fixes [#16188](https://github.com/ClickHouse/ClickHouse/issues/16188). [#16521](https://github.com/ClickHouse/ClickHouse/pull/16521) ([Mike](https://github.com/myrrc)).
* Fix rapid growth of metadata when using MySQL Master -> MySQL Slave -> ClickHouse MaterializeMySQL Engine, and `slave_parallel_worker` enabled on MySQL Slave, by properly shrinking GTID sets. This fixes [#15951](https://github.com/ClickHouse/ClickHouse/issues/15951). [#16504](https://github.com/ClickHouse/ClickHouse/pull/16504) ([TCeason](https://github.com/TCeason)).
* Fix DROP TABLE for Distributed (racy with INSERT). [#16409](https://github.com/ClickHouse/ClickHouse/pull/16409) ([Azat Khuzhin](https://github.com/azat)).
* Fix processing of very large entries in replication queue. Very large entries may appear in ALTER queries if table structure is extremely large (near 1 MB). This fixes [#16307](https://github.com/ClickHouse/ClickHouse/issues/16307). [#16332](https://github.com/ClickHouse/ClickHouse/pull/16332) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fixed the inconsistent behaviour when a part of return data could be dropped because the set for its filtration wasn't created. [#16308](https://github.com/ClickHouse/ClickHouse/pull/16308) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fix bug with MySQL database. When MySQL server used as database engine is down some queries raise Exception, because they try to get tables from disabled server, while it's unnecessary. For example, query `SELECT ... FROM system.parts` should work only with MergeTree tables and don't touch MySQL database at all. [#16032](https://github.com/ClickHouse/ClickHouse/pull/16032) ([Kruglov Pavel](https://github.com/Avogar)).
### ClickHouse release v20.9.4.76-stable (2020-10-29)
#### Bug Fix
* Fix double free in case of exception in function `dictGet`. It could have happened if dictionary was loaded with error. [#16429](https://github.com/ClickHouse/ClickHouse/pull/16429) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix group by with totals/rollup/cube modifers and min/max functions over group by keys. Fixes [#16393](https://github.com/ClickHouse/ClickHouse/issues/16393). [#16397](https://github.com/ClickHouse/ClickHouse/pull/16397) ([Anton Popov](https://github.com/CurtizJ)).
* Fix async Distributed INSERT w/ prefer_localhost_replica=0 and internal_replication. [#16358](https://github.com/ClickHouse/ClickHouse/pull/16358) ([Azat Khuzhin](https://github.com/azat)).
* Fix a very wrong code in TwoLevelStringHashTable implementation, which might lead to memory leak. I'm suprised how this bug can lurk for so long.... [#16264](https://github.com/ClickHouse/ClickHouse/pull/16264) ([Amos Bird](https://github.com/amosbird)).
* Fix the case when memory can be overallocated regardless to the limit. This closes [#14560](https://github.com/ClickHouse/ClickHouse/issues/14560). [#16206](https://github.com/ClickHouse/ClickHouse/pull/16206) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix `ALTER MODIFY ... ORDER BY` query hang for `ReplicatedVersionedCollapsingMergeTree`. This fixes [#15980](https://github.com/ClickHouse/ClickHouse/issues/15980). [#16011](https://github.com/ClickHouse/ClickHouse/pull/16011) ([alesapin](https://github.com/alesapin)).
* Fix collate name & charset name parser and support `length = 0` for string type. [#16008](https://github.com/ClickHouse/ClickHouse/pull/16008) ([Winter Zhang](https://github.com/zhang2014)).
* Allow to use direct layout for dictionaries with complex keys. [#16007](https://github.com/ClickHouse/ClickHouse/pull/16007) ([Anton Popov](https://github.com/CurtizJ)).
* Prevent replica hang for 5-10 mins when replication error happens after a period of inactivity. [#15987](https://github.com/ClickHouse/ClickHouse/pull/15987) ([filimonov](https://github.com/filimonov)).
* Fix rare segfaults when inserting into or selecting from MaterializedView and concurrently dropping target table (for Atomic database engine). [#15984](https://github.com/ClickHouse/ClickHouse/pull/15984) ([tavplubix](https://github.com/tavplubix)).
* Fix ambiguity in parsing of settings profiles: `CREATE USER ... SETTINGS profile readonly` is now considered as using a profile named `readonly`, not a setting named `profile` with the readonly constraint. This fixes https://github.com/ClickHouse/ClickHouse/issues/15628. [#15982](https://github.com/ClickHouse/ClickHouse/pull/15982) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix a crash when database creation fails. [#15954](https://github.com/ClickHouse/ClickHouse/pull/15954) ([Winter Zhang](https://github.com/zhang2014)).
* Fixed `DROP TABLE IF EXISTS` failure with `Table ... doesn't exist` error when table is concurrently renamed (for Atomic database engine). Fixed rare deadlock when concurrently executing some DDL queries with multiple tables (like `DROP DATABASE` and `RENAME TABLE`) Fixed `DROP/DETACH DATABASE` failure with `Table ... doesn't exist` when concurrently executing `DROP/DETACH TABLE`. [#15934](https://github.com/ClickHouse/ClickHouse/pull/15934) ([tavplubix](https://github.com/tavplubix)).
* Fix incorrect empty result for query from `Distributed` table if query has `WHERE`, `PREWHERE` and `GLOBAL IN`. Fixes [#15792](https://github.com/ClickHouse/ClickHouse/issues/15792). [#15933](https://github.com/ClickHouse/ClickHouse/pull/15933) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix possible deadlocks in RBAC. [#15875](https://github.com/ClickHouse/ClickHouse/pull/15875) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix exception `Block structure mismatch` in `SELECT ... ORDER BY DESC` queries which were executed after `ALTER MODIFY COLUMN` query. Fixes [#15800](https://github.com/ClickHouse/ClickHouse/issues/15800). [#15852](https://github.com/ClickHouse/ClickHouse/pull/15852) ([alesapin](https://github.com/alesapin)).
* Fix `select count()` inaccuracy for MaterializeMySQL. [#15767](https://github.com/ClickHouse/ClickHouse/pull/15767) ([tavplubix](https://github.com/tavplubix)).
* Fix some cases of queries, in which only virtual columns are selected. Previously `Not found column _nothing in block` exception may be thrown. Fixes [#12298](https://github.com/ClickHouse/ClickHouse/issues/12298). [#15756](https://github.com/ClickHouse/ClickHouse/pull/15756) ([Anton Popov](https://github.com/CurtizJ)).
* Fixed too low default value of `max_replicated_logs_to_keep` setting, which might cause replicas to become lost too often. Improve lost replica recovery process by choosing the most up-to-date replica to clone. Also do not remove old parts from lost replica, detach them instead. [#15701](https://github.com/ClickHouse/ClickHouse/pull/15701) ([tavplubix](https://github.com/tavplubix)).
* Fix error `Cannot add simple transform to empty Pipe` which happened while reading from `Buffer` table which has different structure than destination table. It was possible if destination table returned empty result for query. Fixes [#15529](https://github.com/ClickHouse/ClickHouse/issues/15529). [#15662](https://github.com/ClickHouse/ClickHouse/pull/15662) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed bug with globs in S3 table function, region from URL was not applied to S3 client configuration. [#15646](https://github.com/ClickHouse/ClickHouse/pull/15646) ([Vladimir Chebotarev](https://github.com/excitoon)).
* Decrement the `ReadonlyReplica` metric when detaching read-only tables. This fixes https://github.com/ClickHouse/ClickHouse/issues/15598. [#15592](https://github.com/ClickHouse/ClickHouse/pull/15592) ([sundyli](https://github.com/sundy-li)).
* Throw an error when a single parameter is passed to ReplicatedMergeTree instead of ignoring it. [#15516](https://github.com/ClickHouse/ClickHouse/pull/15516) ([nvartolomei](https://github.com/nvartolomei)).
#### Improvement
* Now it's allowed to execute `ALTER ... ON CLUSTER` queries regardless of the `<internal_replication>` setting in cluster config. [#16075](https://github.com/ClickHouse/ClickHouse/pull/16075) ([alesapin](https://github.com/alesapin)).
* Unfold `{database}`, `{table}` and `{uuid}` macros in `ReplicatedMergeTree` arguments on table creation. [#16160](https://github.com/ClickHouse/ClickHouse/pull/16160) ([tavplubix](https://github.com/tavplubix)).
### ClickHouse release v20.9.3.45-stable (2020-10-09)
#### Bug Fix
* Fix error `Cannot find column` which may happen at insertion into `MATERIALIZED VIEW` in case if query for `MV` containes `ARRAY JOIN`. [#15717](https://github.com/ClickHouse/ClickHouse/pull/15717) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix race condition in AMQP-CPP. [#15667](https://github.com/ClickHouse/ClickHouse/pull/15667) ([alesapin](https://github.com/alesapin)).
* Fix the order of destruction for resources in `ReadFromStorage` step of query plan. It might cause crashes in rare cases. Possibly connected with [#15610](https://github.com/ClickHouse/ClickHouse/issues/15610). [#15645](https://github.com/ClickHouse/ClickHouse/pull/15645) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed `Element ... is not a constant expression` error when using `JSON*` function result in `VALUES`, `LIMIT` or right side of `IN` operator. [#15589](https://github.com/ClickHouse/ClickHouse/pull/15589) ([tavplubix](https://github.com/tavplubix)).
* Prevent the possibility of error message `Could not calculate available disk space (statvfs), errno: 4, strerror: Interrupted system call`. This fixes [#15541](https://github.com/ClickHouse/ClickHouse/issues/15541). [#15557](https://github.com/ClickHouse/ClickHouse/pull/15557) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Significantly reduce memory usage in AggregatingInOrderTransform/optimize_aggregation_in_order. [#15543](https://github.com/ClickHouse/ClickHouse/pull/15543) ([Azat Khuzhin](https://github.com/azat)).
* Mutation might hang waiting for some non-existent part after `MOVE` or `REPLACE PARTITION` or, in rare cases, after `DETACH` or `DROP PARTITION`. It's fixed. [#15537](https://github.com/ClickHouse/ClickHouse/pull/15537) ([tavplubix](https://github.com/tavplubix)).
* Fix bug when `ILIKE` operator stops being case insensitive if `LIKE` with the same pattern was executed. [#15536](https://github.com/ClickHouse/ClickHouse/pull/15536) ([alesapin](https://github.com/alesapin)).
* Fix `Missing columns` errors when selecting columns which absent in data, but depend on other columns which also absent in data. Fixes [#15530](https://github.com/ClickHouse/ClickHouse/issues/15530). [#15532](https://github.com/ClickHouse/ClickHouse/pull/15532) ([alesapin](https://github.com/alesapin)).
* Fix bug with event subscription in DDLWorker which rarely may lead to query hangs in `ON CLUSTER`. Introduced in [#13450](https://github.com/ClickHouse/ClickHouse/issues/13450). [#15477](https://github.com/ClickHouse/ClickHouse/pull/15477) ([alesapin](https://github.com/alesapin)).
* Report proper error when the second argument of `boundingRatio` aggregate function has a wrong type. [#15407](https://github.com/ClickHouse/ClickHouse/pull/15407) ([detailyang](https://github.com/detailyang)).
* Fix bug where queries like SELECT toStartOfDay(today()) fail complaining about empty time_zone argument. [#15319](https://github.com/ClickHouse/ClickHouse/pull/15319) ([Bharat Nallan](https://github.com/bharatnc)).
* Fix race condition during MergeTree table rename and background cleanup. [#15304](https://github.com/ClickHouse/ClickHouse/pull/15304) ([alesapin](https://github.com/alesapin)).
* Fix rare race condition on server startup when system.logs are enabled. [#15300](https://github.com/ClickHouse/ClickHouse/pull/15300) ([alesapin](https://github.com/alesapin)).
* Fix MSan report in QueryLog. Uninitialized memory can be used for the field `memory_usage`. [#15258](https://github.com/ClickHouse/ClickHouse/pull/15258) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix instance crash when using joinGet with LowCardinality types. This fixes https://github.com/ClickHouse/ClickHouse/issues/15214. [#15220](https://github.com/ClickHouse/ClickHouse/pull/15220) ([Amos Bird](https://github.com/amosbird)).
* Fix bug in table engine `Buffer` which doesn't allow to insert data of new structure into `Buffer` after `ALTER` query. Fixes [#15117](https://github.com/ClickHouse/ClickHouse/issues/15117). [#15192](https://github.com/ClickHouse/ClickHouse/pull/15192) ([alesapin](https://github.com/alesapin)).
* Adjust decimals field size in mysql column definition packet. [#15152](https://github.com/ClickHouse/ClickHouse/pull/15152) ([maqroll](https://github.com/maqroll)).
* Fixed `Cannot rename ... errno: 22, strerror: Invalid argument` error on DDL query execution in Atomic database when running clickhouse-server in docker on Mac OS. [#15024](https://github.com/ClickHouse/ClickHouse/pull/15024) ([tavplubix](https://github.com/tavplubix)).
* Fix to make predicate push down work when subquery contains finalizeAggregation function. Fixes [#14847](https://github.com/ClickHouse/ClickHouse/issues/14847). [#14937](https://github.com/ClickHouse/ClickHouse/pull/14937) ([filimonov](https://github.com/filimonov)).
* Fix a problem where the server may get stuck on startup while talking to ZooKeeper, if the configuration files have to be fetched from ZK (using the `from_zk` include option). This fixes [#14814](https://github.com/ClickHouse/ClickHouse/issues/14814). [#14843](https://github.com/ClickHouse/ClickHouse/pull/14843) ([Alexander Kuzmenkov](https://github.com/akuzm)).
#### Improvement
* Now it's possible to change the type of version column for `VersionedCollapsingMergeTree` with `ALTER` query. [#15442](https://github.com/ClickHouse/ClickHouse/pull/15442) ([alesapin](https://github.com/alesapin)).
### ClickHouse release v20.9.2.20, 2020-09-22
#### New Feature
@ -286,6 +510,110 @@
## ClickHouse release 20.8
### ClickHouse release v20.8.6.6-lts, 2020-11-13
#### Bug Fix
* Fix rare silent crashes when query profiler is on and ClickHouse is installed on OS with glibc version that has (supposedly) broken asynchronous unwind tables for some functions. This fixes [#15301](https://github.com/ClickHouse/ClickHouse/issues/15301). This fixes [#13098](https://github.com/ClickHouse/ClickHouse/issues/13098). [#16846](https://github.com/ClickHouse/ClickHouse/pull/16846) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Now when parsing AVRO from input the LowCardinality is removed from type. Fixes [#16188](https://github.com/ClickHouse/ClickHouse/issues/16188). [#16521](https://github.com/ClickHouse/ClickHouse/pull/16521) ([Mike](https://github.com/myrrc)).
* Fix rapid growth of metadata when using MySQL Master -> MySQL Slave -> ClickHouse MaterializeMySQL Engine, and `slave_parallel_worker` enabled on MySQL Slave, by properly shrinking GTID sets. This fixes [#15951](https://github.com/ClickHouse/ClickHouse/issues/15951). [#16504](https://github.com/ClickHouse/ClickHouse/pull/16504) ([TCeason](https://github.com/TCeason)).
* Fix DROP TABLE for Distributed (racy with INSERT). [#16409](https://github.com/ClickHouse/ClickHouse/pull/16409) ([Azat Khuzhin](https://github.com/azat)).
* Fix processing of very large entries in replication queue. Very large entries may appear in ALTER queries if table structure is extremely large (near 1 MB). This fixes [#16307](https://github.com/ClickHouse/ClickHouse/issues/16307). [#16332](https://github.com/ClickHouse/ClickHouse/pull/16332) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fixed the inconsistent behaviour when a part of return data could be dropped because the set for its filtration wasn't created. [#16308](https://github.com/ClickHouse/ClickHouse/pull/16308) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fix bug with MySQL database. When MySQL server used as database engine is down some queries raise Exception, because they try to get tables from disabled server, while it's unnecessary. For example, query `SELECT ... FROM system.parts` should work only with MergeTree tables and don't touch MySQL database at all. [#16032](https://github.com/ClickHouse/ClickHouse/pull/16032) ([Kruglov Pavel](https://github.com/Avogar)).
### ClickHouse release v20.8.5.45-lts, 2020-10-29
#### Bug Fix
* Fix double free in case of exception in function `dictGet`. It could have happened if dictionary was loaded with error. [#16429](https://github.com/ClickHouse/ClickHouse/pull/16429) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix group by with totals/rollup/cube modifers and min/max functions over group by keys. Fixes [#16393](https://github.com/ClickHouse/ClickHouse/issues/16393). [#16397](https://github.com/ClickHouse/ClickHouse/pull/16397) ([Anton Popov](https://github.com/CurtizJ)).
* Fix async Distributed INSERT w/ prefer_localhost_replica=0 and internal_replication. [#16358](https://github.com/ClickHouse/ClickHouse/pull/16358) ([Azat Khuzhin](https://github.com/azat)).
* Fix a possible memory leak during `GROUP BY` with string keys, caused by an error in `TwoLevelStringHashTable` implementation. [#16264](https://github.com/ClickHouse/ClickHouse/pull/16264) ([Amos Bird](https://github.com/amosbird)).
* Fix the case when memory can be overallocated regardless to the limit. This closes [#14560](https://github.com/ClickHouse/ClickHouse/issues/14560). [#16206](https://github.com/ClickHouse/ClickHouse/pull/16206) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix `ALTER MODIFY ... ORDER BY` query hang for `ReplicatedVersionedCollapsingMergeTree`. This fixes [#15980](https://github.com/ClickHouse/ClickHouse/issues/15980). [#16011](https://github.com/ClickHouse/ClickHouse/pull/16011) ([alesapin](https://github.com/alesapin)).
* Fix collate name & charset name parser and support `length = 0` for string type. [#16008](https://github.com/ClickHouse/ClickHouse/pull/16008) ([Winter Zhang](https://github.com/zhang2014)).
* Allow to use direct layout for dictionaries with complex keys. [#16007](https://github.com/ClickHouse/ClickHouse/pull/16007) ([Anton Popov](https://github.com/CurtizJ)).
* Prevent replica hang for 5-10 mins when replication error happens after a period of inactivity. [#15987](https://github.com/ClickHouse/ClickHouse/pull/15987) ([filimonov](https://github.com/filimonov)).
* Fix rare segfaults when inserting into or selecting from MaterializedView and concurrently dropping target table (for Atomic database engine). [#15984](https://github.com/ClickHouse/ClickHouse/pull/15984) ([tavplubix](https://github.com/tavplubix)).
* Fix ambiguity in parsing of settings profiles: `CREATE USER ... SETTINGS profile readonly` is now considered as using a profile named `readonly`, not a setting named `profile` with the readonly constraint. This fixes [#15628](https://github.com/ClickHouse/ClickHouse/issues/15628). [#15982](https://github.com/ClickHouse/ClickHouse/pull/15982) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix a crash when database creation fails. [#15954](https://github.com/ClickHouse/ClickHouse/pull/15954) ([Winter Zhang](https://github.com/zhang2014)).
* Fixed `DROP TABLE IF EXISTS` failure with `Table ... doesn't exist` error when table is concurrently renamed (for Atomic database engine). Fixed rare deadlock when concurrently executing some DDL queries with multiple tables (like `DROP DATABASE` and `RENAME TABLE`) Fixed `DROP/DETACH DATABASE` failure with `Table ... doesn't exist` when concurrently executing `DROP/DETACH TABLE`. [#15934](https://github.com/ClickHouse/ClickHouse/pull/15934) ([tavplubix](https://github.com/tavplubix)).
* Fix incorrect empty result for query from `Distributed` table if query has `WHERE`, `PREWHERE` and `GLOBAL IN`. Fixes [#15792](https://github.com/ClickHouse/ClickHouse/issues/15792). [#15933](https://github.com/ClickHouse/ClickHouse/pull/15933) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix possible deadlocks in RBAC. [#15875](https://github.com/ClickHouse/ClickHouse/pull/15875) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix exception `Block structure mismatch` in `SELECT ... ORDER BY DESC` queries which were executed after `ALTER MODIFY COLUMN` query. Fixes [#15800](https://github.com/ClickHouse/ClickHouse/issues/15800). [#15852](https://github.com/ClickHouse/ClickHouse/pull/15852) ([alesapin](https://github.com/alesapin)).
* Fix some cases of queries, in which only virtual columns are selected. Previously `Not found column _nothing in block` exception may be thrown. Fixes [#12298](https://github.com/ClickHouse/ClickHouse/issues/12298). [#15756](https://github.com/ClickHouse/ClickHouse/pull/15756) ([Anton Popov](https://github.com/CurtizJ)).
* Fix error `Cannot find column` which may happen at insertion into `MATERIALIZED VIEW` in case if query for `MV` containes `ARRAY JOIN`. [#15717](https://github.com/ClickHouse/ClickHouse/pull/15717) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed too low default value of `max_replicated_logs_to_keep` setting, which might cause replicas to become lost too often. Improve lost replica recovery process by choosing the most up-to-date replica to clone. Also do not remove old parts from lost replica, detach them instead. [#15701](https://github.com/ClickHouse/ClickHouse/pull/15701) ([tavplubix](https://github.com/tavplubix)).
* Fix error `Cannot add simple transform to empty Pipe` which happened while reading from `Buffer` table which has different structure than destination table. It was possible if destination table returned empty result for query. Fixes [#15529](https://github.com/ClickHouse/ClickHouse/issues/15529). [#15662](https://github.com/ClickHouse/ClickHouse/pull/15662) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed bug with globs in S3 table function, region from URL was not applied to S3 client configuration. [#15646](https://github.com/ClickHouse/ClickHouse/pull/15646) ([Vladimir Chebotarev](https://github.com/excitoon)).
* Decrement the `ReadonlyReplica` metric when detaching read-only tables. This fixes [#15598](https://github.com/ClickHouse/ClickHouse/issues/15598). [#15592](https://github.com/ClickHouse/ClickHouse/pull/15592) ([sundyli](https://github.com/sundy-li)).
* Throw an error when a single parameter is passed to ReplicatedMergeTree instead of ignoring it. [#15516](https://github.com/ClickHouse/ClickHouse/pull/15516) ([nvartolomei](https://github.com/nvartolomei)).
#### Improvement
* Now it's allowed to execute `ALTER ... ON CLUSTER` queries regardless of the `<internal_replication>` setting in cluster config. [#16075](https://github.com/ClickHouse/ClickHouse/pull/16075) ([alesapin](https://github.com/alesapin)).
* Unfold `{database}`, `{table}` and `{uuid}` macros in `ReplicatedMergeTree` arguments on table creation. [#16159](https://github.com/ClickHouse/ClickHouse/pull/16159) ([tavplubix](https://github.com/tavplubix)).
### ClickHouse release v20.8.4.11-lts, 2020-10-09
#### Bug Fix
* Fix the order of destruction for resources in `ReadFromStorage` step of query plan. It might cause crashes in rare cases. Possibly connected with [#15610](https://github.com/ClickHouse/ClickHouse/issues/15610). [#15645](https://github.com/ClickHouse/ClickHouse/pull/15645) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed `Element ... is not a constant expression` error when using `JSON*` function result in `VALUES`, `LIMIT` or right side of `IN` operator. [#15589](https://github.com/ClickHouse/ClickHouse/pull/15589) ([tavplubix](https://github.com/tavplubix)).
* Prevent the possibility of error message `Could not calculate available disk space (statvfs), errno: 4, strerror: Interrupted system call`. This fixes [#15541](https://github.com/ClickHouse/ClickHouse/issues/15541). [#15557](https://github.com/ClickHouse/ClickHouse/pull/15557) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Significantly reduce memory usage in AggregatingInOrderTransform/optimize_aggregation_in_order. [#15543](https://github.com/ClickHouse/ClickHouse/pull/15543) ([Azat Khuzhin](https://github.com/azat)).
* Mutation might hang waiting for some non-existent part after `MOVE` or `REPLACE PARTITION` or, in rare cases, after `DETACH` or `DROP PARTITION`. It's fixed. [#15537](https://github.com/ClickHouse/ClickHouse/pull/15537) ([tavplubix](https://github.com/tavplubix)).
* Fix bug when `ILIKE` operator stops being case insensitive if `LIKE` with the same pattern was executed. [#15536](https://github.com/ClickHouse/ClickHouse/pull/15536) ([alesapin](https://github.com/alesapin)).
* Fix `Missing columns` errors when selecting columns which absent in data, but depend on other columns which also absent in data. Fixes [#15530](https://github.com/ClickHouse/ClickHouse/issues/15530). [#15532](https://github.com/ClickHouse/ClickHouse/pull/15532) ([alesapin](https://github.com/alesapin)).
* Fix bug with event subscription in DDLWorker which rarely may lead to query hangs in `ON CLUSTER`. Introduced in [#13450](https://github.com/ClickHouse/ClickHouse/issues/13450). [#15477](https://github.com/ClickHouse/ClickHouse/pull/15477) ([alesapin](https://github.com/alesapin)).
* Report proper error when the second argument of `boundingRatio` aggregate function has a wrong type. [#15407](https://github.com/ClickHouse/ClickHouse/pull/15407) ([detailyang](https://github.com/detailyang)).
* Fix race condition during MergeTree table rename and background cleanup. [#15304](https://github.com/ClickHouse/ClickHouse/pull/15304) ([alesapin](https://github.com/alesapin)).
* Fix rare race condition on server startup when system.logs are enabled. [#15300](https://github.com/ClickHouse/ClickHouse/pull/15300) ([alesapin](https://github.com/alesapin)).
* Fix MSan report in QueryLog. Uninitialized memory can be used for the field `memory_usage`. [#15258](https://github.com/ClickHouse/ClickHouse/pull/15258) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix instance crash when using joinGet with LowCardinality types. This fixes https://github.com/ClickHouse/ClickHouse/issues/15214. [#15220](https://github.com/ClickHouse/ClickHouse/pull/15220) ([Amos Bird](https://github.com/amosbird)).
* Fix bug in table engine `Buffer` which doesn't allow to insert data of new structure into `Buffer` after `ALTER` query. Fixes [#15117](https://github.com/ClickHouse/ClickHouse/issues/15117). [#15192](https://github.com/ClickHouse/ClickHouse/pull/15192) ([alesapin](https://github.com/alesapin)).
* Adjust decimals field size in mysql column definition packet. [#15152](https://github.com/ClickHouse/ClickHouse/pull/15152) ([maqroll](https://github.com/maqroll)).
* We already use padded comparison between String and FixedString (https://github.com/ClickHouse/ClickHouse/blob/master/src/Functions/FunctionsComparison.h#L333). This PR applies the same logic to field comparison which corrects the usage of FixedString as primary keys. This fixes https://github.com/ClickHouse/ClickHouse/issues/14908. [#15033](https://github.com/ClickHouse/ClickHouse/pull/15033) ([Amos Bird](https://github.com/amosbird)).
* If function `bar` was called with specifically crafter arguments, buffer overflow was possible. This closes [#13926](https://github.com/ClickHouse/ClickHouse/issues/13926). [#15028](https://github.com/ClickHouse/ClickHouse/pull/15028) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fixed `Cannot rename ... errno: 22, strerror: Invalid argument` error on DDL query execution in Atomic database when running clickhouse-server in docker on Mac OS. [#15024](https://github.com/ClickHouse/ClickHouse/pull/15024) ([tavplubix](https://github.com/tavplubix)).
* Now settings `number_of_free_entries_in_pool_to_execute_mutation` and `number_of_free_entries_in_pool_to_lower_max_size_of_merge` can be equal to `background_pool_size`. [#14975](https://github.com/ClickHouse/ClickHouse/pull/14975) ([alesapin](https://github.com/alesapin)).
* Fix to make predicate push down work when subquery contains finalizeAggregation function. Fixes [#14847](https://github.com/ClickHouse/ClickHouse/issues/14847). [#14937](https://github.com/ClickHouse/ClickHouse/pull/14937) ([filimonov](https://github.com/filimonov)).
* Publish CPU frequencies per logical core in `system.asynchronous_metrics`. This fixes https://github.com/ClickHouse/ClickHouse/issues/14923. [#14924](https://github.com/ClickHouse/ClickHouse/pull/14924) ([Alexander Kuzmenkov](https://github.com/akuzm)).
* Fixed `.metadata.tmp File exists` error when using `MaterializeMySQL` database engine. [#14898](https://github.com/ClickHouse/ClickHouse/pull/14898) ([Winter Zhang](https://github.com/zhang2014)).
* Fix a problem where the server may get stuck on startup while talking to ZooKeeper, if the configuration files have to be fetched from ZK (using the `from_zk` include option). This fixes [#14814](https://github.com/ClickHouse/ClickHouse/issues/14814). [#14843](https://github.com/ClickHouse/ClickHouse/pull/14843) ([Alexander Kuzmenkov](https://github.com/akuzm)).
* Fix wrong monotonicity detection for shrunk `Int -> Int` cast of signed types. It might lead to incorrect query result. This bug is unveiled in [#14513](https://github.com/ClickHouse/ClickHouse/issues/14513). [#14783](https://github.com/ClickHouse/ClickHouse/pull/14783) ([Amos Bird](https://github.com/amosbird)).
* Fixed the incorrect sorting order of `Nullable` column. This fixes [#14344](https://github.com/ClickHouse/ClickHouse/issues/14344). [#14495](https://github.com/ClickHouse/ClickHouse/pull/14495) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
#### Improvement
* Now it's possible to change the type of version column for `VersionedCollapsingMergeTree` with `ALTER` query. [#15442](https://github.com/ClickHouse/ClickHouse/pull/15442) ([alesapin](https://github.com/alesapin)).
### ClickHouse release v20.8.3.18-stable, 2020-09-18
#### Bug Fix
* Fix the issue when some invocations of `extractAllGroups` function may trigger "Memory limit exceeded" error. This fixes [#13383](https://github.com/ClickHouse/ClickHouse/issues/13383). [#14889](https://github.com/ClickHouse/ClickHouse/pull/14889) ([alexey-milovidov](https://github.com/alexey-milovidov)).
* Fix SIGSEGV for an attempt to INSERT into StorageFile(fd). [#14887](https://github.com/ClickHouse/ClickHouse/pull/14887) ([Azat Khuzhin](https://github.com/azat)).
* Fix rare error in `SELECT` queries when the queried column has `DEFAULT` expression which depends on the other column which also has `DEFAULT` and not present in select query and not exists on disk. Partially fixes [#14531](https://github.com/ClickHouse/ClickHouse/issues/14531). [#14845](https://github.com/ClickHouse/ClickHouse/pull/14845) ([alesapin](https://github.com/alesapin)).
* Fixed missed default database name in metadata of materialized view when executing `ALTER ... MODIFY QUERY`. [#14664](https://github.com/ClickHouse/ClickHouse/pull/14664) ([tavplubix](https://github.com/tavplubix)).
* Fix bug when `ALTER UPDATE` mutation with Nullable column in assignment expression and constant value (like `UPDATE x = 42`) leads to incorrect value in column or segfault. Fixes [#13634](https://github.com/ClickHouse/ClickHouse/issues/13634), [#14045](https://github.com/ClickHouse/ClickHouse/issues/14045). [#14646](https://github.com/ClickHouse/ClickHouse/pull/14646) ([alesapin](https://github.com/alesapin)).
* Fix wrong Decimal multiplication result caused wrong decimal scale of result column. [#14603](https://github.com/ClickHouse/ClickHouse/pull/14603) ([Artem Zuikov](https://github.com/4ertus2)).
* Added the checker as neither calling `lc->isNullable()` nor calling `ls->getDictionaryPtr()->isNullable()` would return the correct result. [#14591](https://github.com/ClickHouse/ClickHouse/pull/14591) ([myrrc](https://github.com/myrrc)).
* Cleanup data directory after Zookeeper exceptions during CreateQuery for StorageReplicatedMergeTree Engine. [#14563](https://github.com/ClickHouse/ClickHouse/pull/14563) ([Bharat Nallan](https://github.com/bharatnc)).
* Fix rare segfaults in functions with combinator -Resample, which could appear in result of overflow with very large parameters. [#14562](https://github.com/ClickHouse/ClickHouse/pull/14562) ([Anton Popov](https://github.com/CurtizJ)).
#### Improvement
* Speed up server shutdown process if there are ongoing S3 requests. [#14858](https://github.com/ClickHouse/ClickHouse/pull/14858) ([Pavel Kovalenko](https://github.com/Jokser)).
* Allow using multi-volume storage configuration in storage Distributed. [#14839](https://github.com/ClickHouse/ClickHouse/pull/14839) ([Pavel Kovalenko](https://github.com/Jokser)).
* Speed up server shutdown process if there are ongoing S3 requests. [#14496](https://github.com/ClickHouse/ClickHouse/pull/14496) ([Pavel Kovalenko](https://github.com/Jokser)).
* Support custom codecs in compact parts. [#12183](https://github.com/ClickHouse/ClickHouse/pull/12183) ([Anton Popov](https://github.com/CurtizJ)).
### ClickHouse release v20.8.2.3-stable, 2020-09-08
#### Backward Incompatible Change
@ -1636,6 +1964,74 @@ No changes compared to v20.4.3.16-stable.
## ClickHouse release v20.3
### ClickHouse release v20.3.21.2-lts, 2020-11-02
#### Bug Fix
* Fix dictGet in sharding_key (and similar places, i.e. when the function context is stored permanently). [#16205](https://github.com/ClickHouse/ClickHouse/pull/16205) ([Azat Khuzhin](https://github.com/azat)).
* Fix incorrect empty result for query from `Distributed` table if query has `WHERE`, `PREWHERE` and `GLOBAL IN`. Fixes [#15792](https://github.com/ClickHouse/ClickHouse/issues/15792). [#15933](https://github.com/ClickHouse/ClickHouse/pull/15933) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix missing or excessive headers in `TSV/CSVWithNames` formats. This fixes [#12504](https://github.com/ClickHouse/ClickHouse/issues/12504). [#13343](https://github.com/ClickHouse/ClickHouse/pull/13343) ([Azat Khuzhin](https://github.com/azat)).
### ClickHouse release v20.3.20.6-lts, 2020-10-09
#### Bug Fix
* Mutation might hang waiting for some non-existent part after `MOVE` or `REPLACE PARTITION` or, in rare cases, after `DETACH` or `DROP PARTITION`. It's fixed. [#15724](https://github.com/ClickHouse/ClickHouse/pull/15724), [#15537](https://github.com/ClickHouse/ClickHouse/pull/15537) ([tavplubix](https://github.com/tavplubix)).
* Fix hang of queries with a lot of subqueries to same table of `MySQL` engine. Previously, if there were more than 16 subqueries to same `MySQL` table in query, it hang forever. [#15299](https://github.com/ClickHouse/ClickHouse/pull/15299) ([Anton Popov](https://github.com/CurtizJ)).
* Fix 'Unknown identifier' in GROUP BY when query has JOIN over Merge table. [#15242](https://github.com/ClickHouse/ClickHouse/pull/15242) ([Artem Zuikov](https://github.com/4ertus2)).
* Fix to make predicate push down work when subquery contains finalizeAggregation function. Fixes [#14847](https://github.com/ClickHouse/ClickHouse/issues/14847). [#14937](https://github.com/ClickHouse/ClickHouse/pull/14937) ([filimonov](https://github.com/filimonov)).
* Concurrent `ALTER ... REPLACE/MOVE PARTITION ...` queries might cause deadlock. It's fixed. [#13626](https://github.com/ClickHouse/ClickHouse/pull/13626) ([tavplubix](https://github.com/tavplubix)).
### ClickHouse release v20.3.19.4-lts, 2020-09-18
#### Bug Fix
* Fix rare error in `SELECT` queries when the queried column has `DEFAULT` expression which depends on the other column which also has `DEFAULT` and not present in select query and not exists on disk. Partially fixes [#14531](https://github.com/ClickHouse/ClickHouse/issues/14531). [#14845](https://github.com/ClickHouse/ClickHouse/pull/14845) ([alesapin](https://github.com/alesapin)).
* Fix bug when `ALTER UPDATE` mutation with Nullable column in assignment expression and constant value (like `UPDATE x = 42`) leads to incorrect value in column or segfault. Fixes [#13634](https://github.com/ClickHouse/ClickHouse/issues/13634), [#14045](https://github.com/ClickHouse/ClickHouse/issues/14045). [#14646](https://github.com/ClickHouse/ClickHouse/pull/14646) ([alesapin](https://github.com/alesapin)).
* Fix wrong Decimal multiplication result caused wrong decimal scale of result column. [#14603](https://github.com/ClickHouse/ClickHouse/pull/14603) ([Artem Zuikov](https://github.com/4ertus2)).
#### Improvement
* Support custom codecs in compact parts. [#12183](https://github.com/ClickHouse/ClickHouse/pull/12183) ([Anton Popov](https://github.com/CurtizJ)).
### ClickHouse release v20.3.18.10-lts, 2020-09-08
#### Bug Fix
* Stop query execution if exception happened in `PipelineExecutor` itself. This could prevent rare possible query hung. Continuation of [#14334](https://github.com/ClickHouse/ClickHouse/issues/14334). [#14402](https://github.com/ClickHouse/ClickHouse/pull/14402) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fixed the behaviour when sometimes cache-dictionary returned default value instead of present value from source. [#13624](https://github.com/ClickHouse/ClickHouse/pull/13624) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Fix parsing row policies from users.xml when names of databases or tables contain dots. This fixes [#5779](https://github.com/ClickHouse/ClickHouse/issues/5779), [#12527](https://github.com/ClickHouse/ClickHouse/issues/12527). [#13199](https://github.com/ClickHouse/ClickHouse/pull/13199) ([Vitaly Baranov](https://github.com/vitlibar)).
* Fix CAST(Nullable(String), Enum()). [#12745](https://github.com/ClickHouse/ClickHouse/pull/12745) ([Azat Khuzhin](https://github.com/azat)).
* Fixed data race in `text_log`. It does not correspond to any real bug. [#9726](https://github.com/ClickHouse/ClickHouse/pull/9726) ([alexey-milovidov](https://github.com/alexey-milovidov)).
#### Improvement
* Fix wrong error for long queries. It was possible to get syntax error other than `Max query size exceeded` for correct query. [#13928](https://github.com/ClickHouse/ClickHouse/pull/13928) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Return NULL/zero when value is not parsed completely in parseDateTimeBestEffortOrNull/Zero functions. This fixes [#7876](https://github.com/ClickHouse/ClickHouse/issues/7876). [#11653](https://github.com/ClickHouse/ClickHouse/pull/11653) ([alexey-milovidov](https://github.com/alexey-milovidov)).
#### Performance Improvement
* Slightly optimize very short queries with LowCardinality. [#14129](https://github.com/ClickHouse/ClickHouse/pull/14129) ([Anton Popov](https://github.com/CurtizJ)).
#### Build/Testing/Packaging Improvement
* Fix UBSan report (adding zero to nullptr) in HashTable that appeared after migration to clang-10. [#10638](https://github.com/ClickHouse/ClickHouse/pull/10638) ([alexey-milovidov](https://github.com/alexey-milovidov)).
### ClickHouse release v20.3.17.173-lts, 2020-08-15
#### Bug Fix
* Fix crash in JOIN with StorageMerge and `set enable_optimize_predicate_expression=1`. [#13679](https://github.com/ClickHouse/ClickHouse/pull/13679) ([Artem Zuikov](https://github.com/4ertus2)).
* Fix invalid return type for comparison of tuples with `NULL` elements. Fixes [#12461](https://github.com/ClickHouse/ClickHouse/issues/12461). [#13420](https://github.com/ClickHouse/ClickHouse/pull/13420) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix queries with constant columns and `ORDER BY` prefix of primary key. [#13396](https://github.com/ClickHouse/ClickHouse/pull/13396) ([Anton Popov](https://github.com/CurtizJ)).
* Return passed number for numbers with MSB set in roundUpToPowerOfTwoOrZero(). [#13234](https://github.com/ClickHouse/ClickHouse/pull/13234) ([Azat Khuzhin](https://github.com/azat)).
### ClickHouse release v20.3.16.165-lts 2020-08-10
#### Bug Fix

