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### Backward Incompatible Change ### Backward Incompatible Change
* Make the setting `merge_tree_uniform_read_distribution` obsolete. The server still recognizes this setting but it has no effect. [#8308](https://github.com/ClickHouse/ClickHouse/pull/8308) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Make the setting `merge_tree_uniform_read_distribution` obsolete. The server still recognizes this setting but it has no effect. [#8308](https://github.com/ClickHouse/ClickHouse/pull/8308) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Changed return type of the function `greatCircleDistance` to Float32 because now the result of calculation is Float32. [#7993](https://github.com/ClickHouse/ClickHouse/pull/7993) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Changed return type of the function `greatCircleDistance` to `Float32` because now the result of calculation is `Float32`. [#7993](https://github.com/ClickHouse/ClickHouse/pull/7993) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Now it's expected that query parameters are represented in "escaped" format. For example, to pass string `a<tab>b` you have to write `a\tb` or `a\<tab>b` and respectively, `a%5Ctb` or `a%5C%09b` in URL. This is needed to add the possibility to pass NULL as `\N`. This fixes [#7488](https://github.com/ClickHouse/ClickHouse/issues/7488). [#8517](https://github.com/ClickHouse/ClickHouse/pull/8517) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Now it's expected that query parameters are represented in "escaped" format. For example, to pass string `a<tab>b` you have to write `a\tb` or `a\<tab>b` and respectively, `a%5Ctb` or `a%5C%09b` in URL. This is needed to add the possibility to pass NULL as `\N`. This fixes [#7488](https://github.com/ClickHouse/ClickHouse/issues/7488). [#8517](https://github.com/ClickHouse/ClickHouse/pull/8517) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Enable `use_minimalistic_part_header_in_zookeeper` setting for `ReplicatedMergeTree` by default. This will significantly reduce amount of data stored in ZooKeeper. This setting is supported since version 19.1 and we already use it in production in multiple services without any issues for more than half a year. Disable this setting if you have a chance to downgrade to versions older than 19.1. [#6850](https://github.com/ClickHouse/ClickHouse/pull/6850) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Enable `use_minimalistic_part_header_in_zookeeper` setting for `ReplicatedMergeTree` by default. This will significantly reduce amount of data stored in ZooKeeper. This setting is supported since version 19.1 and we already use it in production in multiple services without any issues for more than half a year. Disable this setting if you have a chance to downgrade to versions older than 19.1. [#6850](https://github.com/ClickHouse/ClickHouse/pull/6850) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Data skipping indices are production ready and enabled by default. The settings `allow_experimental_data_skipping_indices`, `allow_experimental_cross_to_join_conversion` and `allow_experimental_multiple_joins_emulation` are now obsolete and do nothing. [#7974](https://github.com/ClickHouse/ClickHouse/pull/7974) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Data skipping indices are production ready and enabled by default. The settings `allow_experimental_data_skipping_indices`, `allow_experimental_cross_to_join_conversion` and `allow_experimental_multiple_joins_emulation` are now obsolete and do nothing. [#7974](https://github.com/ClickHouse/ClickHouse/pull/7974) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Add new ANY JOIN logic for StorageJoin consistent with JOIN operation. Backward incompatible change: to upgrade you need add `SETTINGS any_join_distinct_right_table_keys = 1` to Engine Join tables metadata or remake these tables after upgrade. [#8400](https://github.com/ClickHouse/ClickHouse/pull/8400) ([Artem Zuikov](https://github.com/4ertus2)) * Add new `ANY JOIN` logic for `StorageJoin` consistent with `JOIN` operation. To upgrade without changes in behaviour you need add `SETTINGS any_join_distinct_right_table_keys = 1` to Engine Join tables metadata or recreate these tables after upgrade. [#8400](https://github.com/ClickHouse/ClickHouse/pull/8400) ([Artem Zuikov](https://github.com/4ertus2))
### New Feature ### New Feature
* Added information about paths to `system.merges`. [#8043](https://github.com/ClickHouse/ClickHouse/pull/8043) ([Vladimir Chebotarev](https://github.com/excitoon)) * Added information about part paths to `system.merges`. [#8043](https://github.com/ClickHouse/ClickHouse/pull/8043) ([Vladimir Chebotarev](https://github.com/excitoon))
* Implement ON CLUSTER feature for SYSTEM RELOAD DICTIONARY [#8288](https://github.com/ClickHouse/ClickHouse/pull/8288) ([Guillaume Tassery](https://github.com/YiuRULE)) * Add ability to execute `SYSTEM RELOAD DICTIONARY` query in `ON CLUSTER` mode. [#8288](https://github.com/ClickHouse/ClickHouse/pull/8288) ([Guillaume Tassery](https://github.com/YiuRULE))
* Implement multiple inheritances for user's profiles [#8343](https://github.com/ClickHouse/ClickHouse/pull/8343) ([Mikhail f. Shiryaev](https://github.com/Felixoid)) * Add ability to execute `CREATE DICTIONARY` queries in `ON CLUSTER` mode. [#8163](https://github.com/ClickHouse/ClickHouse/pull/8163) ([alesapin](https://github.com/alesapin))
* Now user's profile in `users.xml` can inherit multiple profiles. [#8343](https://github.com/ClickHouse/ClickHouse/pull/8343) ([Mikhail f. Shiryaev](https://github.com/Felixoid))
* Added `system.stack_trace` table that allows to look at stack traces of all server threads. This is useful for developers to introspect server state. This fixes [#7576](https://github.com/ClickHouse/ClickHouse/issues/7576) [#8344](https://github.com/ClickHouse/ClickHouse/pull/8344) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Added `system.stack_trace` table that allows to look at stack traces of all server threads. This is useful for developers to introspect server state. This fixes [#7576](https://github.com/ClickHouse/ClickHouse/issues/7576) [#8344](https://github.com/ClickHouse/ClickHouse/pull/8344) ([alexey-milovidov](https://github.com/alexey-milovidov))
* DateTime64 datatype with configurable sub-second precision. ... [#7170](https://github.com/ClickHouse/ClickHouse/pull/7170) ([Vasily Nemkov](https://github.com/Enmk)) * Add `DateTime64` datatype with configurable sub-second precision. [#7170](https://github.com/ClickHouse/ClickHouse/pull/7170) ([Vasily Nemkov](https://github.com/Enmk))
* Add ability to execute `CREATE DICTIONARY` queries with `ON CLUSTER`. [#8163](https://github.com/ClickHouse/ClickHouse/pull/8163) ([alesapin](https://github.com/alesapin)) * Add table function `clusterAllReplicas` which allows to query all the nodes in the cluster. [#8493](https://github.com/ClickHouse/ClickHouse/pull/8493) ([kiran sunkari](https://github.com/kiransunkari))
* Clickhouse 7262 [#8493](https://github.com/ClickHouse/ClickHouse/pull/8493) ([kiran sunkari](https://github.com/kiransunkari)) * Add aggregate function `categoricalInformationValue` which calculates the information value of a discrete feature. [#8117](https://github.com/ClickHouse/ClickHouse/pull/8117) ([hcz](https://github.com/hczhcz))
* Add aggregate function `categoricalInformationValue` which calculates the information value of a discrete feature [#8117](https://github.com/ClickHouse/ClickHouse/pull/8117) ([hcz](https://github.com/hczhcz)) * Speed up parsing of data files in `CSV`, `TSV` and `JSONEachRow` format by doing it in parallel. This is enabled by default and controlled by the `max_threads_for_parallel_parsing` setting. [#7780](https://github.com/ClickHouse/ClickHouse/pull/7780) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Speed up parsing of data files in CSV, TSV and JSONEachRow format by doing it in parallel. This is enabled by default and controlled by the `max_threads_for_parallel_parsing` setting. ... [#7780](https://github.com/ClickHouse/ClickHouse/pull/7780) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Add function `bankerRound` which performs banker's rounding. [#8112](https://github.com/ClickHouse/ClickHouse/pull/8112) ([hcz](https://github.com/hczhcz))
* Add function `bankerRound` which performs banker's rounding [#8112](https://github.com/ClickHouse/ClickHouse/pull/8112) ([hcz](https://github.com/hczhcz))
* Support more languages in embedded dictionary for region names: 'ru', 'en', 'ua', 'uk', 'by', 'kz', 'tr', 'de', 'uz', 'lv', 'lt', 'et', 'pt', 'he', 'vi'. [#8189](https://github.com/ClickHouse/ClickHouse/pull/8189) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Support more languages in embedded dictionary for region names: 'ru', 'en', 'ua', 'uk', 'by', 'kz', 'tr', 'de', 'uz', 'lv', 'lt', 'et', 'pt', 'he', 'vi'. [#8189](https://github.com/ClickHouse/ClickHouse/pull/8189) ([alexey-milovidov](https://github.com/alexey-milovidov))
* New consistent ANY JOIN logic: ```t1 ANY LEFT JOIN t2``` equals ```t2 ANY RIGHT JOIN t1```. Adds new SEMI and ANTY JOIN. Old ```ANY INNER JOIN``` logic is allowed as ```SEMI LEFT JOIN```. There's a ragne of versons (19.14 - 19.17) that has no default `ANY INNER JOIN` and `ANY RIGHT JOIN`. Older has old one, newer has new one. ... [#7665](https://github.com/ClickHouse/ClickHouse/pull/7665) ([Artem Zuikov](https://github.com/4ertus2)) * Improvements in consistency of `ANY JOIN` logic. Now `t1 ANY LEFT JOIN t2` equals `t2 ANY RIGHT JOIN t1`. [#7665](https://github.com/ClickHouse/ClickHouse/pull/7665) ([Artem Zuikov](https://github.com/4ertus2))
* Added `Distributed` format for `File` engine and `file` table function which allows to read from `.bin` files generated by `StorageDistributedDirectoryMonitor`. Those files are created while asynchronous insert into `Distributed` table. Examples: `select * from file('/path/to/file.bin', 'Distributed')` or `create table t (dummy UInt32) engine = File('Distributed', '/path/to/file.bin')`. ... [#8535](https://github.com/ClickHouse/ClickHouse/pull/8535) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Add setting `any_join_distinct_right_table_keys` which enables old behaviour for `ANY INNER JOIN`. [#7665](https://github.com/ClickHouse/ClickHouse/pull/7665) ([Artem Zuikov](https://github.com/4ertus2))
* Reset column argument for runningAccumulate [#8326](https://github.com/ClickHouse/ClickHouse/pull/8326) ([Sergey Kononenko](https://github.com/kononencheg)) * Add new `SEMI` and `ANTY JOIN`. Old `ANY INNER JOIN` behaviour now available as `SEMI LEFT JOIN`. [#7665](https://github.com/ClickHouse/ClickHouse/pull/7665) ([Artem Zuikov](https://github.com/4ertus2))
* ALTER <materialized view name> MODIFY QUERY <select_query> [#7533](https://github.com/ClickHouse/ClickHouse/pull/7533) ([nvartolomei](https://github.com/nvartolomei)) * Added `Distributed` format for `File` engine and `file` table function which allows to read from `.bin` files generated by asynchronous inserts into `Distributed` table. [#8535](https://github.com/ClickHouse/ClickHouse/pull/8535) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Prometheus endpoint[#7900](https://github.com/ClickHouse/ClickHouse/pull/7900) ([vdimir](https://github.com/Vdimir)) * Add optional reset column argument for `runningAccumulate` which allows to reset aggregation results for each new key value. [#8326](https://github.com/ClickHouse/ClickHouse/pull/8326) ([Sergey Kononenko](https://github.com/kononencheg))
* User can add in `<remote_url_allow_hosts>` from `config.xml` hosts, which other users can go to. ... [#7154](https://github.com/ClickHouse/ClickHouse/pull/7154) ([Mikhail Korotov](https://github.com/millb)) * Add ability to alter materialized views with `ALTER <materialized view name> MODIFY QUERY <select_query>`. [#7533](https://github.com/ClickHouse/ClickHouse/pull/7533) ([nvartolomei](https://github.com/nvartolomei))
* Added function `greatCircleAngle`; changed Earth radius to be consistent with H3 library. [#8105](https://github.com/ClickHouse/ClickHouse/pull/8105) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Add ability to use ClickHouse as Prometheus endpoint. [#7900](https://github.com/ClickHouse/ClickHouse/pull/7900) ([vdimir](https://github.com/Vdimir))
* Created JSONCompactEachRow and JSONCompactEachRowWithNamesAndTypes formats for input and output. [#7841](https://github.com/ClickHouse/ClickHouse/pull/7841) ([Mikhail Korotov](https://github.com/millb)) * Add section `<remote_url_allow_hosts>` in `config.xml` which restricts allowed hosts for remote table engines and table functions `URL`, `S3`, `HDFS`. [#7154](https://github.com/ClickHouse/ClickHouse/pull/7154) ([Mikhail Korotov](https://github.com/millb))
* Added feature to read and write gzip files based on engine parameters and path (URI) extension. Supported options are ... [#7840](https://github.com/ClickHouse/ClickHouse/pull/7840) ([Andrey Bodrov](https://github.com/apbodrov)) * Added function `greatCircleAngle` which calculates the distance on a sphere in degrees. [#8105](https://github.com/ClickHouse/ClickHouse/pull/8105) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Changed Earth radius to be consistent with H3 library. [#8105](https://github.com/ClickHouse/ClickHouse/pull/8105) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Added `JSONCompactEachRow` and `JSONCompactEachRowWithNamesAndTypes` formats for input and output. [#7841](https://github.com/ClickHouse/ClickHouse/pull/7841) ([Mikhail Korotov](https://github.com/millb))
* Added feature for file-related table engines and table functions (`File`, `S3`, `URL`, `HDFS`) which allows to read and write `gzip` files based on additional engine parameter or file extension. [#7840](https://github.com/ClickHouse/ClickHouse/pull/7840) ([Andrey Bodrov](https://github.com/apbodrov))