3
CMakeLists.txt
View File

@ -445,6 +445,7 @@ include (cmake/find/brotli.cmake)
include (cmake/find/protobuf.cmake)
include (cmake/find/grpc.cmake)
include (cmake/find/pdqsort.cmake)
include (cmake/find/miniselect.cmake)
include (cmake/find/hdfs3.cmake) # uses protobuf
include (cmake/find/poco.cmake)
include (cmake/find/curl.cmake)
@ -455,6 +456,8 @@ include (cmake/find/simdjson.cmake)
include (cmake/find/rapidjson.cmake)
include (cmake/find/fastops.cmake)
include (cmake/find/odbc.cmake)
include (cmake/find/rocksdb.cmake)
if(NOT USE_INTERNAL_PARQUET_LIBRARY)
set (ENABLE_ORC OFF CACHE INTERNAL "")

37
base/common/sort.h Normal file
View File

@ -0,0 +1,37 @@
#pragma once
#if !defined(ARCADIA_BUILD)
# include <miniselect/floyd_rivest_select.h> // Y_IGNORE
#else
# include <algorithm>
#endif
template <class RandomIt>
void nth_element(RandomIt first, RandomIt nth, RandomIt last)
{
#if !defined(ARCADIA_BUILD)
::miniselect::floyd_rivest_select(first, nth, last);
#else
::std::nth_element(first, nth, last);
#endif
}
template <class RandomIt>
void partial_sort(RandomIt first, RandomIt middle, RandomIt last)
{
#if !defined(ARCADIA_BUILD)
::miniselect::floyd_rivest_partial_sort(first, middle, last);
#else
::std::partial_sort(first, middle, last);
#endif
}
template <class RandomIt, class Compare>
void partial_sort(RandomIt first, RandomIt middle, RandomIt last, Compare compare)
{
#if !defined(ARCADIA_BUILD)
::miniselect::floyd_rivest_partial_sort(first, middle, last, compare);
#else
::std::partial_sort(first, middle, last, compare);
#endif
}

62
base/common/wide_integer_impl.h
View File

@ -5,6 +5,9 @@
/// (See at http://www.boost.org/LICENSE_1_0.txt)
#include "throwError.h"
#include <cfloat>
#include <limits>
#include <cassert>
namespace wide
{
@ -192,7 +195,7 @@ struct integer<Bits, Signed>::_impl
}
template <typename T>
constexpr static auto to_Integral(T f) noexcept
__attribute__((no_sanitize("undefined"))) constexpr static auto to_Integral(T f) noexcept
{
if constexpr (std::is_same_v<T, __int128>)
return f;
@ -225,25 +228,54 @@ struct integer<Bits, Signed>::_impl
self.items[i] = 0;
}
constexpr static void wide_integer_from_bultin(integer<Bits, Signed> & self, double rhs) noexcept
/**
* N.B. t is constructed from double, so max(t) = max(double) ~ 2^310
* the recursive call happens when t / 2^64 > 2^64, so there won't be more than 5 of them.
*
* t = a1 * max_int + b1, a1 > max_int, b1 < max_int
* a1 = a2 * max_int + b2, a2 > max_int, b2 < max_int
* a_(n - 1) = a_n * max_int + b2, a_n <= max_int <- base case.
*/
template <class T>
constexpr static void set_multiplier(integer<Bits, Signed> & self, T t) noexcept {
constexpr uint64_t max_int = std::numeric_limits<uint64_t>::max();
const T alpha = t / max_int;
if (alpha <= max_int)
self = static_cast<uint64_t>(alpha);
else // max(double) / 2^64 will surely contain less than 52 precision bits, so speed up computations.
set_multiplier<double>(self, alpha);
self *= max_int;
self += static_cast<uint64_t>(t - alpha * max_int); // += b_i
}
constexpr static void wide_integer_from_bultin(integer<Bits, Signed>& self, double rhs) noexcept {
constexpr int64_t max_int = std::numeric_limits<int64_t>::max();
constexpr int64_t min_int = std::numeric_limits<int64_t>::min();
/// There are values in int64 that have more than 53 significant bits (in terms of double
/// representation). Such values, being promoted to double, are rounded up or down. If they are rounded up,
/// the result may not fit in 64 bits.
/// The example of such a number is 9.22337e+18.
/// As to_Integral does a static_cast to int64_t, it may result in UB.
/// The necessary check here is that long double has enough significant (mantissa) bits to store the
/// int64_t max value precisely.
static_assert(LDBL_MANT_DIG >= 64,
"On your system long double has less than 64 precision bits,"
"which may result in UB when initializing double from int64_t");
if ((rhs > 0 && rhs < max_int) || (rhs < 0 && rhs > min_int))
{
if ((rhs > 0 && rhs < std::numeric_limits<uint64_t>::max()) || (rhs < 0 && rhs > std::numeric_limits<int64_t>::min()))
{
self = to_Integral(rhs);
self = static_cast<int64_t>(rhs);
return;
}
long double r = rhs;
if (r < 0)
r = -r;
const long double rhs_long_double = (static_cast<long double>(rhs) < 0)
? -static_cast<long double>(rhs)
: rhs;
size_t count = r / std::numeric_limits<uint64_t>::max();
self = count;
self *= std::numeric_limits<uint64_t>::max();
long double to_diff = count;
to_diff *= std::numeric_limits<uint64_t>::max();
self += to_Integral(r - to_diff);
set_multiplier(self, rhs_long_double);
if (rhs < 0)
self = -self;

2
base/common/ya.make
View File

@ -1,4 +1,6 @@
# This file is generated automatically, do not edit. See 'ya.make.in' and use 'utils/generate-ya-make' to regenerate it.
OWNER(g:clickhouse)
LIBRARY()
ADDINCL(

2
base/common/ya.make.in
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
ADDINCL(

2
base/daemon/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
NO_COMPILER_WARNINGS()

21
base/glibc-compatibility/musl/sync_file_range.c Normal file
View File

@ -0,0 +1,21 @@
#define _GNU_SOURCE
#include <fcntl.h>
#include <errno.h>
#include "syscall.h"
// works same in x86_64 && aarch64
#define __SYSCALL_LL_E(x) (x)
#define __SYSCALL_LL_O(x) (x)
int sync_file_range(int fd, off_t pos, off_t len, unsigned flags)
{
#if defined(SYS_sync_file_range2)
return syscall(SYS_sync_file_range2, fd, flags,
__SYSCALL_LL_E(pos), __SYSCALL_LL_E(len));
#elif defined(SYS_sync_file_range)
return __syscall(SYS_sync_file_range, fd,
__SYSCALL_LL_O(pos), __SYSCALL_LL_E(len), flags);
#else
return __syscall_ret(-ENOSYS);
#endif
}

2
base/loggers/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
PEERDIR(

9
base/pcg-random/pcg_random.hpp
View File

@ -113,6 +113,12 @@
#include "pcg_extras.hpp"
namespace DB
{
struct PcgSerializer;
struct PcgDeserializer;
}
namespace pcg_detail {
using namespace pcg_extras;
@ -557,6 +563,9 @@ public:
engine<xtype1, itype1,
output_mixin1, output_previous1,
stream_mixin1, multiplier_mixin1>& rng);
friend ::DB::PcgSerializer;
friend ::DB::PcgDeserializer;
};
template <typename CharT, typename Traits,

2
base/pcg-random/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
ADDINCL (GLOBAL clickhouse/base/pcg-random)

2
base/readpassphrase/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
CFLAGS(-g0)

2
base/widechar_width/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
ADDINCL(GLOBAL clickhouse/base/widechar_width)

2
base/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
RECURSE(
common
daemon

2
cmake/find/miniselect.cmake Normal file
View File

@ -0,0 +1,2 @@
set(MINISELECT_INCLUDE_DIR ${ClickHouse_SOURCE_DIR}/contrib/miniselect/include)
message(STATUS "Using miniselect: ${MINISELECT_INCLUDE_DIR}")

67
cmake/find/rocksdb.cmake Normal file
View File

@ -0,0 +1,67 @@
option(ENABLE_ROCKSDB "Enable ROCKSDB" ${ENABLE_LIBRARIES})
if (NOT ENABLE_ROCKSDB)
if (USE_INTERNAL_ROCKSDB_LIBRARY)
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't use internal rocksdb library with ENABLE_ROCKSDB=OFF")
endif()
return()
endif()
option(USE_INTERNAL_ROCKSDB_LIBRARY "Set to FALSE to use system ROCKSDB library instead of bundled" ${NOT_UNBUNDLED})
if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/rocksdb/CMakeLists.txt")
if (USE_INTERNAL_ROCKSDB_LIBRARY)
message (WARNING "submodule contrib is missing. to fix try run: \n git submodule update --init --recursive")
message(${RECONFIGURE_MESSAGE_LEVEL} "cannot find internal rocksdb")
endif()
set (MISSING_INTERNAL_ROCKSDB 1)
endif ()
if (NOT USE_INTERNAL_ROCKSDB_LIBRARY)
find_library (ROCKSDB_LIBRARY rocksdb)
find_path (ROCKSDB_INCLUDE_DIR NAMES rocksdb/db.h PATHS ${ROCKSDB_INCLUDE_PATHS})
if (NOT ROCKSDB_LIBRARY OR NOT ROCKSDB_INCLUDE_DIR)
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find system rocksdb library")
endif()
if (NOT SNAPPY_LIBRARY)
include(cmake/find/snappy.cmake)
endif()
if (NOT ZLIB_LIBRARY)
include(cmake/find/zlib.cmake)
endif()
find_package(BZip2)
find_library(ZSTD_LIBRARY zstd)
find_library(LZ4_LIBRARY lz4)
find_library(GFLAGS_LIBRARY gflags)
if(SNAPPY_LIBRARY AND ZLIB_LIBRARY AND LZ4_LIBRARY AND BZIP2_FOUND AND ZSTD_LIBRARY AND GFLAGS_LIBRARY)
list (APPEND ROCKSDB_LIBRARY ${SNAPPY_LIBRARY})
list (APPEND ROCKSDB_LIBRARY ${ZLIB_LIBRARY})
list (APPEND ROCKSDB_LIBRARY ${LZ4_LIBRARY})
list (APPEND ROCKSDB_LIBRARY ${BZIP2_LIBRARY})
list (APPEND ROCKSDB_LIBRARY ${ZSTD_LIBRARY})
list (APPEND ROCKSDB_LIBRARY ${GFLAGS_LIBRARY})
else()
message (${RECONFIGURE_MESSAGE_LEVEL}
"Can't find system rocksdb: snappy=${SNAPPY_LIBRARY} ;"
" zlib=${ZLIB_LIBRARY} ;"
" lz4=${LZ4_LIBRARY} ;"
" bz2=${BZIP2_LIBRARY} ;"
" zstd=${ZSTD_LIBRARY} ;"
" gflags=${GFLAGS_LIBRARY} ;")
endif()
endif ()
if(ROCKSDB_LIBRARY AND ROCKSDB_INCLUDE_DIR)
set(USE_ROCKSDB 1)
elseif (NOT MISSING_INTERNAL_ROCKSDB)
set (USE_INTERNAL_ROCKSDB_LIBRARY 1)
set (ROCKSDB_INCLUDE_DIR "${ClickHouse_SOURCE_DIR}/contrib/rocksdb/include")
set (ROCKSDB_LIBRARY "rocksdb")
set (USE_ROCKSDB 1)
endif ()
message (STATUS "Using ROCKSDB=${USE_ROCKSDB}: ${ROCKSDB_INCLUDE_DIR} : ${ROCKSDB_LIBRARY}")

5
contrib/CMakeLists.txt vendored
View File

@ -36,6 +36,7 @@ add_subdirectory (murmurhash)
add_subdirectory (replxx-cmake)
add_subdirectory (ryu-cmake)
add_subdirectory (unixodbc-cmake)
add_subdirectory (xz)
add_subdirectory (poco-cmake)
add_subdirectory (croaring-cmake)
@ -320,3 +321,7 @@ if (USE_KRB5)
add_subdirectory (cyrus-sasl-cmake)
endif()
endif()
if (USE_INTERNAL_ROCKSDB_LIBRARY)
add_subdirectory(rocksdb-cmake)
endif()

2
contrib/libunwind vendored

@ -1 +1 @@
Subproject commit 27026ef4a9c6c8cc956d1d131c4d794e24096981
Subproject commit 7d78d3618910752c256b2b58c3895f4efea47fac