* Added the `randomASCII(length)` function, generating a string with a random set of [ASCII](https://en.wikipedia.org/wiki/ASCII#Printable_characters) printable characters. [#8401](https://github.com/ClickHouse/ClickHouse/pull/8401) ([BayoNet](https://github.com/BayoNet)) * Added the `randomASCII(length)` function, generating a string with a random set of [ASCII](https://en.wikipedia.org/wiki/ASCII#Printable_characters) printable characters. [#8401](https://github.com/ClickHouse/ClickHouse/pull/8401) ([BayoNet](https://github.com/BayoNet))
* Added function JSONExtractArrayRaw [#8081](https://github.com/ClickHouse/ClickHouse/pull/8081) ([Oleg Matrokhin](https://github.com/errx)) * Added function `JSONExtractArrayRaw` which returns an array on unparsed json array elements from `JSON` string. [#8081](https://github.com/ClickHouse/ClickHouse/pull/8081) ([Oleg Matrokhin](https://github.com/errx))
* Add arrayZip function for combine multiple array type columns [#8149](https://github.com/ClickHouse/ClickHouse/pull/8149) ([Winter Zhang](https://github.com/zhang2014)) * Add `arrayZip` function which allows to combine multiple arrays of equal lengths into one array of tuples. [#8149](https://github.com/ClickHouse/ClickHouse/pull/8149) ([Winter Zhang](https://github.com/zhang2014))
* Move parts between storage volumes according to configured TTL expressions. [#8140](https://github.com/ClickHouse/ClickHouse/pull/8140) ([Vladimir Chebotarev](https://github.com/excitoon)) * Add ability to move data between disks according to configured `TTL`-expressions for `*MergeTree` table engines family. [#8140](https://github.com/ClickHouse/ClickHouse/pull/8140) ([Vladimir Chebotarev](https://github.com/excitoon))
* new aggregate function avgWeighted [#7898](https://github.com/ClickHouse/ClickHouse/pull/7898) ([Andrey Bodrov](https://github.com/apbodrov)) * Added new aggregate function `avgWeighted` which allows to calculate weighted average. [#7898](https://github.com/ClickHouse/ClickHouse/pull/7898) ([Andrey Bodrov](https://github.com/apbodrov))
* Returning back functionality which was deleted during refactoring [#6553](https://github.com/ClickHouse/ClickHouse/issues/6553) in [#7780](https://github.com/ClickHouse/ClickHouse/issues/7780) ... [#7894](https://github.com/ClickHouse/ClickHouse/pull/7894) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)) * Now parallel parsing is enabled by default for `TSV`, `TSKV`, `CSV` and `JSONEachRow` formats. [#7894](https://github.com/ClickHouse/ClickHouse/pull/7894) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* Support of several `h3` function in addition to `geoToH3`: ... [#8034](https://github.com/ClickHouse/ClickHouse/pull/8034) ([Konstantin Malanchev](https://github.com/hombit)) * Add several geo functions from `H3` library: `h3GetResolution`, `h3EdgeAngle`, `h3EdgeLength`, `h3IsValid` and `h3kRing`. [#8034](https://github.com/ClickHouse/ClickHouse/pull/8034) ([Konstantin Malanchev](https://github.com/hombit))
* Added support for brotli (`br`) compression in file-related storages and table functions. This fixes [#8156](https://github.com/ClickHouse/ClickHouse/issues/8156) ... [#8526](https://github.com/ClickHouse/ClickHouse/pull/8526) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Added support for brotli (`br`) compression in file-related storages and table functions. This fixes [#8156](https://github.com/ClickHouse/ClickHouse/issues/8156). [#8526](https://github.com/ClickHouse/ClickHouse/pull/8526) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Filesystem abstraction layer - supporting changes for running ClickHouse over S3 / HDFS. [#7946](https://github.com/ClickHouse/ClickHouse/pull/7946) ([Alexander Burmak](https://github.com/Alex-Burmak)) * Add `groupBit*` functions for the `SimpleAggregationFunction` type. [#8485](https://github.com/ClickHouse/ClickHouse/pull/8485) ([Guillaume Tassery](https://github.com/YiuRULE))
* Add `groupBit*` functions for the `SimpleAggregationFunction` type [#8485](https://github.com/ClickHouse/ClickHouse/pull/8485) ([Guillaume Tassery](https://github.com/YiuRULE))
### Bug Fix ### Bug Fix
* Fixes [#7868](https://github.com/ClickHouse/ClickHouse/issues/7868) [#8306](https://github.com/ClickHouse/ClickHouse/pull/8306) ([tavplubix](https://github.com/tavplubix)) * Fix rename of tables with `Distributed` engine. Fixes issue [#7868](https://github.com/ClickHouse/ClickHouse/issues/7868). [#8306](https://github.com/ClickHouse/ClickHouse/pull/8306) ([tavplubix](https://github.com/tavplubix))
* Now dictionaries support string as expression and fix for default string values. [#8098](https://github.com/ClickHouse/ClickHouse/pull/8098) ([alesapin](https://github.com/alesapin)) * Now dictionaries support `EXPRESSION` for attributes in arbitrary string in non-ClickHouse SQL dialect. [#8098](https://github.com/ClickHouse/ClickHouse/pull/8098) ([alesapin](https://github.com/alesapin))
* Insert select from mysql(...) table function now should work ... [#8234](https://github.com/ClickHouse/ClickHouse/pull/8234) ([tavplubix](https://github.com/tavplubix)) * Fix broken `INSERT SELECT FROM mysql(...)` query. This fixes [#8070](https://github.com/ClickHouse/ClickHouse/issues/8070) and [#7960](https://github.com/ClickHouse/ClickHouse/issues/7960). [#8234](https://github.com/ClickHouse/ClickHouse/pull/8234) ([tavplubix](https://github.com/tavplubix))
* Fixes [#5653](https://github.com/ClickHouse/ClickHouse/issues/5653) [#8606](https://github.com/ClickHouse/ClickHouse/pull/8606) ([tavplubix](https://github.com/tavplubix)) * Fix error "Mismatch column sizes" when inserting default `Tuple` from `JSONEachRow`. This fixes [#5653](https://github.com/ClickHouse/ClickHouse/issues/5653). [#8606](https://github.com/ClickHouse/ClickHouse/pull/8606) ([tavplubix](https://github.com/tavplubix))
* Now an exception will be thrown in case of using WITH TIES alongside LIMIT BY. And also you can use TOP with LIMIT BY. ... [#7637](https://github.com/ClickHouse/ClickHouse/pull/7637) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)) * Now an exception will be thrown in case of using `WITH TIES` alongside `LIMIT BY`. Also add ability to use `TOP` with `LIMIT BY`. This fixes [#7472](https://github.com/ClickHouse/ClickHouse/issues/7472). [#7637](https://github.com/ClickHouse/ClickHouse/pull/7637) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* This pr reverts https://github.com/ClickHouse/ClickHouse/pull/8028 and tries to interpose all malloc symbols correctly. ... [#8046](https://github.com/ClickHouse/ClickHouse/pull/8046) ([Amos Bird](https://github.com/amosbird)) * Fix unintendent dependency from fresh glibc version in `clickhouse-odbc-bridge` binary. [#8046](https://github.com/ClickHouse/ClickHouse/pull/8046) ([Amos Bird](https://github.com/amosbird))
* Fix bug in check function of *MergeTree engines family. Now it doesn't fail in case when we have equal amount of rows in last granule and last mark (non-final). [#8047](https://github.com/ClickHouse/ClickHouse/pull/8047) ([alesapin](https://github.com/alesapin)) * Fix bug in check function of `*MergeTree` engines family. Now it doesn't fail in case when we have equal amount of rows in last granule and last mark (non-final). [#8047](https://github.com/ClickHouse/ClickHouse/pull/8047) ([alesapin](https://github.com/alesapin))