1
contrib/miniselect vendored Submodule

@ -0,0 +1 @@
Subproject commit be0af6bd0b6eb044d1acc4f754b229972d99903a

1
contrib/rocksdb vendored Submodule

@ -0,0 +1 @@
Subproject commit 963314ffd681596ef2738a95249fe4c1163ef87a

668
contrib/rocksdb-cmake/CMakeLists.txt Normal file
View File

@ -0,0 +1,668 @@
## this file is extracted from `contrib/rocksdb/CMakeLists.txt`
set(ROCKSDB_SOURCE_DIR "${ClickHouse_SOURCE_DIR}/contrib/rocksdb")
list(APPEND CMAKE_MODULE_PATH "${ROCKSDB_SOURCE_DIR}/cmake/modules/")
find_program(CCACHE_FOUND ccache)
if(CCACHE_FOUND)
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
endif(CCACHE_FOUND)
if (SANITIZE STREQUAL "undefined")
set(WITH_UBSAN ON)
elseif (SANITIZE STREQUAL "address")
set(WITH_ASAN ON)
elseif (SANITIZE STREQUAL "thread")
set(WITH_TSAN ON)
endif()
set(PORTABLE ON)
## always disable jemalloc for rocksdb by default
## because it introduces non-standard jemalloc APIs
option(WITH_JEMALLOC "build with JeMalloc" OFF)
option(WITH_SNAPPY "build with SNAPPY" ${USE_SNAPPY})
## lz4, zlib, zstd is enabled in ClickHouse by default
option(WITH_LZ4 "build with lz4" ON)
option(WITH_ZLIB "build with zlib" ON)
option(WITH_ZSTD "build with zstd" ON)
# third-party/folly is only validated to work on Linux and Windows for now.
# So only turn it on there by default.
if(CMAKE_SYSTEM_NAME MATCHES "Linux|Windows")
if(MSVC AND MSVC_VERSION LESS 1910)
# Folly does not compile with MSVC older than VS2017
option(WITH_FOLLY_DISTRIBUTED_MUTEX "build with folly::DistributedMutex" OFF)
else()
option(WITH_FOLLY_DISTRIBUTED_MUTEX "build with folly::DistributedMutex" ON)
endif()
else()
option(WITH_FOLLY_DISTRIBUTED_MUTEX "build with folly::DistributedMutex" OFF)
endif()
if( NOT DEFINED CMAKE_CXX_STANDARD )
set(CMAKE_CXX_STANDARD 11)
endif()
if(MSVC)
option(WITH_XPRESS "build with windows built in compression" OFF)
include(${ROCKSDB_SOURCE_DIR}/thirdparty.inc)
else()
if(CMAKE_SYSTEM_NAME MATCHES "FreeBSD" AND NOT CMAKE_SYSTEM_NAME MATCHES "kFreeBSD")
# FreeBSD has jemalloc as default malloc
# but it does not have all the jemalloc files in include/...
set(WITH_JEMALLOC ON)
else()
if(WITH_JEMALLOC)
add_definitions(-DROCKSDB_JEMALLOC -DJEMALLOC_NO_DEMANGLE)
list(APPEND THIRDPARTY_LIBS jemalloc)
endif()
endif()
if(WITH_SNAPPY)
add_definitions(-DSNAPPY)
list(APPEND THIRDPARTY_LIBS snappy)
endif()
if(WITH_ZLIB)
add_definitions(-DZLIB)
list(APPEND THIRDPARTY_LIBS zlib)
endif()
if(WITH_LZ4)
add_definitions(-DLZ4)
list(APPEND THIRDPARTY_LIBS lz4)
endif()
if(WITH_ZSTD)
add_definitions(-DZSTD)
include_directories(${ZSTD_INCLUDE_DIR})
include_directories(${ZSTD_INCLUDE_DIR}/common)
include_directories(${ZSTD_INCLUDE_DIR}/dictBuilder)
include_directories(${ZSTD_INCLUDE_DIR}/deprecated)
list(APPEND THIRDPARTY_LIBS zstd)
endif()
endif()
string(TIMESTAMP TS "%Y/%m/%d %H:%M:%S" UTC)
set(GIT_DATE_TIME "${TS}" CACHE STRING "the time we first built rocksdb")
find_package(Git)
if(GIT_FOUND AND EXISTS "${ROCKSDB_SOURCE_DIR}/.git")
if(WIN32)
execute_process(COMMAND $ENV{COMSPEC} /C ${GIT_EXECUTABLE} -C ${ROCKSDB_SOURCE_DIR} rev-parse HEAD OUTPUT_VARIABLE GIT_SHA)
else()
execute_process(COMMAND ${GIT_EXECUTABLE} -C ${ROCKSDB_SOURCE_DIR} rev-parse HEAD OUTPUT_VARIABLE GIT_SHA)
endif()
else()
set(GIT_SHA 0)
endif()
string(REGEX REPLACE "[^0-9a-f]+" "" GIT_SHA "${GIT_SHA}")
set(BUILD_VERSION_CC ${CMAKE_BINARY_DIR}/rocksdb_build_version.cc)
configure_file(${ROCKSDB_SOURCE_DIR}/util/build_version.cc.in ${BUILD_VERSION_CC} @ONLY)
add_library(rocksdb_build_version OBJECT ${BUILD_VERSION_CC})
target_include_directories(rocksdb_build_version PRIVATE
${ROCKSDB_SOURCE_DIR}/util)
if(MSVC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zi /nologo /EHsc /GS /Gd /GR /GF /fp:precise /Zc:wchar_t /Zc:forScope /errorReport:queue")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /FC /d2Zi+ /W4 /wd4127 /wd4800 /wd4996 /wd4351 /wd4100 /wd4204 /wd4324")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W -Wextra -Wall")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsign-compare -Wshadow -Wno-unused-parameter -Wno-unused-variable -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-strict-aliasing")
if(MINGW)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-format -fno-asynchronous-unwind-tables")
add_definitions(-D_POSIX_C_SOURCE=1)
endif()
if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-omit-frame-pointer")
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-momit-leaf-frame-pointer" HAVE_OMIT_LEAF_FRAME_POINTER)
if(HAVE_OMIT_LEAF_FRAME_POINTER)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -momit-leaf-frame-pointer")
endif()
endif()
endif()
include(CheckCCompilerFlag)
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
CHECK_C_COMPILER_FLAG("-mcpu=power9" HAS_POWER9)
if(HAS_POWER9)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=power9 -mtune=power9")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=power9 -mtune=power9")
else()
CHECK_C_COMPILER_FLAG("-mcpu=power8" HAS_POWER8)
if(HAS_POWER8)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=power8 -mtune=power8")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=power8 -mtune=power8")
endif(HAS_POWER8)
endif(HAS_POWER9)
CHECK_C_COMPILER_FLAG("-maltivec" HAS_ALTIVEC)
if(HAS_ALTIVEC)
message(STATUS " HAS_ALTIVEC yes")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -maltivec")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec")
endif(HAS_ALTIVEC)
endif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
CHECK_C_COMPILER_FLAG("-march=armv8-a+crc+crypto" HAS_ARMV8_CRC)
if(HAS_ARMV8_CRC)
message(STATUS " HAS_ARMV8_CRC yes")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv8-a+crc+crypto -Wno-unused-function")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=armv8-a+crc+crypto -Wno-unused-function")
endif(HAS_ARMV8_CRC)
endif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
include(CheckCXXSourceCompiles)
if(NOT MSVC)
set(CMAKE_REQUIRED_FLAGS "-msse4.2 -mpclmul")
endif()
CHECK_CXX_SOURCE_COMPILES("
#include <cstdint>
#include <nmmintrin.h>
#include <wmmintrin.h>
int main() {
volatile uint32_t x = _mm_crc32_u32(0, 0);
const auto a = _mm_set_epi64x(0, 0);
const auto b = _mm_set_epi64x(0, 0);
const auto c = _mm_clmulepi64_si128(a, b, 0x00);
auto d = _mm_cvtsi128_si64(c);
}
" HAVE_SSE42)
unset(CMAKE_REQUIRED_FLAGS)
if(HAVE_SSE42)
add_definitions(-DHAVE_SSE42)
add_definitions(-DHAVE_PCLMUL)
elseif(FORCE_SSE42)
message(FATAL_ERROR "FORCE_SSE42=ON but unable to compile with SSE4.2 enabled")
endif()
CHECK_CXX_SOURCE_COMPILES("
#if defined(_MSC_VER) && !defined(__thread)
#define __thread __declspec(thread)
#endif
int main() {
static __thread int tls;
}
" HAVE_THREAD_LOCAL)
if(HAVE_THREAD_LOCAL)
add_definitions(-DROCKSDB_SUPPORT_THREAD_LOCAL)
endif()
option(FAIL_ON_WARNINGS "Treat compile warnings as errors" ON)
if(FAIL_ON_WARNINGS)
if(MSVC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /WX")
else() # assume GCC
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
endif()
endif()
option(WITH_ASAN "build with ASAN" OFF)
if(WITH_ASAN)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
if(WITH_JEMALLOC)
message(FATAL "ASAN does not work well with JeMalloc")
endif()
endif()
option(WITH_TSAN "build with TSAN" OFF)
if(WITH_TSAN)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread -pie")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread -fPIC")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=thread -fPIC")
if(WITH_JEMALLOC)
message(FATAL "TSAN does not work well with JeMalloc")
endif()
endif()
option(WITH_UBSAN "build with UBSAN" OFF)
if(WITH_UBSAN)
add_definitions(-DROCKSDB_UBSAN_RUN)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined")
if(WITH_JEMALLOC)
message(FATAL "UBSAN does not work well with JeMalloc")
endif()
endif()
if(CMAKE_SYSTEM_NAME MATCHES "Cygwin")
add_definitions(-fno-builtin-memcmp -DCYGWIN)
elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
add_definitions(-DOS_MACOSX)
if(CMAKE_SYSTEM_PROCESSOR MATCHES arm)
add_definitions(-DIOS_CROSS_COMPILE -DROCKSDB_LITE)
# no debug info for IOS, that will make our library big
add_definitions(-DNDEBUG)
endif()
elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")
add_definitions(-DOS_LINUX)
elseif(CMAKE_SYSTEM_NAME MATCHES "SunOS")
add_definitions(-DOS_SOLARIS)
elseif(CMAKE_SYSTEM_NAME MATCHES "kFreeBSD")
add_definitions(-DOS_GNU_KFREEBSD)
elseif(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
add_definitions(-DOS_FREEBSD)
elseif(CMAKE_SYSTEM_NAME MATCHES "NetBSD")
add_definitions(-DOS_NETBSD)
elseif(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
add_definitions(-DOS_OPENBSD)
elseif(CMAKE_SYSTEM_NAME MATCHES "DragonFly")
add_definitions(-DOS_DRAGONFLYBSD)
elseif(CMAKE_SYSTEM_NAME MATCHES "Android")
add_definitions(-DOS_ANDROID)
elseif(CMAKE_SYSTEM_NAME MATCHES "Windows")
add_definitions(-DWIN32 -DOS_WIN -D_MBCS -DWIN64 -DNOMINMAX)
if(MINGW)
add_definitions(-D_WIN32_WINNT=_WIN32_WINNT_VISTA)
endif()
endif()
if(NOT WIN32)
add_definitions(-DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX)
endif()
option(WITH_FALLOCATE "build with fallocate" ON)
if(WITH_FALLOCATE)
CHECK_CXX_SOURCE_COMPILES("
#include <fcntl.h>
#include <linux/falloc.h>
int main() {
int fd = open(\"/dev/null\", 0);
fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, 1024);
}
" HAVE_FALLOCATE)
if(HAVE_FALLOCATE)
add_definitions(-DROCKSDB_FALLOCATE_PRESENT)
endif()
endif()
CHECK_CXX_SOURCE_COMPILES("
#include <fcntl.h>
int main() {
int fd = open(\"/dev/null\", 0);
sync_file_range(fd, 0, 1024, SYNC_FILE_RANGE_WRITE);
}
" HAVE_SYNC_FILE_RANGE_WRITE)
if(HAVE_SYNC_FILE_RANGE_WRITE)
add_definitions(-DROCKSDB_RANGESYNC_PRESENT)
endif()
CHECK_CXX_SOURCE_COMPILES("
#include <pthread.h>
int main() {
(void) PTHREAD_MUTEX_ADAPTIVE_NP;
}
" HAVE_PTHREAD_MUTEX_ADAPTIVE_NP)
if(HAVE_PTHREAD_MUTEX_ADAPTIVE_NP)
add_definitions(-DROCKSDB_PTHREAD_ADAPTIVE_MUTEX)
endif()
include(CheckCXXSymbolExists)
if(CMAKE_SYSTEM_NAME MATCHES "^FreeBSD")
check_cxx_symbol_exists(malloc_usable_size ${ROCKSDB_SOURCE_DIR}/malloc_np.h HAVE_MALLOC_USABLE_SIZE)
else()
check_cxx_symbol_exists(malloc_usable_size ${ROCKSDB_SOURCE_DIR}/malloc.h HAVE_MALLOC_USABLE_SIZE)
endif()
if(HAVE_MALLOC_USABLE_SIZE)
add_definitions(-DROCKSDB_MALLOC_USABLE_SIZE)
endif()
check_cxx_symbol_exists(sched_getcpu sched.h HAVE_SCHED_GETCPU)
if(HAVE_SCHED_GETCPU)
add_definitions(-DROCKSDB_SCHED_GETCPU_PRESENT)
endif()
check_cxx_symbol_exists(getauxval auvx.h HAVE_AUXV_GETAUXVAL)
if(HAVE_AUXV_GETAUXVAL)
add_definitions(-DROCKSDB_AUXV_GETAUXVAL_PRESENT)
endif()
include_directories(${ROCKSDB_SOURCE_DIR})
include_directories(${ROCKSDB_SOURCE_DIR}/include)
if(WITH_FOLLY_DISTRIBUTED_MUTEX)
include_directories(${ROCKSDB_SOURCE_DIR}/third-party/folly)
endif()
find_package(Threads REQUIRED)
# Main library source code
set(SOURCES
${ROCKSDB_SOURCE_DIR}/cache/cache.cc
${ROCKSDB_SOURCE_DIR}/cache/clock_cache.cc
${ROCKSDB_SOURCE_DIR}/cache/lru_cache.cc
${ROCKSDB_SOURCE_DIR}/cache/sharded_cache.cc
${ROCKSDB_SOURCE_DIR}/db/arena_wrapped_db_iter.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_file_addition.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_file_builder.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_file_garbage.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_file_meta.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_log_format.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_log_reader.cc
${ROCKSDB_SOURCE_DIR}/db/blob/blob_log_writer.cc
${ROCKSDB_SOURCE_DIR}/db/builder.cc
${ROCKSDB_SOURCE_DIR}/db/c.cc
${ROCKSDB_SOURCE_DIR}/db/column_family.cc
${ROCKSDB_SOURCE_DIR}/db/compacted_db_impl.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction_iterator.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction_picker.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction_job.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction_picker_fifo.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction_picker_level.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/compaction_picker_universal.cc
${ROCKSDB_SOURCE_DIR}/db/compaction/sst_partitioner.cc
${ROCKSDB_SOURCE_DIR}/db/convenience.cc
${ROCKSDB_SOURCE_DIR}/db/db_filesnapshot.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_write.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_compaction_flush.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_files.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_open.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_debug.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_experimental.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_readonly.cc
${ROCKSDB_SOURCE_DIR}/db/db_impl/db_impl_secondary.cc
${ROCKSDB_SOURCE_DIR}/db/db_info_dumper.cc
${ROCKSDB_SOURCE_DIR}/db/db_iter.cc
${ROCKSDB_SOURCE_DIR}/db/dbformat.cc
${ROCKSDB_SOURCE_DIR}/db/error_handler.cc
${ROCKSDB_SOURCE_DIR}/db/event_helpers.cc
${ROCKSDB_SOURCE_DIR}/db/experimental.cc
${ROCKSDB_SOURCE_DIR}/db/external_sst_file_ingestion_job.cc
${ROCKSDB_SOURCE_DIR}/db/file_indexer.cc
${ROCKSDB_SOURCE_DIR}/db/flush_job.cc
${ROCKSDB_SOURCE_DIR}/db/flush_scheduler.cc
${ROCKSDB_SOURCE_DIR}/db/forward_iterator.cc
${ROCKSDB_SOURCE_DIR}/db/import_column_family_job.cc
${ROCKSDB_SOURCE_DIR}/db/internal_stats.cc
${ROCKSDB_SOURCE_DIR}/db/logs_with_prep_tracker.cc
${ROCKSDB_SOURCE_DIR}/db/log_reader.cc
${ROCKSDB_SOURCE_DIR}/db/log_writer.cc
${ROCKSDB_SOURCE_DIR}/db/malloc_stats.cc
${ROCKSDB_SOURCE_DIR}/db/memtable.cc
${ROCKSDB_SOURCE_DIR}/db/memtable_list.cc
${ROCKSDB_SOURCE_DIR}/db/merge_helper.cc
${ROCKSDB_SOURCE_DIR}/db/merge_operator.cc
${ROCKSDB_SOURCE_DIR}/db/range_del_aggregator.cc
${ROCKSDB_SOURCE_DIR}/db/range_tombstone_fragmenter.cc
${ROCKSDB_SOURCE_DIR}/db/repair.cc
${ROCKSDB_SOURCE_DIR}/db/snapshot_impl.cc
${ROCKSDB_SOURCE_DIR}/db/table_cache.cc
${ROCKSDB_SOURCE_DIR}/db/table_properties_collector.cc
${ROCKSDB_SOURCE_DIR}/db/transaction_log_impl.cc
${ROCKSDB_SOURCE_DIR}/db/trim_history_scheduler.cc
${ROCKSDB_SOURCE_DIR}/db/version_builder.cc
${ROCKSDB_SOURCE_DIR}/db/version_edit.cc
${ROCKSDB_SOURCE_DIR}/db/version_edit_handler.cc
${ROCKSDB_SOURCE_DIR}/db/version_set.cc
${ROCKSDB_SOURCE_DIR}/db/wal_edit.cc
${ROCKSDB_SOURCE_DIR}/db/wal_manager.cc
${ROCKSDB_SOURCE_DIR}/db/write_batch.cc
${ROCKSDB_SOURCE_DIR}/db/write_batch_base.cc
${ROCKSDB_SOURCE_DIR}/db/write_controller.cc
${ROCKSDB_SOURCE_DIR}/db/write_thread.cc
${ROCKSDB_SOURCE_DIR}/env/env.cc
${ROCKSDB_SOURCE_DIR}/env/env_chroot.cc
${ROCKSDB_SOURCE_DIR}/env/env_encryption.cc
${ROCKSDB_SOURCE_DIR}/env/env_hdfs.cc
${ROCKSDB_SOURCE_DIR}/env/file_system.cc
${ROCKSDB_SOURCE_DIR}/env/file_system_tracer.cc
${ROCKSDB_SOURCE_DIR}/env/mock_env.cc
${ROCKSDB_SOURCE_DIR}/file/delete_scheduler.cc
${ROCKSDB_SOURCE_DIR}/file/file_prefetch_buffer.cc
${ROCKSDB_SOURCE_DIR}/file/file_util.cc
${ROCKSDB_SOURCE_DIR}/file/filename.cc
${ROCKSDB_SOURCE_DIR}/file/random_access_file_reader.cc
${ROCKSDB_SOURCE_DIR}/file/read_write_util.cc
${ROCKSDB_SOURCE_DIR}/file/readahead_raf.cc
${ROCKSDB_SOURCE_DIR}/file/sequence_file_reader.cc
${ROCKSDB_SOURCE_DIR}/file/sst_file_manager_impl.cc
${ROCKSDB_SOURCE_DIR}/file/writable_file_writer.cc
${ROCKSDB_SOURCE_DIR}/logging/auto_roll_logger.cc
${ROCKSDB_SOURCE_DIR}/logging/event_logger.cc
${ROCKSDB_SOURCE_DIR}/logging/log_buffer.cc
${ROCKSDB_SOURCE_DIR}/memory/arena.cc
${ROCKSDB_SOURCE_DIR}/memory/concurrent_arena.cc
${ROCKSDB_SOURCE_DIR}/memory/jemalloc_nodump_allocator.cc
${ROCKSDB_SOURCE_DIR}/memory/memkind_kmem_allocator.cc
${ROCKSDB_SOURCE_DIR}/memtable/alloc_tracker.cc
${ROCKSDB_SOURCE_DIR}/memtable/hash_linklist_rep.cc
${ROCKSDB_SOURCE_DIR}/memtable/hash_skiplist_rep.cc
${ROCKSDB_SOURCE_DIR}/memtable/skiplistrep.cc
${ROCKSDB_SOURCE_DIR}/memtable/vectorrep.cc
${ROCKSDB_SOURCE_DIR}/memtable/write_buffer_manager.cc
${ROCKSDB_SOURCE_DIR}/monitoring/histogram.cc
${ROCKSDB_SOURCE_DIR}/monitoring/histogram_windowing.cc
${ROCKSDB_SOURCE_DIR}/monitoring/in_memory_stats_history.cc
${ROCKSDB_SOURCE_DIR}/monitoring/instrumented_mutex.cc
${ROCKSDB_SOURCE_DIR}/monitoring/iostats_context.cc
${ROCKSDB_SOURCE_DIR}/monitoring/perf_context.cc
${ROCKSDB_SOURCE_DIR}/monitoring/perf_level.cc
${ROCKSDB_SOURCE_DIR}/monitoring/persistent_stats_history.cc
${ROCKSDB_SOURCE_DIR}/monitoring/statistics.cc
${ROCKSDB_SOURCE_DIR}/monitoring/stats_dump_scheduler.cc
${ROCKSDB_SOURCE_DIR}/monitoring/thread_status_impl.cc
${ROCKSDB_SOURCE_DIR}/monitoring/thread_status_updater.cc
${ROCKSDB_SOURCE_DIR}/monitoring/thread_status_util.cc
${ROCKSDB_SOURCE_DIR}/monitoring/thread_status_util_debug.cc
${ROCKSDB_SOURCE_DIR}/options/cf_options.cc
${ROCKSDB_SOURCE_DIR}/options/db_options.cc
${ROCKSDB_SOURCE_DIR}/options/options.cc
${ROCKSDB_SOURCE_DIR}/options/options_helper.cc
${ROCKSDB_SOURCE_DIR}/options/options_parser.cc
${ROCKSDB_SOURCE_DIR}/port/stack_trace.cc
${ROCKSDB_SOURCE_DIR}/table/adaptive/adaptive_table_factory.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/binary_search_index_reader.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_based_filter_block.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_based_table_builder.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_based_table_factory.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_based_table_iterator.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_based_table_reader.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_builder.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_prefetcher.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/block_prefix_index.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/data_block_hash_index.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/data_block_footer.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/filter_block_reader_common.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/filter_policy.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/flush_block_policy.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/full_filter_block.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/hash_index_reader.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/index_builder.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/index_reader_common.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/parsed_full_filter_block.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/partitioned_filter_block.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/partitioned_index_iterator.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/partitioned_index_reader.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/reader_common.cc
${ROCKSDB_SOURCE_DIR}/table/block_based/uncompression_dict_reader.cc
${ROCKSDB_SOURCE_DIR}/table/block_fetcher.cc
${ROCKSDB_SOURCE_DIR}/table/cuckoo/cuckoo_table_builder.cc
${ROCKSDB_SOURCE_DIR}/table/cuckoo/cuckoo_table_factory.cc
${ROCKSDB_SOURCE_DIR}/table/cuckoo/cuckoo_table_reader.cc
${ROCKSDB_SOURCE_DIR}/table/format.cc
${ROCKSDB_SOURCE_DIR}/table/get_context.cc
${ROCKSDB_SOURCE_DIR}/table/iterator.cc
${ROCKSDB_SOURCE_DIR}/table/merging_iterator.cc
${ROCKSDB_SOURCE_DIR}/table/meta_blocks.cc
${ROCKSDB_SOURCE_DIR}/table/persistent_cache_helper.cc
${ROCKSDB_SOURCE_DIR}/table/plain/plain_table_bloom.cc
${ROCKSDB_SOURCE_DIR}/table/plain/plain_table_builder.cc
${ROCKSDB_SOURCE_DIR}/table/plain/plain_table_factory.cc
${ROCKSDB_SOURCE_DIR}/table/plain/plain_table_index.cc
${ROCKSDB_SOURCE_DIR}/table/plain/plain_table_key_coding.cc
${ROCKSDB_SOURCE_DIR}/table/plain/plain_table_reader.cc
${ROCKSDB_SOURCE_DIR}/table/sst_file_dumper.cc
${ROCKSDB_SOURCE_DIR}/table/sst_file_reader.cc
${ROCKSDB_SOURCE_DIR}/table/sst_file_writer.cc
${ROCKSDB_SOURCE_DIR}/table/table_properties.cc
${ROCKSDB_SOURCE_DIR}/table/two_level_iterator.cc
${ROCKSDB_SOURCE_DIR}/test_util/sync_point.cc
${ROCKSDB_SOURCE_DIR}/test_util/sync_point_impl.cc
${ROCKSDB_SOURCE_DIR}/test_util/testutil.cc
${ROCKSDB_SOURCE_DIR}/test_util/transaction_test_util.cc
${ROCKSDB_SOURCE_DIR}/tools/block_cache_analyzer/block_cache_trace_analyzer.cc
${ROCKSDB_SOURCE_DIR}/tools/dump/db_dump_tool.cc
${ROCKSDB_SOURCE_DIR}/tools/ldb_cmd.cc
${ROCKSDB_SOURCE_DIR}/tools/ldb_tool.cc
${ROCKSDB_SOURCE_DIR}/tools/sst_dump_tool.cc
${ROCKSDB_SOURCE_DIR}/tools/trace_analyzer_tool.cc
${ROCKSDB_SOURCE_DIR}/trace_replay/trace_replay.cc
${ROCKSDB_SOURCE_DIR}/trace_replay/block_cache_tracer.cc
${ROCKSDB_SOURCE_DIR}/trace_replay/io_tracer.cc
${ROCKSDB_SOURCE_DIR}/util/coding.cc
${ROCKSDB_SOURCE_DIR}/util/compaction_job_stats_impl.cc
${ROCKSDB_SOURCE_DIR}/util/comparator.cc
${ROCKSDB_SOURCE_DIR}/util/compression_context_cache.cc
${ROCKSDB_SOURCE_DIR}/util/concurrent_task_limiter_impl.cc
${ROCKSDB_SOURCE_DIR}/util/crc32c.cc
${ROCKSDB_SOURCE_DIR}/util/dynamic_bloom.cc
${ROCKSDB_SOURCE_DIR}/util/hash.cc
${ROCKSDB_SOURCE_DIR}/util/murmurhash.cc
${ROCKSDB_SOURCE_DIR}/util/random.cc
${ROCKSDB_SOURCE_DIR}/util/rate_limiter.cc
${ROCKSDB_SOURCE_DIR}/util/slice.cc
${ROCKSDB_SOURCE_DIR}/util/file_checksum_helper.cc
${ROCKSDB_SOURCE_DIR}/util/status.cc
${ROCKSDB_SOURCE_DIR}/util/string_util.cc
${ROCKSDB_SOURCE_DIR}/util/thread_local.cc
${ROCKSDB_SOURCE_DIR}/util/threadpool_imp.cc
${ROCKSDB_SOURCE_DIR}/util/xxhash.cc
${ROCKSDB_SOURCE_DIR}/utilities/backupable/backupable_db.cc
${ROCKSDB_SOURCE_DIR}/utilities/blob_db/blob_compaction_filter.cc
${ROCKSDB_SOURCE_DIR}/utilities/blob_db/blob_db.cc
${ROCKSDB_SOURCE_DIR}/utilities/blob_db/blob_db_impl.cc
${ROCKSDB_SOURCE_DIR}/utilities/blob_db/blob_db_impl_filesnapshot.cc
${ROCKSDB_SOURCE_DIR}/utilities/blob_db/blob_dump_tool.cc
${ROCKSDB_SOURCE_DIR}/utilities/blob_db/blob_file.cc
${ROCKSDB_SOURCE_DIR}/utilities/cassandra/cassandra_compaction_filter.cc
${ROCKSDB_SOURCE_DIR}/utilities/cassandra/format.cc
${ROCKSDB_SOURCE_DIR}/utilities/cassandra/merge_operator.cc
${ROCKSDB_SOURCE_DIR}/utilities/checkpoint/checkpoint_impl.cc
${ROCKSDB_SOURCE_DIR}/utilities/compaction_filters/remove_emptyvalue_compactionfilter.cc
${ROCKSDB_SOURCE_DIR}/utilities/debug.cc
${ROCKSDB_SOURCE_DIR}/utilities/env_mirror.cc
${ROCKSDB_SOURCE_DIR}/utilities/env_timed.cc
${ROCKSDB_SOURCE_DIR}/utilities/fault_injection_env.cc
${ROCKSDB_SOURCE_DIR}/utilities/fault_injection_fs.cc
${ROCKSDB_SOURCE_DIR}/utilities/leveldb_options/leveldb_options.cc
${ROCKSDB_SOURCE_DIR}/utilities/memory/memory_util.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/bytesxor.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/max.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/put.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/sortlist.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/string_append/stringappend.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/string_append/stringappend2.cc
${ROCKSDB_SOURCE_DIR}/utilities/merge_operators/uint64add.cc
${ROCKSDB_SOURCE_DIR}/utilities/object_registry.cc
${ROCKSDB_SOURCE_DIR}/utilities/option_change_migration/option_change_migration.cc
${ROCKSDB_SOURCE_DIR}/utilities/options/options_util.cc
${ROCKSDB_SOURCE_DIR}/utilities/persistent_cache/block_cache_tier.cc
${ROCKSDB_SOURCE_DIR}/utilities/persistent_cache/block_cache_tier_file.cc
${ROCKSDB_SOURCE_DIR}/utilities/persistent_cache/block_cache_tier_metadata.cc
${ROCKSDB_SOURCE_DIR}/utilities/persistent_cache/persistent_cache_tier.cc
${ROCKSDB_SOURCE_DIR}/utilities/persistent_cache/volatile_tier_impl.cc
${ROCKSDB_SOURCE_DIR}/utilities/simulator_cache/cache_simulator.cc
${ROCKSDB_SOURCE_DIR}/utilities/simulator_cache/sim_cache.cc
${ROCKSDB_SOURCE_DIR}/utilities/table_properties_collectors/compact_on_deletion_collector.cc
${ROCKSDB_SOURCE_DIR}/utilities/trace/file_trace_reader_writer.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/lock/lock_tracker.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/lock/point_lock_tracker.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/optimistic_transaction_db_impl.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/optimistic_transaction.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/pessimistic_transaction.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/pessimistic_transaction_db.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/snapshot_checker.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/transaction_base.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/transaction_db_mutex_impl.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/transaction_lock_mgr.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/transaction_util.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/write_prepared_txn.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/write_prepared_txn_db.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/write_unprepared_txn.cc
${ROCKSDB_SOURCE_DIR}/utilities/transactions/write_unprepared_txn_db.cc
${ROCKSDB_SOURCE_DIR}/utilities/ttl/db_ttl_impl.cc
${ROCKSDB_SOURCE_DIR}/utilities/write_batch_with_index/write_batch_with_index.cc
${ROCKSDB_SOURCE_DIR}/utilities/write_batch_with_index/write_batch_with_index_internal.cc
$<TARGET_OBJECTS:rocksdb_build_version>)
if(HAVE_SSE42 AND NOT MSVC)
set_source_files_properties(
${ROCKSDB_SOURCE_DIR}/util/crc32c.cc
PROPERTIES COMPILE_FLAGS "-msse4.2 -mpclmul")
endif()
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/util/crc32c_ppc.c
${ROCKSDB_SOURCE_DIR}/util/crc32c_ppc_asm.S)
endif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64")
if(HAS_ARMV8_CRC)
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/util/crc32c_arm64.cc)
endif(HAS_ARMV8_CRC)
if(WIN32)
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/port/win/io_win.cc
${ROCKSDB_SOURCE_DIR}/port/win/env_win.cc
${ROCKSDB_SOURCE_DIR}/port/win/env_default.cc
${ROCKSDB_SOURCE_DIR}/port/win/port_win.cc
${ROCKSDB_SOURCE_DIR}/port/win/win_logger.cc)
if(NOT MINGW)
# Mingw only supports std::thread when using
# posix threads.
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/port/win/win_thread.cc)
endif()
if(WITH_XPRESS)
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/port/win/xpress_win.cc)
endif()
if(WITH_JEMALLOC)
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/port/win/win_jemalloc.cc)
endif()
else()
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/port/port_posix.cc
${ROCKSDB_SOURCE_DIR}/env/env_posix.cc
${ROCKSDB_SOURCE_DIR}/env/fs_posix.cc
${ROCKSDB_SOURCE_DIR}/env/io_posix.cc)
endif()
if(WITH_FOLLY_DISTRIBUTED_MUTEX)
list(APPEND SOURCES
${ROCKSDB_SOURCE_DIR}/third-party/folly/folly/detail/Futex.cpp
${ROCKSDB_SOURCE_DIR}/third-party/folly/folly/synchronization/AtomicNotification.cpp
${ROCKSDB_SOURCE_DIR}/third-party/folly/folly/synchronization/DistributedMutex.cpp
${ROCKSDB_SOURCE_DIR}/third-party/folly/folly/synchronization/ParkingLot.cpp
${ROCKSDB_SOURCE_DIR}/third-party/folly/folly/synchronization/WaitOptions.cpp)
endif()
set(ROCKSDB_STATIC_LIB rocksdb)
if(WIN32)
set(SYSTEM_LIBS ${SYSTEM_LIBS} shlwapi.lib rpcrt4.lib)
else()
set(SYSTEM_LIBS ${CMAKE_THREAD_LIBS_INIT})
endif()
add_library(${ROCKSDB_STATIC_LIB} STATIC ${SOURCES})
target_link_libraries(${ROCKSDB_STATIC_LIB} PRIVATE
${THIRDPARTY_LIBS} ${SYSTEM_LIBS})