* Fix enum conversion in native format for backward compatibility. [#7908](https://github.com/ClickHouse/ClickHouse/pull/7908) ([Anton Popov](https://github.com/CurtizJ)) * Fix insert into `Enum*` columns after `ALTER` query, when underlying numeric type is equal to table specified type. This fixes [#7836](https://github.com/ClickHouse/ClickHouse/issues/7836). [#7908](https://github.com/ClickHouse/ClickHouse/pull/7908) ([Anton Popov](https://github.com/CurtizJ))
* Allowed non-constant negative "size" argument for function `substring`. It was not allowed by mistake. This fixes [#4832](https://github.com/ClickHouse/ClickHouse/issues/4832) [#7703](https://github.com/ClickHouse/ClickHouse/pull/7703) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Allowed non-constant negative "size" argument for function `substring`. It was not allowed by mistake. This fixes [#4832](https://github.com/ClickHouse/ClickHouse/issues/4832). [#7703](https://github.com/ClickHouse/ClickHouse/pull/7703) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix bug when wrong number of arguments passed to `(O|J)DBC` table engine. [#7709](https://github.com/ClickHouse/ClickHouse/pull/7709) ([alesapin](https://github.com/alesapin)) * Fix parsing bug when wrong number of arguments passed to `(O|J)DBC` table engine. [#7709](https://github.com/ClickHouse/ClickHouse/pull/7709) ([alesapin](https://github.com/alesapin))
* Using command name of the running clickhouse process when sending logs to syslog. In previous versions, empty string was used instead of command name. [#8460](https://github.com/ClickHouse/ClickHouse/pull/8460) ([Michael Nacharov](https://github.com/mnach)) * Using command name of the running clickhouse process when sending logs to syslog. In previous versions, empty string was used instead of command name. [#8460](https://github.com/ClickHouse/ClickHouse/pull/8460) ([Michael Nacharov](https://github.com/mnach))
* Fix checks if a client host is allowed in case it's the localhost. This PR fixes the solution provided in https://github.com/ClickHouse/ClickHouse/pull/8241. [#8342](https://github.com/ClickHouse/ClickHouse/pull/8342) ([Vitaly Baranov](https://github.com/vitlibar)) * Fix check of allowed hosts for `localhost`. This PR fixes the solution provided in https://github.com/ClickHouse/ClickHouse/pull/8241. [#8342](https://github.com/ClickHouse/ClickHouse/pull/8342) ([Vitaly Baranov](https://github.com/vitlibar))
* if the args type is string , the template should be true [#8341](https://github.com/ClickHouse/ClickHouse/pull/8341) ([dinosaur](https://github.com/769344359)) * Fix rare crash in `argMin` and `argMax` functions for long string arguments, when result is used in `runningAccumulate` function. This fixes [#8325](https://github.com/ClickHouse/ClickHouse/issues/8325) [#8341](https://github.com/ClickHouse/ClickHouse/pull/8341) ([dinosaur](https://github.com/769344359))
* Fix Buffer memory overcommit ... [#8345](https://github.com/ClickHouse/ClickHouse/pull/8345) ([Azat Khuzhin](https://github.com/azat)) * Fix memory overcommit for tables with `Buffer` engine. [#8345](https://github.com/ClickHouse/ClickHouse/pull/8345) ([Azat Khuzhin](https://github.com/azat))
* Fixed potential bug in functions that can take NULL as one of the arguments and return non-NULL. [#8196](https://github.com/ClickHouse/ClickHouse/pull/8196) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed potential bug in functions that can take `NULL` as one of the arguments and return non-NULL. [#8196](https://github.com/ClickHouse/ClickHouse/pull/8196) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fixed metrics in `BackgroundProcessingPool` (they were interfering with metrics of processing pool for moves and could throw exceptions `invalid arguments passed to getMaxSourcePartsSize: pool_used > pool_size` during merges and mutations if there is a storage policy set for a table). [#8194](https://github.com/ClickHouse/ClickHouse/pull/8194) ([Vladimir Chebotarev](https://github.com/excitoon)) * Fixed metrics in `BackgroundProcessingPool` (they were interfering with metrics of processing pool for moves and could throw exceptions `invalid arguments passed to getMaxSourcePartsSize: pool_used > pool_size` during merges and mutations if there is a storage policy set for a table). [#8194](https://github.com/ClickHouse/ClickHouse/pull/8194) ([Vladimir Chebotarev](https://github.com/excitoon))
* Fix function IN inside WHERE statement when row-level table filter is present. Fixes [#6687](https://github.com/ClickHouse/ClickHouse/issues/6687) [#8357](https://github.com/ClickHouse/ClickHouse/pull/8357) ([Ivan](https://github.com/abyss7)) * Fix function `IN` inside `WHERE` statement when row-level table filter is present. Fixes [#6687](https://github.com/ClickHouse/ClickHouse/issues/6687) [#8357](https://github.com/ClickHouse/ClickHouse/pull/8357) ([Ivan](https://github.com/abyss7))
* An exception is thrown if the integral value is not parsed completely. [#7678](https://github.com/ClickHouse/ClickHouse/pull/7678) ([Mikhail Korotov](https://github.com/millb)) * Now an exception is thrown if the integral value is not parsed completely for settings values. [#7678](https://github.com/ClickHouse/ClickHouse/pull/7678) ([Mikhail Korotov](https://github.com/millb))
* case: ```select count(1) from distributed_table``` ... [#8164](https://github.com/ClickHouse/ClickHouse/pull/8164) ([小路](https://github.com/nicelulu)) * Fix exception when aggregate function is used in query to distributed table with more than two local shards. [#8164](https://github.com/ClickHouse/ClickHouse/pull/8164) ([小路](https://github.com/nicelulu))
* I fixed two bugs in the bloom_filter index. ... [#8242](https://github.com/ClickHouse/ClickHouse/pull/8242) ([achimbab](https://github.com/achimbab)) * Now bloom filter can handle zero length arrays and doesn't perform redundant calculations. [#8242](https://github.com/ClickHouse/ClickHouse/pull/8242) ([achimbab](https://github.com/achimbab))
* Fixed checking if a client host is allowed by matching the client host to `host_regexp` specified in `users.xml`. [#8241](https://github.com/ClickHouse/ClickHouse/pull/8241) ([Vitaly Baranov](https://github.com/vitlibar)) * Fixed checking if a client host is allowed by matching the client host to `host_regexp` specified in `users.xml`. [#8241](https://github.com/ClickHouse/ClickHouse/pull/8241) ([Vitaly Baranov](https://github.com/vitlibar))
* Relax ambiguous column check that leads to false positives in multiple JOIN ON section. [#8385](https://github.com/ClickHouse/ClickHouse/pull/8385) ([Artem Zuikov](https://github.com/4ertus2)) * Relax ambiguous column check that leads to false positives in multiple `JOIN ON` section. [#8385](https://github.com/ClickHouse/ClickHouse/pull/8385) ([Artem Zuikov](https://github.com/4ertus2))