1
contrib/xz vendored Submodule

@ -0,0 +1 @@
Subproject commit 869b9d1b4edd6df07f819d360d306251f8147353

2
docker/packager/unbundled/Dockerfile
View File

@ -64,6 +64,8 @@ RUN apt-get update \
libbz2-dev \
libavro-dev \
libfarmhash-dev \
librocksdb-dev \
libgflags-dev \
libmysqlclient-dev \
--yes --no-install-recommends

2
docker/test/fasttest/Dockerfile
View File

@ -1,5 +1,5 @@
# docker build -t yandex/clickhouse-fasttest .
FROM ubuntu:19.10
FROM ubuntu:20.04
ENV DEBIAN_FRONTEND=noninteractive LLVM_VERSION=10

8
docker/test/fasttest/run.sh
View File

@ -127,7 +127,7 @@ function clone_submodules
(
cd "$FASTTEST_SOURCE"
SUBMODULES_TO_UPDATE=(contrib/boost contrib/zlib-ng contrib/libxml2 contrib/poco contrib/libunwind contrib/ryu contrib/fmtlib contrib/base64 contrib/cctz contrib/libcpuid contrib/double-conversion contrib/libcxx contrib/libcxxabi contrib/libc-headers contrib/lz4 contrib/zstd contrib/fastops contrib/rapidjson contrib/re2 contrib/sparsehash-c11 contrib/croaring)
SUBMODULES_TO_UPDATE=(contrib/boost contrib/zlib-ng contrib/libxml2 contrib/poco contrib/libunwind contrib/ryu contrib/fmtlib contrib/base64 contrib/cctz contrib/libcpuid contrib/double-conversion contrib/libcxx contrib/libcxxabi contrib/libc-headers contrib/lz4 contrib/zstd contrib/fastops contrib/rapidjson contrib/re2 contrib/sparsehash-c11 contrib/croaring contrib/miniselect contrib/xz)
git submodule sync
git submodule update --init --recursive "${SUBMODULES_TO_UPDATE[@]}"
@ -268,12 +268,16 @@ TESTS_TO_SKIP=(
protobuf
secure
sha256
xz
# Not sure why these two fail even in sequential mode. Disabled for now
# to make some progress.
00646_url_engine
00974_query_profiler
# In fasttest, ENABLE_LIBRARIES=0, so rocksdb engine is not enabled by default
01504_rocksdb
# Look at DistributedFilesToInsert, so cannot run in parallel.
01460_DistributedFilesToInsert
@ -283,6 +287,8 @@ TESTS_TO_SKIP=(
01322_ttest_scipy
01545_system_errors
# Checks system.errors
01563_distributed_query_finish
)
time clickhouse-test -j 8 --order=random --no-long --testname --shard --zookeeper --skip "${TESTS_TO_SKIP[@]}" 2>&1 | ts '%Y-%m-%d %H:%M:%S' | tee "$FASTTEST_OUTPUT/test_log.txt"

2
docker/test/performance-comparison/config/users.d/perf-comparison-tweaks-users.xml
View File

@ -16,7 +16,7 @@
<max_execution_time>300</max_execution_time>
<!-- One NUMA node w/o hyperthreading -->
<max_threads>20</max_threads>
<max_threads>12</max_threads>
</default>
</profiles>
</yandex>

2
docker/test/stateful_with_coverage/s3downloader
View File

@ -29,7 +29,7 @@ def dowload_with_progress(url, path):
logging.info("Downloading from %s to temp path %s", url, path)
for i in range(RETRIES_COUNT):
try:
with open(path, 'w') as f:
with open(path, 'wb') as f:
response = requests.get(url, stream=True)
response.raise_for_status()
total_length = response.headers.get('content-length')

2
docker/test/stateless_unbundled/Dockerfile
View File

@ -43,6 +43,8 @@ RUN apt-get --allow-unauthenticated update -y \
libreadline-dev \
libsasl2-dev \
libzstd-dev \
librocksdb-dev \
libgflags-dev \
lsof \
moreutils \
ncdu \

9
docker/test/stress/stress
View File

@ -17,13 +17,6 @@ def get_skip_list_cmd(path):
return ''
def run_perf_test(cmd, xmls_path, output_folder):
output_path = os.path.join(output_folder, "perf_stress_run.txt")
f = open(output_path, 'w')
p = Popen("{} --skip-tags=long --recursive --input-files {}".format(cmd, xmls_path), shell=True, stdout=f, stderr=f)
return p
def get_options(i):
options = ""
if 0 < i:
@ -75,8 +68,6 @@ if __name__ == "__main__":
args = parser.parse_args()
func_pipes = []
perf_process = None
perf_process = run_perf_test(args.perf_test_cmd, args.perf_test_xml_path, args.output_folder)
func_pipes = run_func_test(args.test_cmd, args.output_folder, args.num_parallel, args.skip_func_tests, args.global_time_limit)
logging.info("Will wait functests to finish")

45
docs/en/engines/table-engines/integrations/embedded-rocksdb.md Normal file
View File

@ -0,0 +1,45 @@
---
toc_priority: 6
toc_title: EmbeddedRocksDB
---
# EmbeddedRocksDB Engine {#EmbeddedRocksDB-engine}
This engine allows integrating ClickHouse with [rocksdb](http://rocksdb.org/).
`EmbeddedRocksDB` lets you:
## Creating a Table {#table_engine-EmbeddedRocksDB-creating-a-table}
``` sql
CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
(
name1 [type1] [DEFAULT|MATERIALIZED|ALIAS expr1],
name2 [type2] [DEFAULT|MATERIALIZED|ALIAS expr2],
...
) ENGINE = EmbeddedRocksDB PRIMARY KEY(primary_key_name)
```
Required parameters:
- `primary_key_name` – any column name in the column list.
Example:
``` sql
CREATE TABLE test
(
`key` String,
`v1` UInt32,
`v2` String,
`v3` Float32,
)
ENGINE = EmbeddedRocksDB
PRIMARY KEY key
```
## Description {#description}
- `primary key` must be specified, it only supports one column in primary key. The primary key will serialized in binary as rocksdb key.
- columns other than the primary key will be serialized in binary as rocksdb value in corresponding order.
- queries with key `equals` or `in` filtering will be optimized to multi keys lookup from rocksdb.

3
docs/en/interfaces/third-party/client-libraries.md vendored
View File

@ -26,6 +26,9 @@ toc_title: Client Libraries
- [go-clickhouse](https://github.com/roistat/go-clickhouse)
- [mailrugo-clickhouse](https://github.com/mailru/go-clickhouse)
- [golang-clickhouse](https://github.com/leprosus/golang-clickhouse)
- Swift
- [ClickHouseNIO](https://github.com/patrick-zippenfenig/ClickHouseNIO)
- [ClickHouseVapor ORM](https://github.com/patrick-zippenfenig/ClickHouseVapor)
- NodeJs
- [clickhouse (NodeJs)](https://github.com/TimonKK/clickhouse)
- [node-clickhouse](https://github.com/apla/node-clickhouse)

5
docs/en/introduction/adopters.md
View File

@ -11,6 +11,7 @@ toc_title: Adopters
| Company | Industry | Usecase | Cluster Size | (Un)Compressed Data Size<abbr title="of single replica"><sup>\*</sup></abbr> | Reference |
|------------------------------------------------------------------------------------------------|---------------------------------|-----------------------|------------------------------------------------------------|------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| <a href="https://2gis.ru" class="favicon">2gis</a> | Maps | Monitoring | — | — | [Talk in Russian, July 2019](https://youtu.be/58sPkXfq6nw) |
| <a href="https://getadmiral.com/" class="favicon">Admiral</a> | Martech | Engagement Management | — | — | [Webinar Slides, June 2020](https://altinity.com/presentations/2020/06/16/big-data-in-real-time-how-clickhouse-powers-admirals-visitor-relationships-for-publishers) |
| <a href="https://cn.aliyun.com/" class="favicon">Alibaba Cloud</a> | Cloud | Managed Service | — | — | [Official Website](https://help.aliyun.com/product/144466.html) |
| <a href="https://alohabrowser.com/" class="favicon">Aloha Browser</a> | Mobile App | Browser backend | — | — | [Slides in Russian, May 2019](https://presentations.clickhouse.tech/meetup22/aloha.pdf) |
| <a href="https://amadeus.com/" class="favicon">Amadeus</a> | Travel | Analytics | — | — | [Press Release, April 2018](https://www.altinity.com/blog/2018/4/5/amadeus-technologies-launches-investment-and-insights-tool-based-on-machine-learning-and-strategy-algorithms) |
@ -29,6 +30,7 @@ toc_title: Adopters
| <a href="https://www.citadelsecurities.com/" class="favicon">Citadel Securities</a> | Finance | — | — | — | [Contribution, March 2019](https://github.com/ClickHouse/ClickHouse/pull/4774) |
| <a href="https://city-mobil.ru" class="favicon">Citymobil</a> | Taxi | Analytics | — | — | [Blog Post in Russian, March 2020](https://habr.com/en/company/citymobil/blog/490660/) |
| <a href="https://cloudflare.com" class="favicon">Cloudflare</a> | CDN | Traffic analysis | 36 servers | — | [Blog post, May 2017](https://blog.cloudflare.com/how-cloudflare-analyzes-1m-dns-queries-per-second/), [Blog post, March 2018](https://blog.cloudflare.com/http-analytics-for-6m-requests-per-second-using-clickhouse/) |
| <a href="https://corporate.comcast.com/" class="favicon">Comcast</a> | Media | CDN Traffic Analysis | — | — | [ApacheCon 2019 Talk](https://www.youtube.com/watch?v=e9TZ6gFDjNg) |
| <a href="https://contentsquare.com" class="favicon">ContentSquare</a> | Web analytics | Main product | — | — | [Blog post in French, November 2018](http://souslecapot.net/2018/11/21/patrick-chatain-vp-engineering-chez-contentsquare-penser-davantage-amelioration-continue-que-revolution-constante/) |
| <a href="https://coru.net/" class="favicon">Corunet</a> | Analytics | Main product | — | — | [Slides in English, April 2019](https://github.com/ClickHouse/clickhouse-presentations/blob/master/meetup21/predictive_models.pdf) |
| <a href="https://www.creditx.com" class="favicon">CraiditX 氪信</a> | Finance AI | Analysis | — | — | [Slides in English, November 2019](https://github.com/ClickHouse/clickhouse-presentations/blob/master/meetup33/udf.pptx) |
@ -64,7 +66,8 @@ toc_title: Adopters
| <a href="https://tech.mymarilyn.ru" class="favicon">Marilyn</a> | Advertising | Statistics | — | — | [Talk in Russian, June 2017](https://www.youtube.com/watch?v=iXlIgx2khwc) |
| <a href="https://mellodesign.ru/" class="favicon">Mello</a> | Marketing | Analytics | 1 server | — | [Article, Oct 2020](https://vc.ru/marketing/166180-razrabotka-tipovogo-otcheta-skvoznoy-analitiki) |
| <a href="https://www.messagebird.com" class="favicon">MessageBird</a> | Telecommunications | Statistics | — | — | [Slides in English, November 2018](https://github.com/ClickHouse/clickhouse-presentations/blob/master/meetup20/messagebird.pdf) |
| <a href="https://www.mindsdb.com/" class="favicon">MindsDB</a> | Machine Learning | Main Product | — | — | [Official Website](https://www.mindsdb.com/blog/machine-learning-models-as-tables-in-ch) |
| <a href="https://www.mindsdb.com/" class="favicon">MindsDB</a> | Machine Learning | Main Product | — | — | [Official Website](https://www.mindsdb.com/blog/machine-learning-models-as-tables-in-ch) |x
| <a href="https://mux.com/" class="favicon">MUX</a> | Online Video | Video Analytics | — | — | [Talk in English, August 2019](https://altinity.com/presentations/2019/8/13/how-clickhouse-became-the-default-analytics-database-for-mux/) |
| <a href="https://www.mgid.com/" class="favicon">MGID</a> | Ad network | Web-analytics | — | — | [Blog post in Russian, April 2020](http://gs-studio.com/news-about-it/32777----clickhouse---c) |
| <a href="https://getnoc.com/" class="favicon">NOC Project</a> | Network Monitoring | Analytics | Main Product | — | [Official Website](https://getnoc.com/features/big-data/) |
| <a href="https://www.nuna.com/" class="favicon">Nuna Inc.</a> | Health Data Analytics | — | — | — | [Talk in English, July 2020](https://youtu.be/GMiXCMFDMow?t=170) |

41
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@ -1081,4 +1081,45 @@ Default value: `/var/lib/clickhouse/access/`.
- [Access Control and Account Management](../../operations/access-rights.md#access-control)
## user_directories {#user_directories}
Section of the configuration file that contains settings:
- Path to configuration file with predefined users.
- Path to folder where users created by SQL commands are stored.
If this section is specified, the path from [users_config](../../operations/server-configuration-parameters/settings.md#users-config) and [access_control_path](../../operations/server-configuration-parameters/settings.md#access_control_path) won't be used.
The `user_directories` section can contain any number of items, the order of the items means their precedence (the higher the item the higher the precedence).
**Example**
``` xml
<user_directories>
<users_xml>
<path>/etc/clickhouse-server/users.xml</path>
</users_xml>
<local_directory>
<path>/var/lib/clickhouse/access/</path>
</local_directory>
</user_directories>
```
You can also specify settings `memory` — means storing information only in memory, without writing to disk, and `ldap` — means storing information on an LDAP server.
To add an LDAP server as a remote user directory of users that are not defined locally, define a single `ldap` section with a following parameters:
- `server` — one of LDAP server names defined in `ldap_servers` config section. This parameter is mandatory and cannot be empty.
- `roles` — section with a list of locally defined roles that will be assigned to each user retrieved from the LDAP server. If no roles are specified, user will not be able to perform any actions after authentication. If any of the listed roles is not defined locally at the time of authentication, the authenthication attept will fail as if the provided password was incorrect.
**Example**
``` xml
<ldap>
<server>my_ldap_server</server>
<roles>
<my_local_role1 />
<my_local_role2 />
</roles>
</ldap>
```
[Original article](https://clickhouse.tech/docs/en/operations/server_configuration_parameters/settings/) <!--hide-->

88
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@ -307,7 +307,51 @@ Disabled by default.
## input_format_tsv_enum_as_number {#settings-input_format_tsv_enum_as_number}
For TSV input format switches to parsing enum values as enum ids.
Enables or disables parsing enum values as enum ids for TSV input format.
Possible values:
- 0 — Enum values are parsed as values.
- 1 — Enum values are parsed as enum IDs
Default value: 0.
**Example**
Consider the table:
```sql
CREATE TABLE table_with_enum_column_for_tsv_insert (Id Int32,Value Enum('first' = 1, 'second' = 2)) ENGINE=Memory();
```
When the `input_format_tsv_enum_as_number` setting is enabled:
```sql
SET input_format_tsv_enum_as_number = 1;
INSERT INTO table_with_enum_column_for_tsv_insert FORMAT TSV 102 2;
INSERT INTO table_with_enum_column_for_tsv_insert FORMAT TSV 103 1;
SELECT * FROM table_with_enum_column_for_tsv_insert;
```
Result:
```text
┌──Id─┬─Value──┐
│ 102 │ second │
└─────┴────────┘
┌──Id─┬─Value──┐
│ 103 │ first │
└─────┴────────┘
```
When the `input_format_tsv_enum_as_number` setting is disabled, the `INSERT` query:
```sql
SET input_format_tsv_enum_as_number = 0;
INSERT INTO table_with_enum_column_for_tsv_insert FORMAT TSV 102 2;
```
throws an exception.
## input_format_null_as_default {#settings-input-format-null-as-default}
@ -1182,7 +1226,47 @@ For CSV input format enables or disables parsing of unquoted `NULL` as literal (
## input_format_csv_enum_as_number {#settings-input_format_csv_enum_as_number}
For CSV input format switches to parsing enum values as enum ids.
Enables or disables parsing enum values as enum ids for CSV input format.
Possible values:
- 0 — Enum values are parsed as values.
- 1 — Enum values are parsed as enum IDs.
Default value: 0.
**Examples**
Consider the table:
```sql
CREATE TABLE table_with_enum_column_for_csv_insert (Id Int32,Value Enum('first' = 1, 'second' = 2)) ENGINE=Memory();
```
When the `input_format_csv_enum_as_number` setting is enabled:
```sql
SET input_format_csv_enum_as_number = 1;
INSERT INTO table_with_enum_column_for_csv_insert FORMAT CSV 102,2;
SELECT * FROM table_with_enum_column_for_csv_insert;
```
Result:
```text
┌──Id─┬─Value─────┐
│ 102 │ second │
└─────┴───────────┘
```
When the `input_format_csv_enum_as_number` setting is disabled, the `INSERT` query:
```sql
SET input_format_csv_enum_as_number = 0;
INSERT INTO table_with_enum_column_for_csv_insert FORMAT CSV 102,2;
```
throws an exception.
## output_format_csv_crlf_end_of_line {#settings-output-format-csv-crlf-end-of-line}

2
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@ -50,8 +50,6 @@ ClickHouse-specific aggregate functions:
- [skewPop](../../../sql-reference/aggregate-functions/reference/skewpop.md)
- [kurtSamp](../../../sql-reference/aggregate-functions/reference/kurtsamp.md)
- [kurtPop](../../../sql-reference/aggregate-functions/reference/kurtpop.md)
- [timeSeriesGroupSum](../../../sql-reference/aggregate-functions/reference/timeseriesgroupsum.md)
- [timeSeriesGroupRateSum](../../../sql-reference/aggregate-functions/reference/timeseriesgroupratesum.md)
- [uniq](../../../sql-reference/aggregate-functions/reference/uniq.md)
- [uniqExact](../../../sql-reference/aggregate-functions/reference/uniqexact.md)
- [uniqCombined](../../../sql-reference/aggregate-functions/reference/uniqcombined.md)

16
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@ -1,16 +0,0 @@
---
toc_priority: 171
---
# timeSeriesGroupRateSum {#agg-function-timeseriesgroupratesum}
Syntax: `timeSeriesGroupRateSum(uid, ts, val)`
Similarly to [timeSeriesGroupSum](../../../sql-reference/aggregate-functions/reference/timeseriesgroupsum.md), `timeSeriesGroupRateSum` calculates the rate of time-series and then sum rates together.
Also, timestamp should be in ascend order before use this function.
Applying this function to the data from the `timeSeriesGroupSum` example, you get the following result:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```

57
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@ -1,57 +0,0 @@
---
toc_priority: 170
---
# timeSeriesGroupSum {#agg-function-timeseriesgroupsum}
Syntax: `timeSeriesGroupSum(uid, timestamp, value)`
`timeSeriesGroupSum` can aggregate different time series that sample timestamp not alignment.
It will use linear interpolation between two sample timestamp and then sum time-series together.
- `uid` is the time series unique id, `UInt64`.
- `timestamp` is Int64 type in order to support millisecond or microsecond.
- `value` is the metric.
The function returns array of tuples with `(timestamp, aggregated_value)` pairs.
Before using this function make sure `timestamp` is in ascending order.
Example:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
And the result will be:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```