* Fixed possible server crash (`std::terminate`) when the server cannot send or write data in JSON or XML format with values of String data type (that require UTF-8 validation) or when compressing result data with Brotli algorithm or in some other rare cases. This fixes [#7603](https://github.com/ClickHouse/ClickHouse/issues/7603) [#8384](https://github.com/ClickHouse/ClickHouse/pull/8384) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed possible server crash (`std::terminate`) when the server cannot send or write data in `JSON` or `XML` format with values of `String` data type (that require `UTF-8` validation) or when compressing result data with Brotli algorithm or in some other rare cases. This fixes [#7603](https://github.com/ClickHouse/ClickHouse/issues/7603) [#8384](https://github.com/ClickHouse/ClickHouse/pull/8384) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix race in `StorageDistributedDirectoryMonitor`. [#8383](https://github.com/ClickHouse/ClickHouse/pull/8383) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix race condition in `StorageDistributedDirectoryMonitor` found by CI. This fixes [#8364](https://github.com/ClickHouse/ClickHouse/issues/8364). [#8383](https://github.com/ClickHouse/ClickHouse/pull/8383) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Do not allow to merge data moving it against storage policy volume order [#8549](https://github.com/ClickHouse/ClickHouse/pull/8549) ([Vladimir Chebotarev](https://github.com/excitoon)) * Now background merges in `*MergeTree` table engines family preserve storage policy volume order more accurately. [#8549](https://github.com/ClickHouse/ClickHouse/pull/8549) ([Vladimir Chebotarev](https://github.com/excitoon))
* Fixed Native format for Kafka, resolves [#6731](https://github.com/ClickHouse/ClickHouse/issues/6731) [#7337](https://github.com/ClickHouse/ClickHouse/issues/7337) [#8003](https://github.com/ClickHouse/ClickHouse/issues/8003) ... [#8016](https://github.com/ClickHouse/ClickHouse/pull/8016) ([filimonov](https://github.com/filimonov)) * Now table engine `Kafka` works properly with `Native` format. This fixes [#6731](https://github.com/ClickHouse/ClickHouse/issues/6731) [#7337](https://github.com/ClickHouse/ClickHouse/issues/7337) [#8003](https://github.com/ClickHouse/ClickHouse/issues/8003). [#8016](https://github.com/ClickHouse/ClickHouse/pull/8016) ([filimonov](https://github.com/filimonov))
* Fixed a bug with making set from subquery in right part of IN section. ... [#7755](https://github.com/ClickHouse/ClickHouse/pull/7755) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)) * Fixed formats with headers (like `CSVWithNames`) which were throwing exception about EOF for table engine `Kafka`. [#8016](https://github.com/ClickHouse/ClickHouse/pull/8016) ([filimonov](https://github.com/filimonov))
* Fixed a bug with making set from subquery in right part of `IN` section. This fixes [#5767](https://github.com/ClickHouse/ClickHouse/issues/5767) and [#2542](https://github.com/ClickHouse/ClickHouse/issues/2542). [#7755](https://github.com/ClickHouse/ClickHouse/pull/7755) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* Fix possible crash while reading from storage `File`. [#7756](https://github.com/ClickHouse/ClickHouse/pull/7756) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix possible crash while reading from storage `File`. [#7756](https://github.com/ClickHouse/ClickHouse/pull/7756) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Parquet list reading fix [#8334](https://github.com/ClickHouse/ClickHouse/pull/8334) ([maxulan](https://github.com/maxulan)) * Fixed reading of the files in `Parquet` format containing columns of type `list`. [#8334](https://github.com/ClickHouse/ClickHouse/pull/8334) ([maxulan](https://github.com/maxulan))
* Fix error `Not found column` for distributed queries with prewhere condition dependent on sampling key if `max_parallel_replicas > 1`. [#7913](https://github.com/ClickHouse/ClickHouse/pull/7913) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix error `Not found column` for distributed queries with `PREWHERE` condition dependent on sampling key if `max_parallel_replicas > 1`. [#7913](https://github.com/ClickHouse/ClickHouse/pull/7913) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fix error `Not found column` if query used `prewhere` dependent on table's alias and the result set was empty because of PK condition. [#7911](https://github.com/ClickHouse/ClickHouse/pull/7911) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix error `Not found column` if query used `PREWHERE` dependent on table's alias and the result set was empty because of primary key condition. [#7911](https://github.com/ClickHouse/ClickHouse/pull/7911) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fixed return type for functions `rand` and `randConstant` in case of nullable argument. Now functions always return `UInt32` and never `Nullable(UInt32)`. [#8204](https://github.com/ClickHouse/ClickHouse/pull/8204) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fixed return type for functions `rand` and `randConstant` in case of `Nullable` argument. Now functions always return `UInt32` and never `Nullable(UInt32)`. [#8204](https://github.com/ClickHouse/ClickHouse/pull/8204) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* disabled predicate optimize for `WITH FILL` expression [#7789](https://github.com/ClickHouse/ClickHouse/pull/7789) ([Winter Zhang](https://github.com/zhang2014)) * Disabled predicate push-down for `WITH FILL` expression. This fixes [#7784](https://github.com/ClickHouse/ClickHouse/issues/7784). [#7789](https://github.com/ClickHouse/ClickHouse/pull/7789) ([Winter Zhang](https://github.com/zhang2014))
* Fixed incorrect count() result for SummingMergeTree while FINAL section is used. [#3280](https://github.com/ClickHouse/ClickHouse/issues/3280) [#7786](https://github.com/ClickHouse/ClickHouse/pull/7786) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)) * Fixed incorrect `count()` result for `SummingMergeTree` when `FINAL` section is used. [#3280](https://github.com/ClickHouse/ClickHouse/issues/3280) [#7786](https://github.com/ClickHouse/ClickHouse/pull/7786) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* Fix possible incorrect result for constant functions from remote servers. It happened for queries with functions like `version()`, `uptime()`, etc. which returns different constant values for different servers. [#7666](https://github.com/ClickHouse/ClickHouse/issues/7666) [#7689](https://github.com/ClickHouse/ClickHouse/pull/7689) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix possible incorrect result for constant functions from remote servers. It happened for queries with functions like `version()`, `uptime()`, etc. which returns different constant values for different servers. [#7666](https://github.com/ClickHouse/ClickHouse/issues/7666) [#7689](https://github.com/ClickHouse/ClickHouse/pull/7689) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fix some predicate optimizer wrong results [#8503](https://github.com/ClickHouse/ClickHouse/pull/8503) ([Winter Zhang](https://github.com/zhang2014)) * Fix complicated bug in push-down predicate optimization which leads to wrong results. This fixes a lot of issues on push-down predicate optimization. [#8503](https://github.com/ClickHouse/ClickHouse/pull/8503) ([Winter Zhang](https://github.com/zhang2014))