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@ -337,9 +337,23 @@ SELECT toDate('2016-12-27') AS date, toYearWeek(date) AS yearWeek0, toYearWeek(d
└────────────┴───────────┴───────────┴───────────┘
```
## date_trunc(datepart, time_or_data\[, time_zone\]), dateTrunc(datepart, time_or_data\[, time_zone\]) {#date_trunc}
## date_trunc {#date_trunc}
Truncates date and time data to the specified part of date.
**Syntax**
``` sql
date_trunc(unit, value[, timezone])
```
Alias: `dateTrunc`.
**Parameters**
- `unit` — Part of date. [String](../syntax.md#syntax-string-literal).
Possible values:
Truncates a date or date with time based on the specified datepart, such as
- `second`
- `minute`
- `hour`
@ -349,14 +363,98 @@ Truncates a date or date with time based on the specified datepart, such as
- `quarter`
- `year`
- `value` — Date and time. [DateTime](../../sql-reference/data-types/datetime.md) or [DateTime64](../../sql-reference/data-types/datetime64.md).
- `timezone` — [Timezone name](../../operations/server-configuration-parameters/settings.md#server_configuration_parameters-timezone) for the returned value (optional). If not specified, the function uses the timezone of the `value` parameter. [String](../../sql-reference/data-types/string.md).
**Returned value**
- Value, truncated to the specified part of date.
Type: [Datetime](../../sql-reference/data-types/datetime.md).
**Example**
Query without timezone:
``` sql
SELECT date_trunc('hour', now())
SELECT now(), date_trunc('hour', now());
```
## now {#now}
Result:
Accepts zero or one arguments(timezone) and returns the current time at one of the moments of request execution, or current time of specific timezone at one of the moments of request execution if `timezone` argument provided.
This function returns a constant, even if the request took a long time to complete.
``` text
┌───────────────now()─┬─date_trunc('hour', now())─┐
│ 2020-09-28 10:40:45 │ 2020-09-28 10:00:00 │
└─────────────────────┴───────────────────────────┘
```
Query with the specified timezone:
```sql
SELECT now(), date_trunc('hour', now(), 'Europe/Moscow');
```
Result:
```text
┌───────────────now()─┬─date_trunc('hour', now(), 'Europe/Moscow')─┐
│ 2020-09-28 10:46:26 │ 2020-09-28 13:00:00 │
└─────────────────────┴────────────────────────────────────────────┘
```
**See also**
- [toStartOfInterval](#tostartofintervaltime-or-data-interval-x-unit-time-zone)
# now {#now}
Returns the current date and time.
**Syntax**
``` sql
now([timezone])
```
**Parameters**
- `timezone` — [Timezone name](../../operations/server-configuration-parameters/settings.md#server_configuration_parameters-timezone) for the returned value (optional). [String](../../sql-reference/data-types/string.md).
**Returned value**
- Current date and time.
Type: [Datetime](../../sql-reference/data-types/datetime.md).
**Example**
Query without timezone:
``` sql
SELECT now();
```
Result:
``` text
┌───────────────now()─┐
│ 2020-10-17 07:42:09 │
└─────────────────────┘
```
Query with the specified timezone:
``` sql
SELECT now('Europe/Moscow');
```
Result:
``` text
┌─now('Europe/Moscow')─┐
│ 2020-10-17 10:42:23 │
└──────────────────────┘
```
## today {#today}

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@ -0,0 +1,381 @@
---
toc_priority: 67
toc_title: Encryption
---
# Encryption functions {#encryption-functions}
These functions implement encryption and decryption of data with AES (Advanced Encryption Standard) algorithm.
Key length depends on encryption mode. It is 16, 24, and 32 bytes long for `-128-`, `-196-`, and `-256-` modes respectively.
Initialization vector length is always 16 bytes (bytes in excess of 16 are ignored).
Note that these functions work slowly.
## encrypt {#encrypt}
This function encrypts data using these modes:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
- aes-128-gcm, aes-192-gcm, aes-256-gcm
**Syntax**
``` sql
encrypt('mode', 'plaintext', 'key' [, iv, aad])
```
**Parameters**
- `mode` — Encryption mode. [String](../../sql-reference/data-types/string.md#string).
- `plaintext` — Text thats need to be encrypted. [String](../../sql-reference/data-types/string.md#string).
- `key` — Encryption key. [String](../../sql-reference/data-types/string.md#string).
- `iv` — Initialization vector. Required for `-gcm` modes, optinal for others. [String](../../sql-reference/data-types/string.md#string).
- `aad` — Additional authenticated data. It isn't encrypted, but it affects decryption. Works only in `-gcm` modes, for others would throw an exception. [String](../../sql-reference/data-types/string.md#string).
**Returned value**
- Ciphered String. [String](../../sql-reference/data-types/string.md#string).
**Examples**
Create this table:
Query:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Insert this data:
Query:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Example without `iv`:
Query:
``` sql
SELECT 'aes-128-ecb' AS mode, hex(encrypt(mode, input, key16)) FROM encryption_test;
```
Result:
``` text
┌─mode────────┬─hex(encrypt('aes-128-ecb', input, key16))────────────────────────┐
│ aes-128-ecb │ 4603E6862B0D94BBEC68E0B0DF51D60F │
│ aes-128-ecb │ 3004851B86D3F3950672DE7085D27C03 │
│ aes-128-ecb │ E807F8C8D40A11F65076361AFC7D8B68D8658C5FAA6457985CAA380F16B3F7E4 │
└─────────────┴──────────────────────────────────────────────────────────────────┘
```
Example with `iv`:
Query:
``` sql
SELECT 'aes-256-ctr' AS mode, hex(encrypt(mode, input, key32, iv)) FROM encryption_test;
```
Result:
``` text
┌─mode────────┬─hex(encrypt('aes-256-ctr', input, key32, iv))─┐
│ aes-256-ctr │ │
│ aes-256-ctr │ 7FB039F7 │
│ aes-256-ctr │ 5CBD20F7ABD3AC41FCAA1A5C0E119E2B325949 │
└─────────────┴───────────────────────────────────────────────┘
```
Example with `-gcm`:
Query:
``` sql
SELECT 'aes-256-gcm' AS mode, hex(encrypt(mode, input, key32, iv)) FROM encryption_test;
```
Result:
``` text
┌─mode────────┬─hex(encrypt('aes-256-gcm', input, key32, iv))──────────────────────────┐
│ aes-256-gcm │ E99DBEBC01F021758352D7FBD9039EFA │
│ aes-256-gcm │ 8742CE3A7B0595B281C712600D274CA881F47414 │
│ aes-256-gcm │ A44FD73ACEB1A64BDE2D03808A2576EDBB60764CC6982DB9AF2C33C893D91B00C60DC5 │
└─────────────┴────────────────────────────────────────────────────────────────────────┘
```
Example with `-gcm` mode and with `aad`:
Query:
``` sql
SELECT 'aes-192-gcm' AS mode, hex(encrypt(mode, input, key24, iv, 'AAD')) FROM encryption_test;
```
Result:
``` text
┌─mode────────┬─hex(encrypt('aes-192-gcm', input, key24, iv, 'AAD'))───────────────────┐
│ aes-192-gcm │ 04C13E4B1D62481ED22B3644595CB5DB │
│ aes-192-gcm │ 9A6CF0FD2B329B04EAD18301818F016DF8F77447 │
│ aes-192-gcm │ B961E9FD9B940EBAD7ADDA75C9F198A40797A5EA1722D542890CC976E21113BBB8A7AA │
└─────────────┴────────────────────────────────────────────────────────────────────────┘
```
## aes_encrypt_mysql {#aes_encrypt_mysql}
Compatible with mysql encryption and can be decrypted with [AES_DECRYPT](https://dev.mysql.com/doc/refman/8.0/en/encryption-functions.html#function_aes-decrypt) function.
Supported encryption modes:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
**Syntax**
```sql
aes_encrypt_mysql('mode', 'plaintext', 'key' [, iv])
```
**Parameters**
- `mode` — Encryption mode. [String](../../sql-reference/data-types/string.md#string).
- `plaintext` — Text that needs to be encrypted. [String](../../sql-reference/data-types/string.md#string).
- `key` — Encryption key. [String](../../sql-reference/data-types/string.md#string).
- `iv` — Initialization vector. Optinal. [String](../../sql-reference/data-types/string.md#string).
**Returned value**
- Ciphered String. [String](../../sql-reference/data-types/string.md#string).
**Examples**
Create this table:
Query:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Insert this data:
Query:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Example without `iv`:
Query:
``` sql
SELECT 'aes-128-cbc' AS mode, hex(aes_encrypt_mysql(mode, input, key32)) FROM encryption_test;
```
Result:
``` text
┌─mode────────┬─hex(aes_encrypt_mysql('aes-128-cbc', input, key32))──────────────┐
│ aes-128-cbc │ FEA8CFDE6EE2C6E7A2CC6ADDC9F62C83 │
│ aes-128-cbc │ 78B16CD4BE107660156124C5FEE6454A │
│ aes-128-cbc │ 67C0B119D96F18E2823968D42871B3D179221B1E7EE642D628341C2B29BA2E18 │
└─────────────┴──────────────────────────────────────────────────────────────────┘
```
Example with `iv`:
Query:
``` sql
SELECT 'aes-256-cfb128' AS mode, hex(aes_encrypt_mysql(mode, input, key32, iv)) FROM encryption_test;
```
Result:
``` text
┌─mode───────────┬─hex(aes_encrypt_mysql('aes-256-cfb128', input, key32, iv))─┐
│ aes-256-cfb128 │ │
│ aes-256-cfb128 │ 7FB039F7 │
│ aes-256-cfb128 │ 5CBD20F7ABD3AC41FCAA1A5C0E119E2BB5174F │
└────────────────┴────────────────────────────────────────────────────────────┘
```
## decrypt {#decrypt}
This function decrypts data using these modes:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
- aes-128-gcm, aes-192-gcm, aes-256-gcm
**Syntax**
```sql
decrypt('mode', 'ciphertext', 'key' [, iv, aad])
```
**Parameters**
- `mode` — Decryption mode. [String](../../sql-reference/data-types/string.md#string).
- `ciphertext` — Encrypted text that needs to be decrypted. [String](../../sql-reference/data-types/string.md#string).
- `key` — Decryption key. [String](../../sql-reference/data-types/string.md#string).
- `iv` — Initialization vector. Required for `-gcm` modes, optinal for others. [String](../../sql-reference/data-types/string.md#string).
- `aad` — Additional authenticated data. Won't decrypt if this value is incorrect. Works only in `-gcm` modes, for others would throw an exception. [String](../../sql-reference/data-types/string.md#string).
**Returned value**
- Decrypted String. [String](../../sql-reference/data-types/string.md#string).
**Examples**
Create this table:
Query:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Insert this data:
Query:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Query:
``` sql
SELECT 'aes-128-ecb' AS mode, decrypt(mode, encrypt(mode, input, key16), key16) FROM encryption_test;
```
Result:
```text
┌─mode────────┬─decrypt('aes-128-ecb', encrypt('aes-128-ecb', input, key16), key16)─┐
│ aes-128-ecb │ │
│ aes-128-ecb │ text │
│ aes-128-ecb │ What Is ClickHouse? │
└─────────────┴─────────────────────────────────────────────────────────────────────┘
```
## aes_decrypt_mysql {#aes_decrypt_mysql}
Compatible with mysql encryption and decrypts data encrypted with [AES_ENCRYPT](https://dev.mysql.com/doc/refman/8.0/en/encryption-functions.html#function_aes-encrypt) function.
Supported decryption modes:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
**Syntax**
```sql
aes_decrypt_mysql('mode', 'ciphertext', 'key' [, iv])
```
**Parameters**
- `mode` — Decryption mode. [String](../../sql-reference/data-types/string.md#string).
- `ciphertext` — Encrypted text that needs to be decrypted. [String](../../sql-reference/data-types/string.md#string).
- `key` — Decryption key. [String](../../sql-reference/data-types/string.md#string).
- `iv` — Initialization vector. Optinal. [String](../../sql-reference/data-types/string.md#string).
**Returned value**
- Decrypted String. [String](../../sql-reference/data-types/string.md#string).
**Examples**
Create this table:
Query:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Insert this data:
Query:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Query:
``` sql
SELECT 'aes-128-cbc' AS mode, aes_decrypt_mysql(mode, aes_encrypt_mysql(mode, input, key), key) FROM encryption_test;
```
Result:
``` text
┌─mode────────┬─aes_decrypt_mysql('aes-128-cbc', aes_encrypt_mysql('aes-128-cbc', input, key), key)─┐
│ aes-128-cbc │ │
│ aes-128-cbc │ text │
│ aes-128-cbc │ What Is ClickHouse? │
└─────────────┴─────────────────────────────────────────────────────────────────────────────────────┘
```
[Original article](https://clickhouse.tech/docs/en/sql-reference/functions/encryption_functions/) <!--hide-->

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@ -306,3 +306,67 @@ execute_native_thread_routine
start_thread
clone
```
## tid {#tid}
Returns id of the thread, in which current [Block](https://clickhouse.tech/docs/en/development/architecture/#block) is processed.
**Syntax**
``` sql
tid()
```
**Returned value**
- Current thread id. [Uint64](../../sql-reference/data-types/int-uint.md#uint-ranges).
**Example**
Query:
``` sql
SELECT tid();
```
Result:
``` text
┌─tid()─┐
│ 3878 │
└───────┘
```
## logTrace {#logtrace}
Emits trace log message to server log for each [Block](https://clickhouse.tech/docs/en/development/architecture/#block).
**Syntax**
``` sql
logTrace('message')
```
**Parameters**
- `message` — Message that is emitted to server log. [String](../../sql-reference/data-types/string.md#string).
**Returned value**
- Always returns 0.
**Example**
Query:
``` sql
SELECT logTrace('logTrace message');
```
Result:
``` text
┌─logTrace('logTrace message')─┐
│ 0 │
└──────────────────────────────┘
```
[Original article](https://clickhouse.tech/docs/en/query_language/functions/introspection/) <!--hide-->

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@ -325,7 +325,59 @@ This function accepts a number or date or date with time, and returns a FixedStr
## reinterpretAsUUID {#reinterpretasuuid}
This function accepts FixedString, and returns UUID. Takes 16 bytes string. If the string isn't long enough, the functions work as if the string is padded with the necessary number of null bytes to the end. If the string longer than 16 bytes, the extra bytes at the end are ignored.
This function accepts 16 bytes string, and returns UUID containing bytes representing the corresponding value in network byte order (big-endian). If the string isn't long enough, the functions work as if the string is padded with the necessary number of null bytes to the end. If the string longer than 16 bytes, the extra bytes at the end are ignored.
**Syntax**
``` sql
reinterpretAsUUID(fixed_string)
```
**Parameters**
- `fixed_string` — Big-endian byte string. [FixedString](../../sql-reference/data-types/fixedstring.md#fixedstring).
**Returned value**
- The UUID type value. [UUID](../../sql-reference/data-types/uuid.md#uuid-data-type).
**Examples**
String to UUID.
Query:
``` sql
SELECT reinterpretAsUUID(reverse(unhex('000102030405060708090a0b0c0d0e0f')))
```
Result:
``` text
┌─reinterpretAsUUID(reverse(unhex('000102030405060708090a0b0c0d0e0f')))─┐
│ 08090a0b-0c0d-0e0f-0001-020304050607 │
└───────────────────────────────────────────────────────────────────────┘
```
Going back and forth from String to UUID.
Query:
``` sql
WITH
generateUUIDv4() AS uuid,
identity(lower(hex(reverse(reinterpretAsString(uuid))))) AS str,
reinterpretAsUUID(reverse(unhex(str))) AS uuid2
SELECT uuid = uuid2;
```
Result:
``` text
┌─equals(uuid, uuid2)─┐
│ 1 │
└─────────────────────┘
```
## CAST(x, T) {#type_conversion_function-cast}

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@ -204,7 +204,7 @@ SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
## Managing ReplicatedMergeTree Tables {#query-language-system-replicated}
ClickHouse can manage background replication related processes in [ReplicatedMergeTree](../../engines/table-engines/mergetree-family/replacingmergetree.md) tables.
ClickHouse can manage background replication related processes in [ReplicatedMergeTree](../../engines/table-engines/mergetree-family/replication/#table_engines-replication) tables.
### STOP FETCHES {#query_language-system-stop-fetches}

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@ -57,7 +57,7 @@ Identifiers are:
Identifiers can be quoted or non-quoted. The latter is preferred.
Non-quoted identifiers must match the regex `^[a-zA-Z_][0-9a-zA-Z_]*$` and can not be equal to [keywords](#syntax-keywords). Examples: `x, _1, X_y__Z123_.`
Non-quoted identifiers must match the regex `^[0-9a-zA-Z_]*[a-zA-Z_]$` and can not be equal to [keywords](#syntax-keywords). Examples: `x, _1, X_y__Z123_.`
If you want to use identifiers the same as keywords or you want to use other symbols in identifiers, quote it using double quotes or backticks, for example, `"id"`, `` `id` ``.

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@ -5,7 +5,7 @@ toc_title: null function
# null {#null-function}
Accepts an inserted data of the specified structure and immediately drops it away. The function is used for convenience writing tests and demonstrations.
Creates a temporary table of the specified structure with the [Null](../../engines/table-engines/special/null.md) table engine. According to the `Null`-engine properties, the table data is ignored and the table itself is immediately droped right after the query execution. The function is used for the convenience of test writing and demonstrations.
**Syntax**
@ -19,7 +19,7 @@ null('structure')
**Returned value**
A table with the specified structure, which is dropped right after the query execution.
A temporary `Null`-engine table with the specified structure.
**Example**
@ -36,6 +36,8 @@ INSERT INTO t SELECT * FROM numbers_mt(1000000000);
DROP TABLE IF EXISTS t;
```
See also: format **Null**.
See also:
- [Null table engine](../../engines/table-engines/special/null.md)
[Original article](https://clickhouse.tech/docs/en/sql-reference/table-functions/null/) <!--hide-->

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@ -464,69 +464,6 @@ The kurtosis of the given distribution. Type — [Float64](../../sql-reference/d
SELECT kurtSamp(value) FROM series_with_value_column
```
## Para obtener más información, consulta nuestra Política de privacidad y nuestras Condiciones de uso) {#agg-function-timeseriesgroupsum}
`timeSeriesGroupSum` puede agregar diferentes series de tiempo que muestran la marca de tiempo no la alineación.
Utilizará la interpolación lineal entre dos marcas de tiempo de muestra y luego sumará series temporales juntas.
- `uid` es la identificación única de la serie temporal, `UInt64`.
- `timestamp` es el tipo Int64 para admitir milisegundos o microsegundos.
- `value` es la métrica.
La función devuelve una matriz de tuplas con `(timestamp, aggregated_value)` par.
Antes de utilizar esta función, asegúrese de `timestamp` está en orden ascendente.
Ejemplo:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
Y el resultado será:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
## También puede utilizar el siguiente ejemplo:) {#agg-function-timeseriesgroupratesum}
De manera similar a `timeSeriesGroupSum`, `timeSeriesGroupRateSum` calcula la tasa de series temporales y luego suma las tasas juntas.
Además, la marca de tiempo debe estar en orden ascendente antes de usar esta función.
Aplicando esta función a los datos del `timeSeriesGroupSum` ejemplo, se obtiene el siguiente resultado:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
## Acerca de) {#agg_function-avg}
Calcula el promedio.

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@ -464,69 +464,6 @@ The kurtosis of the given distribution. Type — [جسم شناور64](../../sql
SELECT kurtSamp(value) FROM series_with_value_column
```
## هشدار داده می شود) {#agg-function-timeseriesgroupsum}
`timeSeriesGroupSum` می توانید سری های زمانی مختلف که برچسب زمان نمونه هم ترازی جمع نمی.
این برون یابی خطی بین دو برچسب زمان نمونه و سپس مجموع زمان سری با هم استفاده کنید.
- `uid` سری زمان شناسه منحصر به فرد است, `UInt64`.
- `timestamp` است نوع درون64 به منظور حمایت میلی ثانیه یا میکروثانیه.
- `value` متریک است.
تابع گرداند مجموعه ای از تاپل با `(timestamp, aggregated_value)` جفت
قبل از استفاده از این تابع اطمینان حاصل کنید `timestamp` به ترتیب صعودی است.
مثال:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
و نتیجه خواهد بود:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
## هشدار داده می شود) {#agg-function-timeseriesgroupratesum}
به طور مشابه به `timeSeriesGroupSum`, `timeSeriesGroupRateSum` محاسبه نرخ زمان سری و سپس مجموع نرخ با هم.
همچنین, برچسب زمان باید در جهت صعود قبل از استفاده از این تابع باشد.
استفاده از این تابع به داده ها از `timeSeriesGroupSum` مثال, شما نتیجه زیر را دریافت کنید:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
## میانگین) {#agg_function-avg}
محاسبه متوسط.

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@ -464,69 +464,6 @@ The kurtosis of the given distribution. Type — [Float64](../../sql-reference/d
SELECT kurtSamp(value) FROM series_with_value_column
```
## timeSeriesGroupSum(uid, horodatage, valeur) {#agg-function-timeseriesgroupsum}
`timeSeriesGroupSum` peut agréger différentes séries temporelles qui échantillonnent l'horodatage et non l'alignement.
Il utilisera une interpolation linéaire entre deux échantillons d'horodatage, puis additionnera les séries temporelles ensemble.
- `uid` la série temporelle est elle unique, `UInt64`.
- `timestamp` est de type Int64 afin de prendre en charge la milliseconde ou la microseconde.
- `value` est la métrique.
La fonction renvoie un tableau de tuples avec `(timestamp, aggregated_value)` pair.
Avant d'utiliser cette fonction, assurez-vous `timestamp` est dans l'ordre croissant.
Exemple:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
Et le résultat sera:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
## timeSeriesGroupRateSum(uid, ts, val) {#agg-function-timeseriesgroupratesum}
De la même manière à `timeSeriesGroupSum`, `timeSeriesGroupRateSum` calcule le taux de séries chronologiques, puis additionne les taux ensemble.
En outre, l'horodatage doit être dans l'ordre croissant avant d'utiliser cette fonction.
Application de cette fonction aux données du `timeSeriesGroupSum` exemple, vous obtenez le résultat suivant:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
## avg (x) {#agg_function-avg}
Calcule la moyenne.

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SELECT kurtSamp(value) FROM series_with_value_column
```
## timeSeriesGroupSum(uid,タイムスタンプ,値) {#agg-function-timeseriesgroupsum}
`timeSeriesGroupSum` 総異なる時系列のサンプルのタイムスタンプなアライメントを実施します。
これは、二つのサンプルタイムスタンプ間の線形補間を使用して、一緒に時系列を合計します。
- `uid` 時系列は一意のidですか, `UInt64`.
- `timestamp` ミリ秒またはマイクロ秒をサポートするためにInt64型です。
- `value` は指標です。
この関数は、次のような組の配列を返します `(timestamp, aggregated_value)` ペア。
この関数を使用する前に、必ず `timestamp` 昇順です。
例:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
結果は次のようになります:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
## タイムセリエスグロプラテスム(uid,ts,val) {#agg-function-timeseriesgroupratesum}
同様に `timeSeriesGroupSum`, `timeSeriesGroupRateSum` 時系列のレートを計算し、レートを合計します。
また、timestampはこの関数を使用する前に上昇順にする必要があります。
のデータにこの関数を適用します。 `timeSeriesGroupSum` 例では、次の結果が得られます:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
## avg(x) {#agg_function-avg}
平均を計算します。

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@ -1068,4 +1068,45 @@ ClickHouse использует ZooKeeper для хранения метадан
- [Управление доступом](../access-rights.md#access-control)
## user_directories {#user_directories}
Секция конфигурационного файла,которая содержит настройки:
- Путь к конфигурационному файлу с предустановленными пользователями.
- Путь к файлу, в котором содержатся пользователи, созданные при помощи SQL команд.
Если эта секция определена, путь из [users_config](../../operations/server-configuration-parameters/settings.md#users-config) и [access_control_path](../../operations/server-configuration-parameters/settings.md#access_control_path) не используется.
Секция `user_directories` может содержать любое количество элементов, порядок расположения элементов обозначает их приоритет (чем выше элемент, тем выше приоритет).
**Пример**
``` xml
<user_directories>
<users_xml>
<path>/etc/clickhouse-server/users.xml</path>
</users_xml>
<local_directory>
<path>/var/lib/clickhouse/access/</path>
</local_directory>
</user_directories>
```
Также вы можете указать настройку `memory` — означает хранение информации только в памяти, без записи на диск, и `ldap` — означает хранения информации на [LDAP-сервере](https://en.wikipedia.org/wiki/Lightweight_Directory_Access_Protocol).
Чтобы добавить LDAP-сервер в качестве удаленного каталога пользователей, которые не определены локально, определите один раздел `ldap` со следующими параметрами:
- `server` — имя одного из LDAP-серверов, определенных в секции `ldap_servers` конфигурациионного файла. Этот параметр явялется необязательным и может быть пустым.
- `roles` — раздел со списком локально определенных ролей, которые будут назначены каждому пользователю, полученному с LDAP-сервера. Если роли не заданы, пользователь не сможет выполнять никаких действий после аутентификации. Если какая-либо из перечисленных ролей не определена локально во время проверки подлинности, попытка проверки подлинности завершится неудачей, как если бы предоставленный пароль был неверным.
**Пример**
``` xml
<ldap>
<server>my_ldap_server</server>
<roles>
<my_local_role1 />
<my_local_role2 />
</roles>
</ldap>
```
[Оригинальная статья](https://clickhouse.tech/docs/ru/operations/server_configuration_parameters/settings/) <!--hide-->

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@ -289,6 +289,54 @@ INSERT INTO test VALUES (lower('Hello')), (lower('world')), (lower('INSERT')), (
Disabled by default.
## input_format_tsv_enum_as_number {#settings-input_format_tsv_enum_as_number}
Включает или отключает парсинг значений перечислений как идентификаторов перечислений для входного формата TSV.
Возможные значения:
- 0 — парсинг значений перечисления как значений.
- 1 — парсинг значений перечисления как идентификаторов перечисления.
Значение по умолчанию: 0.
**Пример**
Рассмотрим таблицу:
```sql
CREATE TABLE table_with_enum_column_for_tsv_insert (Id Int32,Value Enum('first' = 1, 'second' = 2)) ENGINE=Memory();
```
При включенной настройке `input_format_tsv_enum_as_number`:
```sql
SET input_format_tsv_enum_as_number = 1;
INSERT INTO table_with_enum_column_for_tsv_insert FORMAT TSV 102 2;
INSERT INTO table_with_enum_column_for_tsv_insert FORMAT TSV 103 1;
SELECT * FROM table_with_enum_column_for_tsv_insert;
```
Результат:
```text
┌──Id─┬─Value──┐
│ 102 │ second │
└─────┴────────┘
┌──Id─┬─Value──┐
│ 103 │ first │
└─────┴────────┘
```
При отключенной настройке `input_format_tsv_enum_as_number` запрос `INSERT`:
```sql
SET input_format_tsv_enum_as_number = 0;
INSERT INTO table_with_enum_column_for_tsv_insert FORMAT TSV 102 2;
```
сгенерирует исключение.
## input_format_null_as_default {#settings-input-format-null-as-default}
Включает или отключает использование значений по умолчанию в случаях, когда во входных данных содержится `NULL`, но тип соответствующего столбца не `Nullable(T)` (для текстовых форматов).
@ -1127,6 +1175,50 @@ SELECT area/period FROM account_orders FORMAT JSON;
Для формата CSV включает или выключает парсинг неэкранированной строки `NULL` как литерала (синоним для `\N`)
## input_format_csv_enum_as_number {#settings-input_format_csv_enum_as_number}
Включает или отключает парсинг значений перечислений как идентификаторов перечислений для входного формата CSV.
Возможные значения:
- 0 — парсинг значений перечисления как значений.
- 1 — парсинг значений перечисления как идентификаторов перечисления.
Значение по умолчанию: 0.
**Пример**
Рассмотрим таблицу:
```sql
CREATE TABLE table_with_enum_column_for_csv_insert (Id Int32,Value Enum('first' = 1, 'second' = 2)) ENGINE=Memory();
```
При включенной настройке `input_format_csv_enum_as_number`:
```sql
SET input_format_csv_enum_as_number = 1;
INSERT INTO table_with_enum_column_for_csv_insert FORMAT CSV 102,2;
SELECT * FROM table_with_enum_column_for_csv_insert;
```
Результат:
```text
┌──Id─┬─Value──┐
│ 102 │ second │
└─────┴────────┘
```
При отключенной настройке `input_format_csv_enum_as_number` запрос `INSERT`:
```sql
SET input_format_csv_enum_as_number = 0;
INSERT INTO table_with_enum_column_for_csv_insert FORMAT CSV 102,2;
```
сгенерирует исключение.
## output_format_csv_crlf_end_of_line {#settings-output-format-csv-crlf-end-of-line}
Использовать в качестве разделителя строк для CSV формата CRLF (DOS/Windows стиль) вместо LF (Unix стиль).

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@ -45,8 +45,6 @@ toc_hidden: true
- [skewPop](../../../sql-reference/aggregate-functions/reference/skewpop.md)
- [kurtSamp](../../../sql-reference/aggregate-functions/reference/kurtsamp.md)
- [kurtPop](../../../sql-reference/aggregate-functions/reference/kurtpop.md)
- [timeSeriesGroupSum](../../../sql-reference/aggregate-functions/reference/timeseriesgroupsum.md)
- [timeSeriesGroupRateSum](../../../sql-reference/aggregate-functions/reference/timeseriesgroupratesum.md)
- [uniq](../../../sql-reference/aggregate-functions/reference/uniq.md)
- [uniqExact](../../../sql-reference/aggregate-functions/reference/uniqexact.md)
- [uniqCombined](../../../sql-reference/aggregate-functions/reference/uniqcombined.md)

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@ -1,18 +0,0 @@
---
toc_priority: 171
---
# timeSeriesGroupRateSum {#agg-function-timeseriesgroupratesum}
Синтаксис: `timeSeriesGroupRateSum(uid, ts, val)`
Аналогично timeSeriesGroupSum, timeSeriesGroupRateSum будет вычислять производные по timestamp для рядов, а затем суммировать полученные производные для всех рядов для одного значения timestamp.
Также ряды должны быть отсортированы по возрастанию timestamp.
Для пример из описания timeSeriesGroupSum результат будет следующим:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
[Оригинальная статья](https://clickhouse.tech/docs/en/sql-reference/aggregate-functions/reference/timeseriesgroupratesum/) <!--hide-->

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@ -1,59 +0,0 @@
---
toc_priority: 170
---
# timeSeriesGroupSum {#agg-function-timeseriesgroupsum}
Синтаксис: `timeSeriesGroupSum(uid, timestamp, value)`
`timeSeriesGroupSum` агрегирует временные ряды в которых не совпадают моменты.
Функция использует линейную интерполяцию между двумя значениями времени, а затем суммирует значения для одного и того же момента (как измеренные так и интерполированные) по всем рядам.
- `uid` уникальный идентификатор временного ряда, `UInt64`.
- `timestamp` имеет тип `Int64` чтобы можно было учитывать милли и микросекунды.
- `value` представляет собой значение метрики.
Функция возвращает массив кортежей с парами `(timestamp, aggregated_value)`.
Временные ряды должны быть отсортированы по возрастанию `timestamp`.
Пример:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
И результат будет:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
[Оригинальная статья](https://clickhouse.tech/docs/en/sql-reference/aggregate-functions/reference/timeseriesgroupsum/) <!--hide-->

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@ -1157,6 +1157,7 @@ SELECT arrayCumSum([1, 1, 1, 1]) AS res
┌─res──────────┐
│ [1, 2, 3, 4] │
└──────────────┘
```
## arrayAUC {#arrayauc}

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@ -234,10 +234,124 @@ WITH toDateTime64('2020-01-01 10:20:30.999', 3) AS dt64 SELECT toStartOfSecond(d
Переводит дату-с-временем в номер секунды, начиная с некоторого фиксированного момента в прошлом.
## date_trunc {#date_trunc}
Отсекает от даты и времени части, меньшие чем указанная часть.
**Синтаксис**
``` sql
date_trunc(unit, value[, timezone])
```
Синоним: `dateTrunc`.
**Параметры**
- `unit` — Название части даты или времени. [String](../syntax.md#syntax-string-literal).
Возможные значения:
- `second`
- `minute`
- `hour`
- `day`
- `week`
- `month`
- `quarter`
- `year`
- `value` — Дата и время. [DateTime](../../sql-reference/data-types/datetime.md) или [DateTime64](../../sql-reference/data-types/datetime64.md).
- `timezone` — [Часовой пояс](../../operations/server-configuration-parameters/settings.md#server_configuration_parameters-timezone) для возвращаемого значения (необязательно). Если параметр не задан, используется часовой пояс параметра `value`. [String](../../sql-reference/data-types/string.md)
**Возвращаемое значение**
- Дата и время, отсеченные до указанной части.
Тип: [Datetime](../../sql-reference/data-types/datetime.md).
**Примеры**
Запрос без указания часового пояса:
``` sql
SELECT now(), date_trunc('hour', now());
```
Результат:
``` text
┌───────────────now()─┬─date_trunc('hour', now())─┐
│ 2020-09-28 10:40:45 │ 2020-09-28 10:00:00 │
└─────────────────────┴───────────────────────────┘
```
Запрос с указанием часового пояса:
```sql
SELECT now(), date_trunc('hour', now(), 'Europe/Moscow');
```
Результат:
```text
┌───────────────now()─┬─date_trunc('hour', now(), 'Europe/Moscow')─┐
│ 2020-09-28 10:46:26 │ 2020-09-28 13:00:00 │
└─────────────────────┴────────────────────────────────────────────┘
```
**См. также**
- [toStartOfInterval](#tostartofintervaltime-or-data-interval-x-unit-time-zone)
## now {#now}
Принимает ноль аргументов и возвращает текущее время на один из моментов выполнения запроса.
Функция возвращает константу, даже если запрос выполнялся долго.
Возвращает текущую дату и время.
**Синтаксис**
``` sql
now([timezone])
```
**Параметры**
- `timezone` — [часовой пояс](../../operations/server-configuration-parameters/settings.md#server_configuration_parameters-timezone) для возвращаемого значения (необязательно). [String](../../sql-reference/data-types/string.md)
**Возвращаемое значение**
- Текущие дата и время.
Тип: [Datetime](../../sql-reference/data-types/datetime.md).
**Пример**
Запрос без указания часового пояса:
``` sql
SELECT now();
```
Результат:
``` text
┌───────────────now()─┐
│ 2020-10-17 07:42:09 │
└─────────────────────┘
```
Запрос с указанием часового пояса:
``` sql
SELECT now('Europe/Moscow');
```
Результат:
``` text
┌─now('Europe/Moscow')─┐
│ 2020-10-17 10:42:23 │
└──────────────────────┘
```
## today {#today}

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@ -0,0 +1,382 @@
---
toc_priority: 67
toc_title: "\u0424\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043b\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f"
---
# Функции шифрования {#encryption-functions}
Даннвые функции реализуют шифрование и расшифровку данных с помощью AES (Advanced Encryption Standard) алгоритма.
Длина ключа зависит от режима шифрования. Он может быть длинной в 16, 24 и 32 байта для режимов шифрования `-128-`, `-196-` и `-256-` соответственно.
Длина инициализирующего вектора всегда 16 байт (лишнии байты игнорируются).
Обратите внимание, что эти функции работают медленно.
## encrypt {#encrypt}
Функция поддерживает шифрование данных следующими режимами:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
- aes-128-gcm, aes-192-gcm, aes-256-gcm
**Синтаксис**
``` sql
encrypt('mode', 'plaintext', 'key' [, iv, aad])
```
**Параметры**
- `mode` — режим шифрования. [String](../../sql-reference/data-types/string.md#string).
- `plaintext` — текст, который будет зашифрован. [String](../../sql-reference/data-types/string.md#string).
- `key` — ключ шифрования. [String](../../sql-reference/data-types/string.md#string).
- `iv` — инициализирующий вектор. Обязателен для `-gcm` режимов, для остальных режимов необязателен. [String](../../sql-reference/data-types/string.md#string).
- `aad` — дополнительные аутентифицированные данные. Не шифруются, но влияют на расшифровку. Параметр работает только с `-gcm` режимами. Для остальных вызовет исключение. [String](../../sql-reference/data-types/string.md#string).
**Возвращаемое значение**
- Зашифрованная строка. [String](../../sql-reference/data-types/string.md#string).
**Примеры**
Создадим такую таблицу:
Запрос:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Вставим эти данные:
Запрос:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Пример без `iv`:
Запрос:
``` sql
SELECT 'aes-128-ecb' AS mode, hex(encrypt(mode, input, key16)) FROM encryption_test;
```
Результат:
``` text
┌─mode────────┬─hex(encrypt('aes-128-ecb', input, key16))────────────────────────┐
│ aes-128-ecb │ 4603E6862B0D94BBEC68E0B0DF51D60F │
│ aes-128-ecb │ 3004851B86D3F3950672DE7085D27C03 │
│ aes-128-ecb │ E807F8C8D40A11F65076361AFC7D8B68D8658C5FAA6457985CAA380F16B3F7E4 │
└─────────────┴──────────────────────────────────────────────────────────────────┘
```
Пример с `iv`:
Запрос:
``` sql
SELECT 'aes-256-ctr' AS mode, hex(encrypt(mode, input, key32, iv)) FROM encryption_test;
```
Результат:
``` text
┌─mode────────┬─hex(encrypt('aes-256-ctr', input, key32, iv))─┐
│ aes-256-ctr │ │
│ aes-256-ctr │ 7FB039F7 │
│ aes-256-ctr │ 5CBD20F7ABD3AC41FCAA1A5C0E119E2B325949 │
└─────────────┴───────────────────────────────────────────────┘
```
Пример в режиме `-gcm`:
Запрос:
``` sql
SELECT 'aes-256-gcm' AS mode, hex(encrypt(mode, input, key32, iv)) FROM encryption_test;
```
Результат:
``` text
┌─mode────────┬─hex(encrypt('aes-256-gcm', input, key32, iv))──────────────────────────┐
│ aes-256-gcm │ E99DBEBC01F021758352D7FBD9039EFA │
│ aes-256-gcm │ 8742CE3A7B0595B281C712600D274CA881F47414 │
│ aes-256-gcm │ A44FD73ACEB1A64BDE2D03808A2576EDBB60764CC6982DB9AF2C33C893D91B00C60DC5 │
└─────────────┴────────────────────────────────────────────────────────────────────────┘
```
Пример в режиме `-gcm` и с `aad`:
Запрос:
``` sql
SELECT 'aes-192-gcm' AS mode, hex(encrypt(mode, input, key24, iv, 'AAD')) FROM encryption_test;
```
Результат:
``` text
┌─mode────────┬─hex(encrypt('aes-192-gcm', input, key24, iv, 'AAD'))───────────────────┐
│ aes-192-gcm │ 04C13E4B1D62481ED22B3644595CB5DB │
│ aes-192-gcm │ 9A6CF0FD2B329B04EAD18301818F016DF8F77447 │
│ aes-192-gcm │ B961E9FD9B940EBAD7ADDA75C9F198A40797A5EA1722D542890CC976E21113BBB8A7AA │
└─────────────┴────────────────────────────────────────────────────────────────────────┘
```
## aes_encrypt_mysql {#aes_encrypt_mysql}
Совместима с шифрованием myqsl, результат может быть расшифрован функцией [AES_DECRYPT](https://dev.mysql.com/doc/refman/8.0/en/encryption-functions.html#function_aes-decrypt).
Функция поддерживает шифрофание данных следующими режимами:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
**Синтаксис**
```sql
aes_encrypt_mysql('mode', 'plaintext', 'key' [, iv])
```
**Параметры**
- `mode` — режим шифрования. [String](../../sql-reference/data-types/string.md#string).
- `plaintext` — текст, который будет зашифрован. [String](../../sql-reference/data-types/string.md#string).
- `key` — ключ шифрования. [String](../../sql-reference/data-types/string.md#string).
- `iv` — инициализирующий вектор. Необязателен. [String](../../sql-reference/data-types/string.md#string).
**Возвращаемое значение**
- Зашифрованная строка. [String](../../sql-reference/data-types/string.md#string).
**Примеры**
Создадим такую таблицу:
Запрос:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Вставим эти данные:
Запрос:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Пример без `iv`:
Запрос:
``` sql
SELECT 'aes-128-cbc' AS mode, hex(aes_encrypt_mysql(mode, input, key32)) FROM encryption_test;
```
Результат:
``` text
┌─mode────────┬─hex(aes_encrypt_mysql('aes-128-cbc', input, key32))──────────────┐
│ aes-128-cbc │ FEA8CFDE6EE2C6E7A2CC6ADDC9F62C83 │
│ aes-128-cbc │ 78B16CD4BE107660156124C5FEE6454A │
│ aes-128-cbc │ 67C0B119D96F18E2823968D42871B3D179221B1E7EE642D628341C2B29BA2E18 │
└─────────────┴──────────────────────────────────────────────────────────────────┘
```
Пример с `iv`:
Запрос:
``` sql
SELECT 'aes-256-cfb128' AS mode, hex(aes_encrypt_mysql(mode, input, key32, iv)) FROM encryption_test;
```
Результат:
``` text
┌─mode───────────┬─hex(aes_encrypt_mysql('aes-256-cfb128', input, key32, iv))─┐
│ aes-256-cfb128 │ │
│ aes-256-cfb128 │ 7FB039F7 │
│ aes-256-cfb128 │ 5CBD20F7ABD3AC41FCAA1A5C0E119E2BB5174F │
└────────────────┴────────────────────────────────────────────────────────────┘
```
## decrypt {#decrypt}
Функция поддерживает расшифровку данных следующими режимами:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
- aes-128-gcm, aes-192-gcm, aes-256-gcm
**Синтаксис**
```sql
decrypt('mode', 'ciphertext', 'key' [, iv, aad])
```
**Параметры**
- `mode` — режим шифрования. [String](../../sql-reference/data-types/string.md#string).
- `ciphertext` — зашифрованный текст, который будет расшифрован. [String](../../sql-reference/data-types/string.md#string).
- `key` — ключ шифрования. [String](../../sql-reference/data-types/string.md#string).
- `iv` — инициализирующий вектор. Обязателен для `-gcm` режимов, для остальных режимов опциональный. [String](../../sql-reference/data-types/string.md#string).
- `aad` — дополнительные аутентифицированные данные. Текст не будет расшифрован, если это значение неверно. Работает только с `-gcm` режимами. Для остальных вызовет исключение. [String](../../sql-reference/data-types/string.md#string).
**Возвращаемое значение**
- Расшифрованная строка. [String](../../sql-reference/data-types/string.md#string).
**Примеры**
Создадим такую таблицу:
Запрос:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Вставим эти данные:
Запрос:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Запрос:
``` sql
SELECT 'aes-128-ecb' AS mode, decrypt(mode, encrypt(mode, input, key16), key16) FROM encryption_test;
```
Результат:
```text
┌─mode────────┬─decrypt('aes-128-ecb', encrypt('aes-128-ecb', input, key16), key16)─┐
│ aes-128-ecb │ │
│ aes-128-ecb │ text │
│ aes-128-ecb │ What Is ClickHouse? │
└─────────────┴─────────────────────────────────────────────────────────────────────┘
```
## aes_decrypt_mysql {#aes_decrypt_mysql}
Совместима с шифрованием myqsl и может расшифровать данные, зашифрованные функцией [AES_ENCRYPT](https://dev.mysql.com/doc/refman/8.0/en/encryption-functions.html#function_aes-encrypt).
Функция поддерживает расшифровку данных следующими режимами:
- aes-128-ecb, aes-192-ecb, aes-256-ecb
- aes-128-cbc, aes-192-cbc, aes-256-cbc
- aes-128-cfb1, aes-192-cfb1, aes-256-cfb1
- aes-128-cfb8, aes-192-cfb8, aes-256-cfb8
- aes-128-cfb128, aes-192-cfb128, aes-256-cfb128
- aes-128-ofb, aes-192-ofb, aes-256-ofb
**Синтаксис**
```sql
aes_decrypt_mysql('mode', 'ciphertext', 'key' [, iv])
```
**Параметры**
- `mode` — режим шифрования. [String](../../sql-reference/data-types/string.md#string).
- `ciphertext` — зашифрованный текст, который будет расшифрован. [String](../../sql-reference/data-types/string.md#string).
- `key` — ключ шифрования. [String](../../sql-reference/data-types/string.md#string).
- `iv` — инициализирующий вектор. Необязателен. [String](../../sql-reference/data-types/string.md#string).
**Возвращаемое значение**
- Расшифрованная строка. [String](../../sql-reference/data-types/string.md#string).
**Примеры**
Создадим такую таблицу:
Запрос:
``` sql
CREATE TABLE encryption_test
(
input String,
key String DEFAULT unhex('fb9958e2e897ef3fdb49067b51a24af645b3626eed2f9ea1dc7fd4dd71b7e38f9a68db2a3184f952382c783785f9d77bf923577108a88adaacae5c141b1576b0'),
iv String DEFAULT unhex('8CA3554377DFF8A369BC50A89780DD85'),
key32 String DEFAULT substring(key, 1, 32),
key24 String DEFAULT substring(key, 1, 24),
key16 String DEFAULT substring(key, 1, 16)
) Engine = Memory;
```
Вставим эти данные:
Запрос:
``` sql
INSERT INTO encryption_test (input) VALUES (''), ('text'), ('What Is ClickHouse?');
```
Запрос:
``` sql
SELECT 'aes-128-cbc' AS mode, aes_decrypt_mysql(mode, aes_encrypt_mysql(mode, input, key), key) FROM encryption_test;
```
Результат:
``` text
┌─mode────────┬─aes_decrypt_mysql('aes-128-cbc', aes_encrypt_mysql('aes-128-cbc', input, key), key)─┐
│ aes-128-cbc │ │
│ aes-128-cbc │ text │
│ aes-128-cbc │ What Is ClickHouse? │
└─────────────┴─────────────────────────────────────────────────────────────────────────────────────┘
```
[Original article](https://clickhouse.tech/docs/ru/sql-reference/functions/encryption_functions/) <!--hide-->

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@ -306,3 +306,68 @@ execute_native_thread_routine
start_thread
clone
```
## tid {#tid}
Возвращает id потока, в котором обрабатывается текущий [Block](https://clickhouse.tech/docs/ru/development/architecture/#block).
**Синтаксис**
``` sql
tid()
```
**Возвращаемое значение**
- Id текущего потока. [Uint64](../../sql-reference/data-types/int-uint.md#uint-ranges).
**Пример**
Запрос:
``` sql
SELECT tid();
```
Результат:
``` text
┌─tid()─┐
│ 3878 │
└───────┘
```
## logTrace {#logtrace}
Выводит сообщение в лог сервера для каждого [Block](https://clickhouse.tech/docs/ru/development/architecture/#block).
**Синтаксис**
``` sql
logTrace('message')
```
**Параметры**
- `message` — сообщение, которое отправляется в серверный лог. [String](../../sql-reference/data-types/string.md#string).
**Возвращаемое значение**
- Всегда возвращает 0.
**Example**
Запрос:
``` sql
SELECT logTrace('logTrace message');
```
Результат:
``` text
┌─logTrace('logTrace message')─┐
│ 0 │
└──────────────────────────────┘
```
[Original article](https://clickhouse.tech/docs/en/query_language/functions/introspection/) <!--hide-->

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@ -319,6 +319,62 @@ SELECT toFixedString('foo\0bar', 8) AS s, toStringCutToZero(s) AS s_cut
Функция принимает число или дату или дату-с-временем и возвращает строку, содержащую байты, представляющие соответствующее значение в host order (little endian). При этом, отбрасываются нулевые байты с конца. Например, значение 255 типа UInt32 будет строкой длины 1 байт.
## reinterpretAsUUID {#reinterpretasuuid}
Функция принимает шестнадцатибайтную строку и интерпретирует ее байты в network order (big-endian). Если строка имеет недостаточную длину, то функция работает так, как будто строка дополнена необходимым количетсвом нулевых байт с конца. Если строка длиннее, чем шестнадцать байт, то игнорируются лишние байты с конца.
**Синтаксис**
``` sql
reinterpretAsUUID(fixed_string)
```
**Параметры**
- `fixed_string` — cтрока с big-endian порядком байтов. [FixedString](../../sql-reference/data-types/fixedstring.md#fixedstring).
**Возвращаемое значение**
- Значение типа [UUID](../../sql-reference/data-types/uuid.md#uuid-data-type).
**Примеры**
Интерпретация строки как UUID.
Запрос:
``` sql
SELECT reinterpretAsUUID(reverse(unhex('000102030405060708090a0b0c0d0e0f')))
```
Результат:
``` text
┌─reinterpretAsUUID(reverse(unhex('000102030405060708090a0b0c0d0e0f')))─┐
│ 08090a0b-0c0d-0e0f-0001-020304050607 │
└───────────────────────────────────────────────────────────────────────┘
```
Переход в UUID и обратно.
Запрос:
``` sql
WITH
generateUUIDv4() AS uuid,
identity(lower(hex(reverse(reinterpretAsString(uuid))))) AS str,
reinterpretAsUUID(reverse(unhex(str))) AS uuid2
SELECT uuid = uuid2;
```
Результат:
``` text
┌─equals(uuid, uuid2)─┐
│ 1 │
└─────────────────────┘
```
## CAST(x, T) {#type_conversion_function-cast}
Преобразует x в тип данных t.

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@ -0,0 +1,43 @@
---
toc_priority: 53
toc_title: null функция
---
# null {#null-function}
Создает временную таблицу указанной структуры с движком [Null](../../engines/table-engines/special/null.md). В соответствии со свойствами движка, данные в таблице игнорируются, а сама таблица удаляется сразу после выполнения запроса. Функция используется для удобства написания тестов и демонстрационных примеров.
**Синтаксис**
``` sql
null('structure')
```
**Параметр**
- `structure` — список колонок и их типов. [String](../../sql-reference/data-types/string.md).
**Возвращаемое значение**
Временная таблица указанной структуры с движком `Null`.
**Пример**
Один запрос с функцией `null`:
``` sql
INSERT INTO function null('x UInt64') SELECT * FROM numbers_mt(1000000000);
```
заменяет три запроса:
```sql
CREATE TABLE t (x UInt64) ENGINE = Null;
INSERT INTO t SELECT * FROM numbers_mt(1000000000);
DROP TABLE IF EXISTS t;
```
См. также:
- [Движок таблиц Null](../../engines/table-engines/special/null.md)
[Original article](https://clickhouse.tech/docs/en/sql-reference/table-functions/null/) <!--hide-->

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@ -21,7 +21,7 @@ mkdocs-htmlproofer-plugin==0.0.3
mkdocs-macros-plugin==0.4.20
nltk==3.5
nose==1.3.7
protobuf==3.13.0
protobuf==3.14.0
numpy==1.19.2
Pygments==2.5.2
pymdown-extensions==8.0

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@ -464,69 +464,6 @@ The kurtosis of the given distribution. Type — [Float64](../../sql-reference/d
SELECT kurtSamp(value) FROM series_with_value_column
```
## timeSeriesGroupSum(uıd, zaman damgası, değer) {#agg-function-timeseriesgroupsum}
`timeSeriesGroupSum` örnek zaman damgası değil hizalama farklı zaman serileri toplayabilir.
İki örnek zaman damgası arasında doğrusal enterpolasyon kullanacak ve daha sonra zaman serilerini birlikte toplayacaktır.
- `uid` zaman serisi benzersiz kimliği mi, `UInt64`.
- `timestamp` milisaniye veya mikrosaniye desteklemek için Int64 türüdür.
- `value` metr .iktir.
İşlev, tuples dizisini döndürür `(timestamp, aggregated_value)` çiftliler.
Bu işlevi kullanmadan önce emin olun `timestamp` artan düzende.
Örnek:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
Ve sonuç olacak:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
## timeSeriesGroupRateSum(uıd, ts, val) {#agg-function-timeseriesgroupratesum}
Benzer şekilde `timeSeriesGroupSum`, `timeSeriesGroupRateSum` zaman serilerinin oranını hesaplar ve daha sonra toplam oranları birlikte hesaplar.
Ayrıca, bu işlevi kullanmadan önce zaman damgası yükseliş sırasına göre olmalıdır.
Bu fonksiyon dataun ver theiye uygulanması `timeSeriesGroupSum` örnek, aşağıdaki sonucu alırsınız:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
## avg (x) {#agg_function-avg}
Ortalama hesaplar.