* Avoid SIGSEGV on CREATE TABLE .. AS dictionary [#8508](https://github.com/ClickHouse/ClickHouse/pull/8508) ([Azat Khuzhin](https://github.com/azat)) * Fix crash in `CREATE TABLE .. AS dictionary` query. [#8508](https://github.com/ClickHouse/ClickHouse/pull/8508) ([Azat Khuzhin](https://github.com/azat))
* 1. rename "error" to "err" in .g4 file to avoid symbol conflict ... [#8294](https://github.com/ClickHouse/ClickHouse/pull/8294) ([taiyang-li](https://github.com/taiyang-li)) * Several improvements ClickHouse grammar in `.g4` file. [#8294](https://github.com/ClickHouse/ClickHouse/pull/8294) ([taiyang-li](https://github.com/taiyang-li))
* Fix bug that leads to crashes in JOINs with Engine Join tables. This fixes [#7556](https://github.com/ClickHouse/ClickHouse/issues/7556) [#8254](https://github.com/ClickHouse/ClickHouse/issues/8254) [#7915](https://github.com/ClickHouse/ClickHouse/issues/7915) [#8100](https://github.com/ClickHouse/ClickHouse/issues/8100) [#8298](https://github.com/ClickHouse/ClickHouse/pull/8298) ([Artem Zuikov](https://github.com/4ertus2)) * Fix bug that leads to crashes in `JOIN`s with tables with engine `Join`. This fixes [#7556](https://github.com/ClickHouse/ClickHouse/issues/7556) [#8254](https://github.com/ClickHouse/ClickHouse/issues/8254) [#7915](https://github.com/ClickHouse/ClickHouse/issues/7915) [#8100](https://github.com/ClickHouse/ClickHouse/issues/8100). [#8298](https://github.com/ClickHouse/ClickHouse/pull/8298) ([Artem Zuikov](https://github.com/4ertus2))
* Do not reload *all* dictionaries on CREATE DATABASE (This ignores any lifetime, while dictionaries can be quite big). [#7916](https://github.com/ClickHouse/ClickHouse/pull/7916) ([Azat Khuzhin](https://github.com/azat)) * Fix redundant dictionaries reload on `CREATE DATABASE`. [#7916](https://github.com/ClickHouse/ClickHouse/pull/7916) ([Azat Khuzhin](https://github.com/azat))
* Limit maximum number of streams for read from `StorageFile` and `StorageHDFS`. Fixes https://github.com/ClickHouse/ClickHouse/issues/7650. [#7981](https://github.com/ClickHouse/ClickHouse/pull/7981) ([alesapin](https://github.com/alesapin)) * Limit maximum number of streams for read from `StorageFile` and `StorageHDFS`. Fixes https://github.com/ClickHouse/ClickHouse/issues/7650. [#7981](https://github.com/ClickHouse/ClickHouse/pull/7981) ([alesapin](https://github.com/alesapin))
* Fix bug in `ALTER ... MODIFY ... CODEC` query, when user specify both default expression and codec. Fixes [8593](https://github.com/ClickHouse/ClickHouse/issues/8593). [#8614](https://github.com/ClickHouse/ClickHouse/pull/8614) ([alesapin](https://github.com/alesapin)) * Fix bug in `ALTER ... MODIFY ... CODEC` query, when user specify both default expression and codec. Fixes [8593](https://github.com/ClickHouse/ClickHouse/issues/8593). [#8614](https://github.com/ClickHouse/ClickHouse/pull/8614) ([alesapin](https://github.com/alesapin))
* Continuation of [#8522](https://github.com/ClickHouse/ClickHouse/issues/8522). [#8613](https://github.com/ClickHouse/ClickHouse/pull/8613) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix error in background merge of columns with `SimpleAggregateFunction(LowCardinality)` type. [#8613](https://github.com/ClickHouse/ClickHouse/pull/8613) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fix tests with processors. [#8376](https://github.com/ClickHouse/ClickHouse/pull/8376) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fixed type check in function `toDateTime64`. [#8375](https://github.com/ClickHouse/ClickHouse/pull/8375) ([Vasily Nemkov](https://github.com/Enmk))
* Fixed type check in toDateTime64 [#8375](https://github.com/ClickHouse/ClickHouse/pull/8375) ([Vasily Nemkov](https://github.com/Enmk)) * Now server do not crash on `LEFT` or `FULL JOIN` wittable and Join engine and unsupported `join_use_nulls` settings. [#8479](https://github.com/ClickHouse/ClickHouse/pull/8479) ([Artem Zuikov](https://github.com/4ertus2))
* Do not crash on LEFT or FULL JOIN with Join engine and unsupported join_use_nulls settings. [#8479](https://github.com/ClickHouse/ClickHouse/pull/8479) ([Artem Zuikov](https://github.com/4ertus2)) * Now `DROP DICTIONARY IF EXISTS db.dict` query doesn't throw exception if `db` doesn't exist. [#8185](https://github.com/ClickHouse/ClickHouse/pull/8185) ([Vitaly Baranov](https://github.com/vitlibar))
* Fix `DROP DICTIONARY IF EXISTS db.dict`, now it doesn't throw exception if `db` doesn't exist. [#8185](https://github.com/ClickHouse/ClickHouse/pull/8185) ([Vitaly Baranov](https://github.com/vitlibar))
* Fix possible crashes in table functions (`file`, `mysql`, `remote`) caused by usage of reference to removed `IStorage` object. Fix incorrect parsing of columns specified at insertion into table function. [#7762](https://github.com/ClickHouse/ClickHouse/pull/7762) ([tavplubix](https://github.com/tavplubix)) * Fix possible crashes in table functions (`file`, `mysql`, `remote`) caused by usage of reference to removed `IStorage` object. Fix incorrect parsing of columns specified at insertion into table function. [#7762](https://github.com/ClickHouse/ClickHouse/pull/7762) ([tavplubix](https://github.com/tavplubix))
* Ensure network be up before starting clickhouse-server. Fix [#7507](https://github.com/ClickHouse/ClickHouse/issues/7507). [#8570](https://github.com/ClickHouse/ClickHouse/pull/8570) ([Zhichang Yu](https://github.com/yuzhichang)) * Ensure network be up before starting `clickhouse-server`. This fixes [#7507](https://github.com/ClickHouse/ClickHouse/issues/7507). [#8570](https://github.com/ClickHouse/ClickHouse/pull/8570) ([Zhichang Yu](https://github.com/yuzhichang))
* Timeouts were not correctly handled if secure connection is used. Queries may hang indefinitely. This fixes [#8126](https://github.com/ClickHouse/ClickHouse/issues/8126). [#8128](https://github.com/ClickHouse/ClickHouse/pull/8128) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fix timeouts handling for secure connections, so queries doesn't hang indefenitely. This fixes [#8126](https://github.com/ClickHouse/ClickHouse/issues/8126). [#8128](https://github.com/ClickHouse/ClickHouse/pull/8128) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix clickhouse-copier cleaning-tainting contention between concurrent workers [#7816](https://github.com/ClickHouse/ClickHouse/pull/7816) ([Ding Xiang Fei](https://github.com/dingxiangfei2009)) * Fix `clickhouse-copier`'s redundant contention between concurrent workers. [#7816](https://github.com/ClickHouse/ClickHouse/pull/7816) ([Ding Xiang Fei](https://github.com/dingxiangfei2009))