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@ -2,17 +2,17 @@
machine_translated: true
machine_translated_rev: 5decc73b5dc60054f19087d3690c4eb99446a6c3
toc_priority: 3
toc_title: "\u788C\u83BD\u7984Support:"
toc_title: "\u5546\u4e1a\u652f\u6301"
---
# ClickHouse商业支持服务提供商 {#clickhouse-commercial-support-service-providers}
!!! info "信息"
如果您已经推出ClickHouse商业支持服务，请随时 [打开拉取请求](https://github.com/ClickHouse/ClickHouse/edit/master/docs/en/commercial/support.md) 将其添加到以下列表。
如果您已经推出ClickHouse商业支持服务，请随时 [提交一个 pull-request](https://github.com/ClickHouse/ClickHouse/edit/master/docs/en/commercial/support.md) 将其添加到以下列表。
## 敏锐性 {#altinity}
## Altinity {#altinity}
隆隆隆隆路虏脢..陇.貌.垄拢卢虏禄and陇.貌路.隆拢脳枚脢虏 隆隆隆隆路虏脢..陇.貌.垄拢卢虏禄.陇 访问 [www.altinity.com](https://www.altinity.com/) 欲了解更多信息.
Altinity 自从 2017 年开始已经为企业提供 ClickHouse 支持服务。Altinity 的客户范围包含百强企业到初创企业。访问 [www.altinity.com](https://www.altinity.com/) 了解更多信息。
## Mafiree {#mafiree}

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@ -43,7 +43,7 @@ $ cd ..
为此，请创建以下文件：
/图书馆/LaunchDaemons/限制.maxfilesplist:
/资源库/LaunchDaemons/limit.maxfiles.plist:
``` xml
<?xml version="1.0" encoding="UTF-8"?>

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`Log` 引擎为表中的每一列使用不同的文件。`StripeLog` 将所有的数据存储在一个文件中。因此 `StripeLog` 引擎在操作系统中使用更少的描述符，但是 `Log` 引擎提供更高的读性能。
`TingLog` 引擎是该系列中最简单的引擎并且提供了最少的功能和最低的性能。`TingLog` 引擎不支持并行读取和并发数据访问，并将每一列存储在不同的文件中。它比其余两种支持并行读取的引擎的读取速度更慢，并且使用了和 `Log` 引擎同样多的描述符。你可以在简单的低负载的情景下使用它。
`TinyLog` 引擎是该系列中最简单的引擎并且提供了最少的功能和最低的性能。`TinyLog` 引擎不支持并行读取和并发数据访问，并将每一列存储在不同的文件中。它比其余两种支持并行读取的引擎的读取速度更慢，并且使用了和 `Log` 引擎同样多的描述符。你可以在简单的低负载的情景下使用它。
[来源文章](https://clickhouse.tech/docs/en/operations/table_engines/log_family/) <!--hide-->

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@ -1,5 +1,5 @@
# 日志 {#log}
# Log {#log}
日志与 TinyLog 的不同之处在于，«标记» 的小文件与列文件存在一起。这些标记写在每个数据块上，并且包含偏移量，这些偏移量指示从哪里开始读取文件以便跳过指定的行数。这使得可以在多个线程中读取表数据。对于并发数据访问，可以同时执行读取操作，而写入操作则阻塞读取和其它写入。Log 引擎不支持索引。同样，如果写入表失败，则该表将被破坏，并且从该表读取将返回错误。Log 引擎适用于临时数据，write-once 表以及测试或演示目的。
`Log` 与 `TinyLog` 的不同之处在于，«标记» 的小文件与列文件存在一起。这些标记写在每个数据块上，并且包含偏移量，这些偏移量指示从哪里开始读取文件以便跳过指定的行数。这使得可以在多个线程中读取表数据。对于并发数据访问，可以同时执行读取操作，而写入操作则阻塞读取和其它写入。`Log`引擎不支持索引。同样，如果写入表失败，则该表将被破坏，并且从该表读取将返回错误。`Log`引擎适用于临时数据，write-once 表以及测试或演示目的。
[原始文章](https://clickhouse.tech/docs/zh/operations/table_engines/log/) <!--hide-->

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# 数据备份 {#data-backup}
碌莽禄While: [复制](../engines/table-engines/mergetree-family/replication.md) provides protection from hardware failures, it does not protect against human errors: accidental deletion of data, deletion of the wrong table or a table on the wrong cluster, and software bugs that result in incorrect data processing or data corruption. In many cases mistakes like these will affect all replicas. ClickHouse has built-in safeguards to prevent some types of mistakes — for example, by default [您不能使用类似MergeTree的引擎删除包含超过50Gb数据的表](https://github.com/ClickHouse/ClickHouse/blob/v18.14.18-stable/programs/server/config.xml#L322-L330). 但是，这些保障措施并不涵盖所有可能的情况，可以规避。
尽管[副本](../engines/table-engines/mergetree-family/replication.md) 可以预防硬件错误带来的数据丢失, 但是它不能防止人为操作的错误: 意外删除数据, 删除错误的 table 或者删除错误 cluster 上的 table, 可以导致错误数据处理错误或者数据损坏的 bugs. 这类意外可能会影响所有的副本. ClickHouse 有内建的保障措施可以预防一些错误 — 例如, 默认情况下[您不能使用类似MergeTree的引擎删除包含超过50Gb数据的表](https://github.com/ClickHouse/ClickHouse/blob/v18.14.18-stable/programs/server/config.xml#L322-L330). 但是，这些保障措施不能涵盖所有可能的情况，并且可以规避。
为了有效地减少可能的人为错误，您应该仔细准备备份和还原数据的策略 **提前**.
为了有效地减少可能的人为错误，您应该 **提前**准备备份和还原数据的策略.
每家公司都有不同的可用资源和业务需求，因此没有适合各种情况的ClickHouse备份和恢复通用解决方案。 什么适用于一千兆字节的数据可能不会为几十pb的工作。 有多种可能的方法有自己的优点和缺点，这将在下面讨论。 这是一个好主意，使用几种方法，而不是只是一个，以弥补其各种缺点。
不同公司有不同的可用资源和业务需求，因此没有适合各种情况的ClickHouse备份和恢复通用解决方案。 适用于 1GB 的数据的方案可能并不适用于几十 PB 数据的情况。 有多种可能的并有自己优缺点的方法，这将在下面讨论。 好的主意是同时结合使用多种方法而不是仅使用一种，这样可以弥补不同方法各自的缺点。
!!! note "注"
请记住，如果您备份了某些内容并且从未尝试过还原它，那么当您实际需要它时（或者至少需要比业务能够容忍的时间更长），恢复可能无法正常工作。 因此，无论您选择哪种备份方法，请确保自动还原过程，并定期在备用ClickHouse群集上练习。
## 将源数据复制到其他地方 {#duplicating-source-data-somewhere-else}
通常被摄入到ClickHouse的数据是通过某种持久队列传递的，例如 [Apache Kafka](https://kafka.apache.org). 在这种情况下，可以配置一组额外的订阅服务器，这些订阅服务器将在写入ClickHouse时读取相同的数据流，并将其存储在冷存储中。 大多数公司已经有一些默认的推荐冷存储，可能是对象存储或分布式文件系统，如 [HDFS](https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html).
通常被聚集到ClickHouse的数据是通过某种持久队列传递的，例如 [Apache Kafka](https://kafka.apache.org). 在这种情况下，可以配置一组额外的订阅服务器，这些订阅服务器将在写入ClickHouse时读取相同的数据流，并将其存储在冷存储中。 大多数公司已经有一些默认的推荐冷存储，可能是对象存储或分布式文件系统，如 [HDFS](https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html).
## 文件系统快照 {#filesystem-snapshots}
某些本地文件系统提供快照功能（例如, [ZFS](https://en.wikipedia.org/wiki/ZFS)），但它们可能不是提供实时查询的最佳选择。 一个可能的解决方案是使用这种文件系统创建额外的副本，并将它们从 [分布](../engines/table-engines/special/distributed.md) 用于以下目的的表 `SELECT` 查询。 任何修改数据的查询都无法访问此类副本上的快照。 作为奖励，这些副本可能具有特殊的硬件配置，每个服务器附加更多的磁盘，这将是经济高效的。
## ﾂ环板-ｮﾂ嘉ｯﾂ偲 {#clickhouse-copier}
## clickhouse-copier {#clickhouse-copier}
[ﾂ环板-ｮﾂ嘉ｯﾂ偲](utilities/clickhouse-copier.md) 是一个多功能工具，最初创建用于重新分片pb大小的表。 它还可用于备份和还原目的，因为它可以在ClickHouse表和集群之间可靠地复制数据。
[clickhouse-copier](utilities/clickhouse-copier.md) 是一个多功能工具，最初创建用于重新分片pb大小的表。 因为它可以在ClickHouse表和集群之间可靠地复制数据，所以它还可用于备份和还原数据。
对于较小的数据量，一个简单的 `INSERT INTO ... SELECT ...` 到远程表也可以工作。
## 部件操作 {#manipulations-with-parts}
ClickHouse允许使用 `ALTER TABLE ... FREEZE PARTITION ...` 查询以创建表分区的本地副本。 这是使用硬链接来实现 `/var/lib/clickhouse/shadow/` 文件夹中，所以它通常不会占用旧数据的额外磁盘空间。 创建的文件副本不由ClickHouse服务器处理，所以你可以把它们留在那里：你将有一个简单的备份，不需要任何额外的外部系统，但它仍然会容易出现硬件问题。 出于这个原因，最好将它们远程复制到另一个位置，然后删除本地副本。 分布式文件系统和对象存储仍然是一个不错的选择，但是具有足够大容量的正常附加文件服务器也可以工作（在这种情况下，传输将通过网络文件系统 [rsync](https://en.wikipedia.org/wiki/Rsync)).
ClickHouse允许使用 `ALTER TABLE ... FREEZE PARTITION ...` 查询以创建表分区的本地副本。 这是利用硬链接(hardlink)到 `/var/lib/clickhouse/shadow/` 文件夹中实现的，所以它通常不会占用旧数据的额外磁盘空间。 创建的文件副本不由ClickHouse服务器处理，所以你可以把它们留在那里：你将有一个简单的备份，不需要任何额外的外部系统，但它仍然会容易出现硬件问题。 出于这个原因，最好将它们远程复制到另一个位置，然后删除本地副本。 分布式文件系统和对象存储仍然是一个不错的选择，但是具有足够大容量的正常附加文件服务器也可以工作（在这种情况下，传输将通过网络文件系统 [rsync](https://en.wikipedia.org/wiki/Rsync)).
数据可以使用 `ALTER TABLE ... ATTACH PARTITION ...` 从备份中恢复。
有关与分区操作相关的查询的详细信息，请参阅 [更改文档](../sql-reference/statements/alter.md#alter_manipulations-with-partitions).
第三方工具可用于自动化此方法: [ﾂ环板backupｮﾂ嘉ｯﾂ偲](https://github.com/AlexAkulov/clickhouse-backup).
第三方工具可用于自动化此方法: [clickhouse-backup](https://github.com/AlexAkulov/clickhouse-backup).
[原始文章](https://clickhouse.tech/docs/en/operations/backup/) <!--hide-->

34
docs/zh/operations/tips.md
View File

@ -11,9 +11,9 @@
不要禁用超线程。 它有助于某些查询，但不适用于其他查询。
## 涡轮增压 {#turbo-boost}
## 超频 {#turbo-boost}
强烈推荐涡轮增压。 它显着提高了典型负载的性能。
强烈推荐超频(turbo-boost)。 它显着提高了典型负载的性能。
您可以使用 `turbostat` 要查看负载下的CPU的实际时钟速率。
## CPU缩放调控器 {#cpu-scaling-governor}
@ -39,18 +39,18 @@ echo 'performance' | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_gover
始终禁用交换文件。 不这样做的唯一原因是，如果您使用的ClickHouse在您的个人笔记本电脑。
## 巨大的页面 {#huge-pages}
## 大页(Huge Pages) {#huge-pages}
始终禁用透明巨大的页面。 它会干扰内存分alloc，从而导致显着的性能下降。
始终禁用透明大页(transparent huge pages)。 它会干扰内存分alloc，从而导致显着的性能下降。
``` bash
echo 'never' | sudo tee /sys/kernel/mm/transparent_hugepage/enabled
```
使用 `perf top` 观看内核中用于内存管理的时间。
永久巨大的页面也不需要被分配。
使用 `perf top` 观察内核中用于内存管理的时间。
永久大页(permanent huge pages)也不需要被分配。
## 存储子系统 {#storage-subsystem}
## 存储系统 {#storage-subsystem}
如果您的预算允许您使用SSD，请使用SSD。
如果没有，请使用硬盘。 SATA硬盘7200转就行了。
@ -100,27 +100,27 @@ XFS也是合适的，但它还没有经过ClickHouse的彻底测试。
如果可能的话，至少使用一个10GB的网络。 1Gb也可以工作，但对于使用数十tb的数据修补副本或处理具有大量中间数据的分布式查询，情况会更糟。
## 动物园管理员 {#zookeeper}
## Zookeeper {#zookeeper}
您可能已经将ZooKeeper用于其他目的。 您可以使用相同的zookeeper安装，如果它还没有超载。
It’s best to use a fresh version of ZooKeeper – 3.4.9 or later. The version in stable Linux distributions may be outdated.
最好使用新版本的 Zookeeper – 3.4.9 或之后的版本. 稳定 Liunx 发行版中的 Zookeeper 版本可能是落后的。
You should never use manually written scripts to transfer data between different ZooKeeper clusters, because the result will be incorrect for sequential nodes. Never use the «zkcopy» utility for the same reason: https://github.com/ksprojects/zkcopy/issues/15
你永远不该使用自己手写的脚本在不同的 Zookeeper 集群之间转移数据, 这可能会导致序列节点的数据不正确。出于同样的原因，永远不要使用 zkcopy 工具: https://github.com/ksprojects/zkcopy/issues/15
如果要将现有ZooKeeper集群分为两个，正确的方法是增加其副本的数量，然后将其重新配置为两个独立的集群。
不要在与ClickHouse相同的服务器上运行ZooKeeper。 由于ZooKeeper对延迟非常敏感，ClickHouse可能会利用所有可用的系统资源。
不要在与ClickHouse相同的服务器上运行ZooKeeper。 因为ZooKeeper对延迟非常敏感，而ClickHouse可能会占用所有可用的系统资源。
使用默认设置，ZooKeeper是一个定时炸弹:
默认设置下，ZooKeeper 就像是一个定时炸弹:
> 使用默认配置时，ZooKeeper服务器不会从旧快照和日志中删除文件（请参阅autopurge），这是操作员的责任。
当使用默认配置时，ZooKeeper服务不会从旧快照和日志中删除文件（请参阅autopurge），这是操作员的责任。
必须拆除炸弹
必须拆除炸弹。
下面的ZooKeeper（3.5.1）配置在Yandex中使用。梅地卡生产环境截至2017年5月20日:
下面的ZooKeeper（3.5.1）配置在 Yandex.Metrica 的生产环境中使用截至2017年5月20日:
动物园cfg:
zoo.cfg:
``` bash
# http://hadoop.apache.org/zookeeper/docs/current/zookeeperAdmin.html
@ -222,7 +222,7 @@ JAVA_OPTS="-Xms{{ '{{' }} cluster.get('xms','128M') {{ '}}' }} \
-XX:+CMSParallelRemarkEnabled"
```
盐初始化:
Salt init:
description "zookeeper-{{ '{{' }} cluster['name'] {{ '}}' }} centralized coordination service"

63
docs/zh/sql-reference/aggregate-functions/reference.md
View File

@ -462,69 +462,6 @@ kurtSamp(expr)
SELECT kurtSamp(value) FROM series_with_value_column
```
## timeSeriesGroupSum(uid,timestamp,value) {#agg-function-timeseriesgroupsum}
`timeSeriesGroupSum` 可以聚合不同的时间序列，即采样时间戳不对齐。
它将在两个采样时间戳之间使用线性插值，然后将时间序列和在一起。
- `uid` 是时间序列唯一id, `UInt64`.
- `timestamp` 是Int64型，以支持毫秒或微秒。
- `value` 是指标。
函数返回元组数组 `(timestamp, aggregated_value)` 对。
在使用此功能之前，请确保 `timestamp` 按升序排列
示例:
``` text
┌─uid─┬─timestamp─┬─value─┐
│ 1 │ 2 │ 0.2 │
│ 1 │ 7 │ 0.7 │
│ 1 │ 12 │ 1.2 │
│ 1 │ 17 │ 1.7 │
│ 1 │ 25 │ 2.5 │
│ 2 │ 3 │ 0.6 │
│ 2 │ 8 │ 1.6 │
│ 2 │ 12 │ 2.4 │
│ 2 │ 18 │ 3.6 │
│ 2 │ 24 │ 4.8 │
└─────┴───────────┴───────┘
```
``` sql
CREATE TABLE time_series(
uid UInt64,
timestamp Int64,
value Float64
) ENGINE = Memory;
INSERT INTO time_series VALUES
(1,2,0.2),(1,7,0.7),(1,12,1.2),(1,17,1.7),(1,25,2.5),
(2,3,0.6),(2,8,1.6),(2,12,2.4),(2,18,3.6),(2,24,4.8);
SELECT timeSeriesGroupSum(uid, timestamp, value)
FROM (
SELECT * FROM time_series order by timestamp ASC
);
```
其结果将是:
``` text
[(2,0.2),(3,0.9),(7,2.1),(8,2.4),(12,3.6),(17,5.1),(18,5.4),(24,7.2),(25,2.5)]
```
## timeSeriesGroupRateSum(uid,ts,val) {#agg-function-timeseriesgroupratesum}
同样 `timeSeriesGroupSum`, `timeSeriesGroupRateSum` 计算时间序列的速率，然后将速率总和在一起。
此外，使用此函数之前，时间戳应该是上升顺序。
应用此功能从数据 `timeSeriesGroupSum` 例如，您将得到以下结果:
``` text
[(2,0),(3,0.1),(7,0.3),(8,0.3),(12,0.3),(17,0.3),(18,0.3),(24,0.3),(25,0.1)]
```
## avg(x) {#agg_function-avg}
计算平均值。

13
programs/benchmark/Benchmark.cpp
View File

@ -49,7 +49,6 @@ using Ports = std::vector<UInt16>;
namespace ErrorCodes
{
extern const int CANNOT_BLOCK_SIGNAL;
extern const int BAD_ARGUMENTS;
extern const int EMPTY_DATA_PASSED;
}
@ -103,17 +102,7 @@ public:
/// (example: when using stage = 'with_mergeable_state')
registerAggregateFunctions();
if (stage == "complete")
query_processing_stage = QueryProcessingStage::Complete;
else if (stage == "fetch_columns")
query_processing_stage = QueryProcessingStage::FetchColumns;
else if (stage == "with_mergeable_state")
query_processing_stage = QueryProcessingStage::WithMergeableState;
else if (stage == "with_mergeable_state_after_aggregation")
query_processing_stage = QueryProcessingStage::WithMergeableStateAfterAggregation;
else
throw Exception("Unknown query processing stage: " + stage, ErrorCodes::BAD_ARGUMENTS);
query_processing_stage = QueryProcessingStage::fromString(stage);
}
void initialize(Poco::Util::Application & self [[maybe_unused]]) override

21
programs/client/Client.cpp
View File

@ -54,6 +54,7 @@
#include <IO/WriteHelpers.h>
#include <IO/Operators.h>
#include <IO/UseSSL.h>
#include <IO/WriteBufferFromOStream.h>
#include <DataStreams/AsynchronousBlockInputStream.h>
#include <DataStreams/AddingDefaultsBlockInputStream.h>
#include <DataStreams/InternalTextLogsRowOutputStream.h>
@ -223,6 +224,7 @@ private:
/// We will format query_id in interactive mode in various ways, the default is just to print Query id: ...
std::vector<std::pair<String, String>> query_id_formats;
QueryProcessingStage::Enum query_processing_stage;
void initialize(Poco::Util::Application & self) override
{
@ -1158,13 +1160,13 @@ private:
ASTPtr ast_to_process;
try
{
std::stringstream dump_before_fuzz;
WriteBufferFromOwnString dump_before_fuzz;
fuzz_base->dumpTree(dump_before_fuzz);
auto base_before_fuzz = fuzz_base->formatForErrorMessage();
ast_to_process = fuzz_base->clone();
std::stringstream dump_of_cloned_ast;
WriteBufferFromOwnString dump_of_cloned_ast;
ast_to_process->dumpTree(dump_of_cloned_ast);
// Run the original query as well.
@ -1186,7 +1188,9 @@ private:
fprintf(stderr, "dump of cloned ast:\n%s\n",
dump_of_cloned_ast.str().c_str());
fprintf(stderr, "dump after fuzz:\n");
fuzz_base->dumpTree(std::cerr);
WriteBufferFromOStream cerr_buf(std::cerr, 4096);
fuzz_base->dumpTree(cerr_buf);
cerr_buf.next();
fmt::print(stderr, "IAST::clone() is broken for some AST node. This is a bug. The original AST ('dump before fuzz') and its cloned copy ('dump of cloned AST') refer to the same nodes, which must never happen. This means that their parent node doesn't implement clone() correctly.");
@ -1441,7 +1445,7 @@ private:
connection_parameters.timeouts,
query_to_send,
context.getCurrentQueryId(),
QueryProcessingStage::Complete,
query_processing_stage,
&context.getSettingsRef(),
&context.getClientInfo(),
true);
@ -1482,7 +1486,7 @@ private:
connection_parameters.timeouts,
query_to_send,
context.getCurrentQueryId(),
QueryProcessingStage::Complete,
query_processing_stage,
&context.getSettingsRef(),
&context.getClientInfo(),
true);
@ -1529,7 +1533,9 @@ private:
if (is_interactive)
{
std::cout << std::endl;
formatAST(*res, std::cout);
WriteBufferFromOStream res_buf(std::cout, 4096);
formatAST(*res, res_buf);
res_buf.next();
std::cout << std::endl << std::endl;
}
@ -2304,6 +2310,7 @@ public:
("password", po::value<std::string>()->implicit_value("\n", ""), "password")
("ask-password", "ask-password")
("quota_key", po::value<std::string>(), "A string to differentiate quotas when the user have keyed quotas configured on server")
("stage", po::value<std::string>()->default_value("complete"), "Request query processing up to specified stage: complete,fetch_columns,with_mergeable_state,with_mergeable_state_after_aggregation")
("query_id", po::value<std::string>(), "query_id")
("query,q", po::value<std::string>(), "query")
("database,d", po::value<std::string>(), "database")
@ -2428,6 +2435,8 @@ public:
if (options.count("config-file") && options.count("config"))
throw Exception("Two or more configuration files referenced in arguments", ErrorCodes::BAD_ARGUMENTS);
query_processing_stage = QueryProcessingStage::fromString(options["stage"].as<std::string>());
/// Save received data into the internal config.
if (options.count("config-file"))
config().setString("config-file", options["config-file"].as<std::string>());

5
programs/client/QueryFuzzer.cpp
View File

@ -8,6 +8,7 @@
#include <Core/Types.h>
#include <IO/Operators.h>
#include <IO/UseSSL.h>
#include <IO/WriteBufferFromOStream.h>
#include <Parsers/ASTExpressionList.h>
#include <Parsers/ASTFunction.h>
#include <Parsers/ASTIdentifier.h>
@ -419,7 +420,9 @@ void QueryFuzzer::fuzzMain(ASTPtr & ast)
fuzz(ast);
std::cout << std::endl;
formatAST(*ast, std::cout, false /*highlight*/);
WriteBufferFromOStream ast_buf(std::cout, 4096);
formatAST(*ast, ast_buf, false /*highlight*/);
ast_buf.next();
std::cout << std::endl << std::endl;
}

2
programs/client/Suggest.cpp
View File

@ -86,7 +86,7 @@ Suggest::Suggest()
void Suggest::loadImpl(Connection & connection, const ConnectionTimeouts & timeouts, size_t suggestion_limit)
{
std::stringstream query;
std::stringstream query; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
query << "SELECT DISTINCT arrayJoin(extractAll(name, '[\\\\w_]{2,}')) AS res FROM ("
"SELECT name FROM system.functions"
" UNION ALL "

2
programs/client/TestHint.h
View File

@ -93,7 +93,7 @@ private:
void parse(const String & hint)
{
std::stringstream ss;
std::stringstream ss; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
ss << hint;
String item;

2
programs/copier/ClusterCopier.cpp
View File

@ -162,7 +162,7 @@ void ClusterCopier::discoverShardPartitions(const ConnectionTimeouts & timeouts,
if (!missing_partitions.empty())
{
std::stringstream ss;
WriteBufferFromOwnString ss;
for (const String & missing_partition : missing_partitions)
ss << " " << missing_partition;

2
programs/copier/Internals.cpp
View File

@ -13,7 +13,7 @@ using ConfigurationPtr = Poco::AutoPtr<Poco::Util::AbstractConfiguration>;
ConfigurationPtr getConfigurationFromXMLString(const std::string & xml_data)
{
std::stringstream ss(xml_data);
std::stringstream ss(xml_data); // STYLE_CHECK_ALLOW_STD_STRING_STREAM
Poco::XML::InputSource input_source{ss};
return {new Poco::Util::XMLConfiguration{&input_source}};
}

8
programs/copier/TaskTableAndShard.h
View File

@ -394,12 +394,8 @@ inline ASTPtr TaskTable::rewriteReplicatedCreateQueryToPlain()
inline String DB::TaskShard::getDescription() const
{
std::stringstream ss;
ss << "N" << numberInCluster()
<< " (having a replica " << getHostNameExample()
<< ", pull table " + getQuotedTable(task_table.table_pull)
<< " of cluster " + task_table.cluster_pull_name << ")";
return ss.str();
return fmt::format("N{} (having a replica {}, pull table {} of cluster {}",
numberInCluster(), getHostNameExample(), getQuotedTable(task_table.table_pull), task_table.cluster_pull_name);
}
inline String DB::TaskShard::getHostNameExample() const