* Fixed the bug that mutations be skipped for some attached parts due to their data_version are larger than the table mutation version. [#7812](https://github.com/ClickHouse/ClickHouse/pull/7812) ([Zhichang Yu](https://github.com/yuzhichang)) * Now mutations doesn't skip attached parts, even if their mutation version were larger than current mutation version. [#7812](https://github.com/ClickHouse/ClickHouse/pull/7812) ([Zhichang Yu](https://github.com/yuzhichang)) [#8250](https://github.com/ClickHouse/ClickHouse/pull/8250) ([alesapin](https://github.com/alesapin))
* Remove mutation number from part_name by default. [#8250](https://github.com/ClickHouse/ClickHouse/pull/8250) ([alesapin](https://github.com/alesapin)) * Ignore redundant copies of `*MergeTree` data parts after move to another disk and server restart. [#7810](https://github.com/ClickHouse/ClickHouse/pull/7810) ([Vladimir Chebotarev](https://github.com/excitoon))
* Ignore redundant copies of parts after move and restart. Progress on [#7660](https://github.com/ClickHouse/ClickHouse/issues/7660). ... [#7810](https://github.com/ClickHouse/ClickHouse/pull/7810) ([Vladimir Chebotarev](https://github.com/excitoon)) * Fix crash in `FULL JOIN` with `LowCardinality` in `JOIN` key. [#8252](https://github.com/ClickHouse/ClickHouse/pull/8252) ([Artem Zuikov](https://github.com/4ertus2))
* Fix crash in FULL JOIN with LowCardinality in JOIN key [#8252](https://github.com/ClickHouse/ClickHouse/pull/8252) ([Artem Zuikov](https://github.com/4ertus2)) * Forbidden to use column name more than once in insert query like `INSERT INTO tbl (x, y, x)`. This fixes [#5465](https://github.com/ClickHouse/ClickHouse/issues/5465), [#7681](https://github.com/ClickHouse/ClickHouse/issues/7681). [#7685](https://github.com/ClickHouse/ClickHouse/pull/7685) ([alesapin](https://github.com/alesapin))
* Omitting frame pointer somehow breaks clang release build. ... [#8151](https://github.com/ClickHouse/ClickHouse/pull/8151) ([Amos Bird](https://github.com/amosbird)) * Added fallback for detection the number of physical CPU cores for unknown CPUs (using the number of logical CPU cores). This fixes [#5239](https://github.com/ClickHouse/ClickHouse/issues/5239). [#7726](https://github.com/ClickHouse/ClickHouse/pull/7726) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix unintendent dependency from `GLIBC@2.16` in `clickhouse-odbc-bridge`. [#8028](https://github.com/ClickHouse/ClickHouse/pull/8028) ([alesapin](https://github.com/alesapin)) * Fix `There's no column` error for materialized and alias columns. [#8210](https://github.com/ClickHouse/ClickHouse/pull/8210) ([Artem Zuikov](https://github.com/4ertus2))
* Forbidden to use column name more than once in insert query like `INSERT INTO tbl (x, y, x)`. ... [#7685](https://github.com/ClickHouse/ClickHouse/pull/7685) ([alesapin](https://github.com/alesapin)) * Fixed sever crash when `EXISTS` query was used without `TABLE` or `DICTIONARY` qualifier. Just like `EXISTS t`. This fixes [#8172](https://github.com/ClickHouse/ClickHouse/issues/8172). This bug was introduced in version 19.17. [#8213](https://github.com/ClickHouse/ClickHouse/pull/8213) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Added fallback for detection the number of physical CPU cores for unknown CPUs (using the number of logical CPU cores). This fixes [#5239](https://github.com/ClickHouse/ClickHouse/issues/5239) [#7726](https://github.com/ClickHouse/ClickHouse/pull/7726) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fix rare bug with error `"Sizes of columns doesn't match"` that might appear when using `SimpleAggregateFunction` column. [#7790](https://github.com/ClickHouse/ClickHouse/pull/7790) ([Boris Granveaud](https://github.com/bgranvea))
* Fix unknown column check added in 19.17 for not ordinary columns. [#8210](https://github.com/ClickHouse/ClickHouse/pull/8210) ([Artem Zuikov](https://github.com/4ertus2)) * Fix bug where user with empty `allow_databases` got access to all databases (and same for `allow_dictionaries`). [#7793](https://github.com/ClickHouse/ClickHouse/pull/7793) ([DeifyTheGod](https://github.com/DeifyTheGod))
* Fixed segfault when `EXISTS` query was used without `TABLE` or `DICTIONARY` qualifier. Just like `EXISTS t`. This fixes [#8172](https://github.com/ClickHouse/ClickHouse/issues/8172). This bug was introduced in version 19.17. [#8213](https://github.com/ClickHouse/ClickHouse/pull/8213) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fix client crash when server already disconnected from client. [#8071](https://github.com/ClickHouse/ClickHouse/pull/8071) ([Azat Khuzhin](https://github.com/azat))
* We have free functions implemented for factories such as https://github.com/yandex/ClickHouse/blob/master/dbms/src/Processors/Formats/Impl/CapnProtoRowInputFormat.cpp#L318 [#8281](https://github.com/ClickHouse/ClickHouse/pull/8281) ([Amos Bird](https://github.com/amosbird)) * Fix `ORDER BY` behaviour in case of sorting by primary key prefix and non primary key suffix. [#7759](https://github.com/ClickHouse/ClickHouse/pull/7759) ([Anton Popov](https://github.com/CurtizJ))
* Fix the case where PODArray.insert works with iterator after invalidation. [#7791](https://github.com/ClickHouse/ClickHouse/pull/7791) ([DimasKovas](https://github.com/DimasKovas)) * Check if qualified column present in the table. This fixes [#6836](https://github.com/ClickHouse/ClickHouse/issues/6836). [#7758](https://github.com/ClickHouse/ClickHouse/pull/7758) ([Artem Zuikov](https://github.com/4ertus2))
* Fix the "Sizes of columns doesn't match" error that might appear when using aggregate function columns. ... [#7790](https://github.com/ClickHouse/ClickHouse/pull/7790) ([Boris Granveaud](https://github.com/bgranvea)) * Fixed behavior with `ALTER MOVE` ran immediately after merge finish moves superpart of specified. Fixes [#8103](https://github.com/ClickHouse/ClickHouse/issues/8103). [#8104](https://github.com/ClickHouse/ClickHouse/pull/8104) ([Vladimir Chebotarev](https://github.com/excitoon))
* Fix bug where user with empty allow_databases got access to all databases (and same for allow_dictionaries). [#7793](https://github.com/ClickHouse/ClickHouse/pull/7793) ([DeifyTheGod](https://github.com/DeifyTheGod)) * Fix possible server crash while using `UNION` with different number of columns. Fixes [#7279](https://github.com/ClickHouse/ClickHouse/issues/7279). [#7929](https://github.com/ClickHouse/ClickHouse/pull/7929) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fix a typo that might have caused excessive memory copying. [#7797](https://github.com/ClickHouse/ClickHouse/pull/7797) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Avoid null dereference after "Unknown packet X from server" [#8071](https://github.com/ClickHouse/ClickHouse/pull/8071) ([Azat Khuzhin](https://github.com/azat))