5
programs/format/Format.cpp
View File

@ -6,6 +6,7 @@
#include <IO/ReadBufferFromFileDescriptor.h>
#include <IO/ReadHelpers.h>
#include <IO/WriteBufferFromFileDescriptor.h>
#include <IO/WriteBufferFromOStream.h>
#include <Parsers/ParserQuery.h>
#include <Parsers/parseQuery.h>
#include <Parsers/formatAST.h>
@ -129,7 +130,9 @@ int mainEntryClickHouseFormat(int argc, char ** argv)
ASTPtr res = parseQueryAndMovePosition(parser, pos, end, "query", multiple, 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
if (!quiet)
{
formatAST(*res, std::cout, hilite, oneline);
WriteBufferFromOStream res_buf(std::cout, 4096);
formatAST(*res, res_buf, hilite, oneline);
res_buf.next();
if (multiple)
std::cout << "\n;\n";
std::cout << std::endl;

2
programs/git-import/git-import.cpp
View File

@ -680,7 +680,7 @@ void updateSnapshot(Snapshot & snapshot, const Commit & commit, CommitDiff & fil
for (auto & elem : file_changes)
{
auto & file = elem.second.file_change;
if (file.path != file.old_path)
if (!file.old_path.empty() && file.path != file.old_path)
snapshot[file.path] = snapshot[file.old_path];
}

44
programs/install/Install.cpp
View File

@ -329,14 +329,20 @@ int mainEntryClickHouseInstall(int argc, char ** argv)
bool has_password_for_default_user = false;
if (!fs::exists(main_config_file))
if (!fs::exists(config_d))
{
fmt::print("Creating config directory {} that is used for tweaks of main server configuration.\n", config_d.string());
fs::create_directory(config_d);
}
if (!fs::exists(users_d))
{
fmt::print("Creating config directory {} that is used for tweaks of users configuration.\n", users_d.string());
fs::create_directory(users_d);
}
if (!fs::exists(main_config_file))
{
std::string_view main_config_content = getResource("config.xml");
if (main_config_content.empty())
{
@ -349,22 +355,8 @@ int mainEntryClickHouseInstall(int argc, char ** argv)
out.sync();
out.finalize();
}
std::string_view users_config_content = getResource("users.xml");
if (users_config_content.empty())
{
fmt::print("There is no default users.xml, you have to download it and place to {}.\n", users_config_file.string());
}
else
{
WriteBufferFromFile out(users_config_file.string());
out.write(users_config_content.data(), users_config_content.size());
out.sync();
out.finalize();
}
}
else
{
{
fmt::print("Config file {} already exists, will keep it and extract path info from it.\n", main_config_file.string());
@ -384,10 +376,27 @@ int mainEntryClickHouseInstall(int argc, char ** argv)
}
}
/// Check if password for default user already specified.
if (fs::exists(users_config_file))
if (!fs::exists(users_config_file))
{
std::string_view users_config_content = getResource("users.xml");
if (users_config_content.empty())
{
fmt::print("There is no default users.xml, you have to download it and place to {}.\n", users_config_file.string());
}
else
{
WriteBufferFromFile out(users_config_file.string());
out.write(users_config_content.data(), users_config_content.size());
out.sync();
out.finalize();
}
}
else
{
fmt::print("Users config file {} already exists, will keep it and extract users info from it.\n", users_config_file.string());
/// Check if password for default user already specified.
ConfigProcessor processor(users_config_file.string(), /* throw_on_bad_incl = */ false, /* log_to_console = */ false);
ConfigurationPtr configuration(new Poco::Util::XMLConfiguration(processor.processConfig()));
@ -398,7 +407,6 @@ int mainEntryClickHouseInstall(int argc, char ** argv)
has_password_for_default_user = true;
}
}
}
/// Chmod and chown configs
{

2
programs/local/LocalServer.cpp
View File

@ -422,7 +422,7 @@ static const char * minimal_default_user_xml =
static ConfigurationPtr getConfigurationFromXMLString(const char * xml_data)
{
std::stringstream ss{std::string{xml_data}};
std::stringstream ss{std::string{xml_data}}; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
Poco::XML::InputSource input_source{ss};
return {new Poco::Util::XMLConfiguration{&input_source}};
}

6
programs/odbc-bridge/ColumnInfoHandler.cpp
View File

@ -113,16 +113,16 @@ void ODBCColumnsInfoHandler::handleRequest(Poco::Net::HTTPServerRequest & reques
/// TODO Why not do SQLColumns instead?
std::string name = schema_name.empty() ? backQuoteIfNeed(table_name) : backQuoteIfNeed(schema_name) + "." + backQuoteIfNeed(table_name);
std::stringstream ss;
WriteBufferFromOwnString buf;
std::string input = "SELECT * FROM " + name + " WHERE 1 = 0";
ParserQueryWithOutput parser;
ASTPtr select = parseQuery(parser, input.data(), input.data() + input.size(), "", context_settings.max_query_size, context_settings.max_parser_depth);
IAST::FormatSettings settings(ss, true);
IAST::FormatSettings settings(buf, true);
settings.always_quote_identifiers = true;
settings.identifier_quoting_style = getQuotingStyle(hdbc);
select->format(settings);
std::string query = ss.str();
std::string query = buf.str();
LOG_TRACE(log, "Inferring structure with query '{}'", query);

6
programs/odbc-bridge/ODBCBlockOutputStream.cpp
View File

@ -32,12 +32,12 @@ namespace
for (const auto & column : columns)
query.columns->children.emplace_back(std::make_shared<ASTIdentifier>(column.name));
std::stringstream ss;
IAST::FormatSettings settings(ss, true);
WriteBufferFromOwnString buf;
IAST::FormatSettings settings(buf, true);
settings.always_quote_identifiers = true;
settings.identifier_quoting_style = quoting;
query.IAST::format(settings);
return ss.str();
return buf.str();
}
std::string getQuestionMarks(size_t n)

10
programs/server/Server.cpp
View File

@ -191,10 +191,10 @@ int Server::run()
if (config().hasOption("help"))
{
Poco::Util::HelpFormatter help_formatter(Server::options());
std::stringstream header;
header << commandName() << " [OPTION] [-- [ARG]...]\n";
header << "positional arguments can be used to rewrite config.xml properties, for example, --http_port=8010";
help_formatter.setHeader(header.str());
auto header_str = fmt::format("{} [OPTION] [-- [ARG]...]\n"
"positional arguments can be used to rewrite config.xml properties, for example, --http_port=8010",
commandName());
help_formatter.setHeader(header_str);
help_formatter.format(std::cout);
return 0;
}
@ -568,6 +568,8 @@ int Server::main(const std::vector<std::string> & /*args*/)
if (config->has("zookeeper"))
global_context->reloadZooKeeperIfChanged(config);
global_context->reloadAuxiliaryZooKeepersConfigIfChanged(config);
global_context->updateStorageConfiguration(*config);
},
/* already_loaded = */ true);

2
programs/server/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
PROGRAM(clickhouse-server)
PEERDIR(

2
programs/ya.make
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
PROGRAM(clickhouse)
CFLAGS(

12
src/Access/DiskAccessStorage.cpp
View File

@ -197,11 +197,13 @@ namespace
boost::range::push_back(queries, InterpreterShowGrantsQuery::getAttachGrantQueries(entity));
/// Serialize the list of ATTACH queries to a string.
std::stringstream ss;
ss.exceptions(std::ios::failbit);
WriteBufferFromOwnString buf;
for (const ASTPtr & query : queries)
ss << *query << ";\n";
String file_contents = std::move(ss).str();
{
formatAST(*query, buf, false, true);
buf.write(";\n", 2);
}
String file_contents = buf.str();
/// First we save *.tmp file and then we rename if everything's ok.
auto tmp_file_path = std::filesystem::path{file_path}.replace_extension(".tmp");
@ -353,7 +355,7 @@ String DiskAccessStorage::getStorageParamsJSON() const
json.set("path", directory_path);
if (readonly)
json.set("readonly", readonly.load());
std::ostringstream oss;
std::ostringstream oss; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
oss.exceptions(std::ios::failbit);
Poco::JSON::Stringifier::stringify(json, oss);
return oss.str();

2
src/Access/LDAPAccessStorage.cpp
View File

@ -150,7 +150,7 @@ String LDAPAccessStorage::getStorageParamsJSON() const
params_json.set("server", ldap_server);
params_json.set("roles", default_role_names);
std::ostringstream oss;
std::ostringstream oss; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
oss.exceptions(std::ios::failbit);
Poco::JSON::Stringifier::stringify(params_json, oss);

2
src/Access/UsersConfigAccessStorage.cpp
View File

@ -460,7 +460,7 @@ String UsersConfigAccessStorage::getStorageParamsJSON() const
Poco::JSON::Object json;
if (!path.empty())
json.set("path", path);
std::ostringstream oss;
std::ostringstream oss; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
oss.exceptions(std::ios::failbit);
Poco::JSON::Stringifier::stringify(json, oss);
return oss.str();

2
src/Access/ya.make
View File

@ -1,4 +1,6 @@
# This file is generated automatically, do not edit. See 'ya.make.in' and use 'utils/generate-ya-make' to regenerate it.
OWNER(g:clickhouse)
LIBRARY()
PEERDIR(

2
src/Access/ya.make.in
View File

@ -1,3 +1,5 @@
OWNER(g:clickhouse)
LIBRARY()
PEERDIR(

2
src/AggregateFunctions/AggregateFunctionCount.cpp
View File

@ -8,7 +8,7 @@ namespace DB
{
AggregateFunctionPtr AggregateFunctionCount::getOwnNullAdapter(
const AggregateFunctionPtr &, const DataTypes & types, const Array & params) const
const AggregateFunctionPtr &, const DataTypes & types, const Array & params, const AggregateFunctionProperties & /*properties*/) const
{
return std::make_shared<AggregateFunctionCountNotNullUnary>(types[0], params);
}

2
src/AggregateFunctions/AggregateFunctionCount.h
View File

@ -69,7 +69,7 @@ public:
}
AggregateFunctionPtr getOwnNullAdapter(
const AggregateFunctionPtr &, const DataTypes & types, const Array & params) const override;
const AggregateFunctionPtr &, const DataTypes & types, const Array & params, const AggregateFunctionProperties & /*properties*/) const override;
};

39
src/AggregateFunctions/AggregateFunctionFactory.cpp
View File

@ -56,11 +56,7 @@ static DataTypes convertLowCardinalityTypesToNested(const DataTypes & types)
}
AggregateFunctionPtr AggregateFunctionFactory::get(
const String & name,
const DataTypes & argument_types,
const Array & parameters,
AggregateFunctionProperties & out_properties,
int recursion_level) const
const String & name, const DataTypes & argument_types, const Array & parameters, AggregateFunctionProperties & out_properties) const
{
auto type_without_low_cardinality = convertLowCardinalityTypesToNested(argument_types);
@ -81,11 +77,11 @@ AggregateFunctionPtr AggregateFunctionFactory::get(
[](const auto & type) { return type->onlyNull(); });
AggregateFunctionPtr nested_function = getImpl(
name, nested_types, nested_parameters, out_properties, has_null_arguments, recursion_level);
name, nested_types, nested_parameters, out_properties, has_null_arguments);
return combinator->transformAggregateFunction(nested_function, out_properties, type_without_low_cardinality, parameters);
}
auto res = getImpl(name, type_without_low_cardinality, parameters, out_properties, false, recursion_level);
auto res = getImpl(name, type_without_low_cardinality, parameters, out_properties, false);
if (!res)
throw Exception("Logical error: AggregateFunctionFactory returned nullptr", ErrorCodes::LOGICAL_ERROR);
return res;
@ -97,8 +93,7 @@ AggregateFunctionPtr AggregateFunctionFactory::getImpl(
const DataTypes & argument_types,
const Array & parameters,
AggregateFunctionProperties & out_properties,
bool has_null_arguments,
int recursion_level) const
bool has_null_arguments) const
{
String name = getAliasToOrName(name_param);
Value found;
@ -108,13 +103,9 @@ AggregateFunctionPtr AggregateFunctionFactory::getImpl(
{
found = it->second;
}
/// Find by case-insensitive name.
/// Combinators cannot apply for case insensitive (SQL-style) aggregate function names. Only for native names.
else if (recursion_level == 0)
{
if (auto jt = case_insensitive_aggregate_functions.find(Poco::toLower(name)); jt != case_insensitive_aggregate_functions.end())
found = jt->second;
}
if (found.creator)
{
@ -140,7 +131,7 @@ AggregateFunctionPtr AggregateFunctionFactory::getImpl(
DataTypes nested_types = combinator->transformArguments(argument_types);
Array nested_parameters = combinator->transformParameters(parameters);
AggregateFunctionPtr nested_function = get(nested_name, nested_types, nested_parameters, out_properties, recursion_level + 1);
AggregateFunctionPtr nested_function = get(nested_name, nested_types, nested_parameters, out_properties);
return combinator->transformAggregateFunction(nested_function, out_properties, argument_types, parameters);
}
@ -162,7 +153,7 @@ AggregateFunctionPtr AggregateFunctionFactory::tryGet(
}
std::optional<AggregateFunctionProperties> AggregateFunctionFactory::tryGetPropertiesImpl(const String & name_param, int recursion_level) const
std::optional<AggregateFunctionProperties> AggregateFunctionFactory::tryGetPropertiesImpl(const String & name_param) const
{
String name = getAliasToOrName(name_param);
Value found;
@ -172,13 +163,9 @@ std::optional<AggregateFunctionProperties> AggregateFunctionFactory::tryGetPrope
{
found = it->second;
}
/// Find by case-insensitive name.
/// Combinators cannot apply for case insensitive (SQL-style) aggregate function names. Only for native names.
else if (recursion_level == 0)
{
if (auto jt = case_insensitive_aggregate_functions.find(Poco::toLower(name)); jt != case_insensitive_aggregate_functions.end())
found = jt->second;
}
if (found.creator)
return found.properties;
@ -195,7 +182,7 @@ std::optional<AggregateFunctionProperties> AggregateFunctionFactory::tryGetPrope
String nested_name = name.substr(0, name.size() - combinator->getName().size());
/// NOTE: It's reasonable to also allow to transform properties by combinator.
return tryGetPropertiesImpl(nested_name, recursion_level + 1);
return tryGetPropertiesImpl(nested_name);
}
return {};
@ -204,21 +191,21 @@ std::optional<AggregateFunctionProperties> AggregateFunctionFactory::tryGetPrope
std::optional<AggregateFunctionProperties> AggregateFunctionFactory::tryGetProperties(const String & name) const
{
return tryGetPropertiesImpl(name, 0);
return tryGetPropertiesImpl(name);
}
bool AggregateFunctionFactory::isAggregateFunctionName(const String & name, int recursion_level) const
bool AggregateFunctionFactory::isAggregateFunctionName(const String & name) const
{
if (aggregate_functions.count(name) || isAlias(name))
return true;
String name_lowercase = Poco::toLower(name);
if (recursion_level == 0 && (case_insensitive_aggregate_functions.count(name_lowercase) || isAlias(name_lowercase)))
if (case_insensitive_aggregate_functions.count(name_lowercase) || isAlias(name_lowercase))
return true;
if (AggregateFunctionCombinatorPtr combinator = AggregateFunctionCombinatorFactory::instance().tryFindSuffix(name))
return isAggregateFunctionName(name.substr(0, name.size() - combinator->getName().size()), recursion_level + 1);
return isAggregateFunctionName(name.substr(0, name.size() - combinator->getName().size()));
return false;
}

14
src/AggregateFunctions/AggregateFunctionFactory.h
View File

@ -59,12 +59,11 @@ public:
CaseSensitiveness case_sensitiveness = CaseSensitive);
/// Throws an exception if not found.
AggregateFunctionPtr get(
const String & name,
AggregateFunctionPtr
get(const String & name,
const DataTypes & argument_types,
const Array & parameters,
AggregateFunctionProperties & out_properties,
int recursion_level = 0) const;
AggregateFunctionProperties & out_properties) const;
/// Returns nullptr if not found.
AggregateFunctionPtr tryGet(
@ -76,7 +75,7 @@ public:
/// Get properties if the aggregate function exists.
std::optional<AggregateFunctionProperties> tryGetProperties(const String & name) const;
bool isAggregateFunctionName(const String & name, int recursion_level = 0) const;
bool isAggregateFunctionName(const String & name) const;
private:
AggregateFunctionPtr getImpl(
@ -84,10 +83,9 @@ private:
const DataTypes & argument_types,
const Array & parameters,
AggregateFunctionProperties & out_properties,
bool has_null_arguments,
int recursion_level) const;
bool has_null_arguments) const;
std::optional<AggregateFunctionProperties> tryGetPropertiesImpl(const String & name, int recursion_level) const;
std::optional<AggregateFunctionProperties> tryGetPropertiesImpl(const String & name) const;
private:
using AggregateFunctions = std::unordered_map<String, Value>;

27
src/AggregateFunctions/AggregateFunctionGroupArray.h
View File

@ -2,6 +2,9 @@
#include <IO/ReadHelpers.h>
#include <IO/WriteHelpers.h>
#include <IO/ReadBufferFromString.h>
#include <IO/WriteBufferFromString.h>
#include <IO/Operators.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeString.h>
@ -244,10 +247,9 @@ public:
if constexpr (Trait::sampler == Sampler::RNG)
{
DB::writeIntBinary<size_t>(this->data(place).total_values, buf);
std::ostringstream rng_stream;
rng_stream.exceptions(std::ios::failbit);
rng_stream << this->data(place).rng;
DB::writeStringBinary(rng_stream.str(), buf);
WriteBufferFromOwnString rng_buf;
rng_buf << this->data(place).rng;
DB::writeStringBinary(rng_buf.str(), buf);
}
// TODO
@ -275,9 +277,8 @@ public:
DB::readIntBinary<size_t>(this->data(place).total_values, buf);
std::string rng_string;
DB::readStringBinary(rng_string, buf);
std::istringstream rng_stream(rng_string);
rng_stream.exceptions(std::ios::failbit);
rng_stream >> this->data(place).rng;
ReadBufferFromString rng_buf(rng_string);
rng_buf >> this->data(place).rng;
}
// TODO
@ -565,10 +566,9 @@ public:
if constexpr (Trait::sampler == Sampler::RNG)
{
DB::writeIntBinary<size_t>(data(place).total_values, buf);
std::ostringstream rng_stream;
rng_stream.exceptions(std::ios::failbit);
rng_stream << data(place).rng;
DB::writeStringBinary(rng_stream.str(), buf);
WriteBufferFromOwnString rng_buf;
rng_buf << data(place).rng;
DB::writeStringBinary(rng_buf.str(), buf);
}
// TODO
@ -600,9 +600,8 @@ public:
DB::readIntBinary<size_t>(data(place).total_values, buf);
std::string rng_string;
DB::readStringBinary(rng_string, buf);
std::istringstream rng_stream(rng_string);
rng_stream.exceptions(std::ios::failbit);
rng_stream >> data(place).rng;
ReadBufferFromString rng_buf(rng_string);
rng_buf >> data(place).rng;
}
// TODO

160
src/AggregateFunctions/AggregateFunctionIf.cpp
View File

@ -1,6 +1,7 @@
#include <AggregateFunctions/AggregateFunctionIf.h>
#include <AggregateFunctions/AggregateFunctionCombinatorFactory.h>
#include "registerAggregateFunctions.h"
#include "AggregateFunctionNull.h"
namespace DB
@ -8,6 +9,7 @@ namespace DB
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
}
@ -40,6 +42,164 @@ public:
}
};
/** There are two cases: for single argument and variadic.
* Code for single argument is much more efficient.
*/
template <bool result_is_nullable, bool serialize_flag>
class AggregateFunctionIfNullUnary final
: public AggregateFunctionNullBase<result_is_nullable, serialize_flag,
AggregateFunctionIfNullUnary<result_is_nullable, serialize_flag>>
{
private:
size_t num_arguments;
using Base = AggregateFunctionNullBase<result_is_nullable, serialize_flag,
AggregateFunctionIfNullUnary<result_is_nullable, serialize_flag>>;
public:
String getName() const override
{
return Base::getName();
}
AggregateFunctionIfNullUnary(AggregateFunctionPtr nested_function_, const DataTypes & arguments, const Array & params)
: Base(std::move(nested_function_), arguments, params), num_arguments(arguments.size())
{
if (num_arguments == 0)
throw Exception("Aggregate function " + getName() + " require at least one argument",
ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
}
static inline bool singleFilter(const IColumn ** columns, size_t row_num, size_t num_arguments)
{
const IColumn * filter_column = columns[num_arguments - 1];
if (const ColumnNullable * nullable_column = typeid_cast<const ColumnNullable *>(filter_column))
filter_column = nullable_column->getNestedColumnPtr().get();
return assert_cast<const ColumnUInt8 &>(*filter_column).getData()[row_num];
}
void add(AggregateDataPtr place, const IColumn ** columns, size_t row_num, Arena * arena) const override
{
const ColumnNullable * column = assert_cast<const ColumnNullable *>(columns[0]);
const IColumn * nested_column = &column->getNestedColumn();
if (!column->isNullAt(row_num) && singleFilter(columns, row_num, num_arguments))
{
this->setFlag(place);
this->nested_function->add(this->nestedPlace(place), &nested_column, row_num, arena);
}
}
};
template <bool result_is_nullable, bool serialize_flag, bool null_is_skipped>
class AggregateFunctionIfNullVariadic final
: public AggregateFunctionNullBase<result_is_nullable, serialize_flag,
AggregateFunctionIfNullVariadic<result_is_nullable, serialize_flag, null_is_skipped>>
{
public:
String getName() const override
{
return Base::getName();
}
AggregateFunctionIfNullVariadic(AggregateFunctionPtr nested_function_, const DataTypes & arguments, const Array & params)
: Base(std::move(nested_function_), arguments, params), number_of_arguments(arguments.size())
{
if (number_of_arguments == 1)
throw Exception("Logical error: single argument is passed to AggregateFunctionIfNullVariadic", ErrorCodes::LOGICAL_ERROR);
if (number_of_arguments > MAX_ARGS)
throw Exception("Maximum number of arguments for aggregate function with Nullable types is " + toString(size_t(MAX_ARGS)),
ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
for (size_t i = 0; i < number_of_arguments; ++i)
is_nullable[i] = arguments[i]->isNullable();
}
static inline bool singleFilter(const IColumn ** columns, size_t row_num, size_t num_arguments)
{
return assert_cast<const ColumnUInt8 &>(*columns[num_arguments - 1]).getData()[row_num];
}
void add(AggregateDataPtr place, const IColumn ** columns, size_t row_num, Arena * arena) const override
{
/// This container stores the columns we really pass to the nested function.
const IColumn * nested_columns[number_of_arguments];
for (size_t i = 0; i < number_of_arguments; ++i)
{
if (is_nullable[i])
{
const ColumnNullable & nullable_col = assert_cast<const ColumnNullable &>(*columns[i]);
if (null_is_skipped && nullable_col.isNullAt(row_num))
{
/// If at least one column has a null value in the current row,
/// we don't process this row.
return;
}
nested_columns[i] = &nullable_col.getNestedColumn();
}
else
nested_columns[i] = columns[i];
}
if (singleFilter(nested_columns, row_num, number_of_arguments))
{
this->setFlag(place);
this->nested_function->add(this->nestedPlace(place), nested_columns, row_num, arena);
}
}
private:
using Base = AggregateFunctionNullBase<result_is_nullable, serialize_flag,
AggregateFunctionIfNullVariadic<result_is_nullable, serialize_flag, null_is_skipped>>;
enum { MAX_ARGS = 8 };
size_t number_of_arguments = 0;
std::array<char, MAX_ARGS> is_nullable; /// Plain array is better than std::vector due to one indirection less.
};
AggregateFunctionPtr AggregateFunctionIf::getOwnNullAdapter(
const AggregateFunctionPtr & nested_function, const DataTypes & arguments,
const Array & params, const AggregateFunctionProperties & properties) const
{
bool return_type_is_nullable = !properties.returns_default_when_only_null && getReturnType()->canBeInsideNullable();
size_t nullable_size = std::count_if(arguments.begin(), arguments.end(), [](const auto & element) { return element->isNullable(); });
return_type_is_nullable &= nullable_size != 1 || !arguments.back()->isNullable(); /// If only condition is nullable. we should non-nullable type.
bool serialize_flag = return_type_is_nullable || properties.returns_default_when_only_null;
if (arguments.size() <= 2 && arguments.front()->isNullable())
{
if (return_type_is_nullable)
{
return std::make_shared<AggregateFunctionIfNullUnary<true, true>>(nested_func, arguments, params);
}
else
{
if (serialize_flag)
return std::make_shared<AggregateFunctionIfNullUnary<false, true>>(nested_func, arguments, params);
else
return std::make_shared<AggregateFunctionIfNullUnary<false, false>>(nested_func, arguments, params);
}
}
else
{
if (return_type_is_nullable)
{
return std::make_shared<AggregateFunctionIfNullVariadic<true, true, true>>(nested_function, arguments, params);
}
else
{
if (serialize_flag)
return std::make_shared<AggregateFunctionIfNullVariadic<false, true, true>>(nested_function, arguments, params);
else
return std::make_shared<AggregateFunctionIfNullVariadic<false, false, true>>(nested_function, arguments, params);
}
}
}
void registerAggregateFunctionCombinatorIf(AggregateFunctionCombinatorFactory & factory)
{
factory.registerCombinator(std::make_shared<AggregateFunctionCombinatorIf>());

4
src/AggregateFunctions/AggregateFunctionIf.h
View File

@ -109,6 +109,10 @@ public:
{
return nested_func->isState();
}
AggregateFunctionPtr getOwnNullAdapter(
const AggregateFunctionPtr & nested_function, const DataTypes & arguments,
const Array & params, const AggregateFunctionProperties & properties) const override;
};
}

2
src/AggregateFunctions/AggregateFunctionNull.cpp
View File

@ -72,7 +72,7 @@ public:
assert(nested_function);
if (auto adapter = nested_function->getOwnNullAdapter(nested_function, arguments, params))
if (auto adapter = nested_function->getOwnNullAdapter(nested_function, arguments, params, properties))
return adapter;
/// If applied to aggregate function with -State combinator, we apply -Null combinator to it's nested_function instead of itself.

2
src/AggregateFunctions/AggregateFunctionRetention.h
View File

@ -1,7 +1,5 @@
#pragma once
#include <iostream>
#include <sstream>
#include <unordered_set>
#include <Columns/ColumnsNumber.h>
#include <Columns/ColumnArray.h>

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