* Fix `ORDER BY` in case of sorting by primary key prefix and non primary key suffix. [#7759](https://github.com/ClickHouse/ClickHouse/pull/7759) ([Anton Popov](https://github.com/CurtizJ))
* Check if qualified column present in the table. [#7758](https://github.com/ClickHouse/ClickHouse/pull/7758) ([Artem Zuikov](https://github.com/4ertus2))
* FIxed behavior with ALTER MOVE ran immediately after merge finish moves superpart of specified. Fixes [#8103](https://github.com/ClickHouse/ClickHouse/issues/8103) [#8104](https://github.com/ClickHouse/ClickHouse/pull/8104) ([Vladimir Chebotarev](https://github.com/excitoon))
* Fix possible server crash while using `UNION` with different number of columns. Fixes [#7279](https://github.com/ClickHouse/ClickHouse/issues/7279) [#7929](https://github.com/ClickHouse/ClickHouse/pull/7929) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fix size of result substring for function `substr` with negative size. [#8589](https://github.com/ClickHouse/ClickHouse/pull/8589) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix size of result substring for function `substr` with negative size. [#8589](https://github.com/ClickHouse/ClickHouse/pull/8589) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Do not execute part mutation in `MergeTree` if there are not enough free threads in background pool. ... [#8588](https://github.com/ClickHouse/ClickHouse/pull/8588) ([tavplubix](https://github.com/tavplubix)) * Now server does not execute part mutation in `MergeTree` if there are not enough free threads in background pool. [#8588](https://github.com/ClickHouse/ClickHouse/pull/8588) ([tavplubix](https://github.com/tavplubix))
* Fix a minor typo on formatting UNION ALL AST [#7999](https://github.com/ClickHouse/ClickHouse/pull/7999) ([litao91](https://github.com/litao91)) * Fix a minor typo on formatting `UNION ALL` AST. [#7999](https://github.com/ClickHouse/ClickHouse/pull/7999) ([litao91](https://github.com/litao91))
* Fixed incorrect bloom filter results under negative. This fixes [#8317](https://github.com/ClickHouse/ClickHouse/issues/8317). [#8566](https://github.com/ClickHouse/ClickHouse/pull/8566) ([Winter Zhang](https://github.com/zhang2014)) * Fixed incorrect bloom filter results for negative numbers. This fixes [#8317](https://github.com/ClickHouse/ClickHouse/issues/8317). [#8566](https://github.com/ClickHouse/ClickHouse/pull/8566) ([Winter Zhang](https://github.com/zhang2014))
* Fixed potential buffer overflow in decompress. Malicious user can pass fabricated compressed data that will cause read after buffer. This issue was found by Eldar Zaitov from Yandex information security team. [#8404](https://github.com/ClickHouse/ClickHouse/pull/8404) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed potential buffer overflow in decompress. Malicious user can pass fabricated compressed data that will cause read after buffer. This issue was found by Eldar Zaitov from Yandex information security team. [#8404](https://github.com/ClickHouse/ClickHouse/pull/8404) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix incorrect result because of integers overflow in `arrayIntersect`. [#7777](https://github.com/ClickHouse/ClickHouse/pull/7777) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix incorrect result because of integers overflow in `arrayIntersect`. [#7777](https://github.com/ClickHouse/ClickHouse/pull/7777) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* check for active replicas when waiting for commands [#8314](https://github.com/ClickHouse/ClickHouse/pull/8314) ([javi santana](https://github.com/javisantana)) * Now `OPTIMIZE TABLE` query will not wait for offline replicas to perform the operation. [#8314](https://github.com/ClickHouse/ClickHouse/pull/8314) ([javi santana](https://github.com/javisantana))
* Fixed ALTER TTL for replicated tables. [#8318](https://github.com/ClickHouse/ClickHouse/pull/8318) ([Vladimir Chebotarev](https://github.com/excitoon)) * Fixed `ALTER TTL` parser for `Replicated*MergeTree` tables. [#8318](https://github.com/ClickHouse/ClickHouse/pull/8318) ([Vladimir Chebotarev](https://github.com/excitoon))
* Read temporary tables on failure to avoid interpreting that bits as query [#8084](https://github.com/ClickHouse/ClickHouse/pull/8084) ([Azat Khuzhin](https://github.com/azat)) * Fix communication between server and client, so server read temporary tables info after query failure. [#8084](https://github.com/ClickHouse/ClickHouse/pull/8084) ([Azat Khuzhin](https://github.com/azat))
* fix bitmapAnd error when intersecting an aggregated bitmap and a scalar bitmap. [#8082](https://github.com/ClickHouse/ClickHouse/pull/8082) ([Yue Huang](https://github.com/moon03432)) * Fix `bitmapAnd` function error when intersecting an aggregated bitmap and a scalar bitmap. [#8082](https://github.com/ClickHouse/ClickHouse/pull/8082) ([Yue Huang](https://github.com/moon03432))
* Refine the definition of ZXid according to the ZooKeeper Programmer's Guide. ... [#8088](https://github.com/ClickHouse/ClickHouse/pull/8088) ([Ding Xiang Fei](https://github.com/dingxiangfei2009)) * Refine the definition of `ZXid` according to the ZooKeeper Programmer's Guide which fixes bug in `clickhouse-cluster-copier`. [#8088](https://github.com/ClickHouse/ClickHouse/pull/8088) ([Ding Xiang Fei](https://github.com/dingxiangfei2009))
* odbc table function now respects external_table_functions_use_nulls [#7506](https://github.com/ClickHouse/ClickHouse/pull/7506) ([Vasily Nemkov](https://github.com/Enmk)) * `odbc` table function now respects `external_table_functions_use_nulls` setting. [#7506](https://github.com/ClickHouse/ClickHouse/pull/7506) ([Vasily Nemkov](https://github.com/Enmk))
* macOS Clang builds [#8148](https://github.com/ClickHouse/ClickHouse/pull/8148) ([Matt Keranen](https://github.com/kmatt)) * Fixed bug that lead to a rare data race. [#8143](https://github.com/ClickHouse/ClickHouse/pull/8143) ([Alexander Kazakov](https://github.com/Akazz))
* Fixed bug that lead to a data race in DB::BlockStreamProfileInfo::calculateRowsBeforeLimit() [#8143](https://github.com/ClickHouse/ClickHouse/pull/8143) ([Alexander Kazakov](https://github.com/Akazz)) * Now `SYSTEM RELOAD DICTIONARY` reloads a dictionary completely, ignoring `update_field`. This fixes [#7440](https://github.com/ClickHouse/ClickHouse/issues/7440). [#8037](https://github.com/ClickHouse/ClickHouse/pull/8037) ([Vitaly Baranov](https://github.com/vitlibar))
* SYSTEM RELOAD DICTIONARY reloads a dictionary completely [#8037](https://github.com/ClickHouse/ClickHouse/pull/8037) ([Vitaly Baranov](https://github.com/vitlibar))
* Add ability to check if dictionary exists in create query. [#8032](https://github.com/ClickHouse/ClickHouse/pull/8032) ([alesapin](https://github.com/alesapin)) * Add ability to check if dictionary exists in create query. [#8032](https://github.com/ClickHouse/ClickHouse/pull/8032) ([alesapin](https://github.com/alesapin))
* Fixes [#7817](https://github.com/ClickHouse/ClickHouse/issues/7817) [#7870](https://github.com/ClickHouse/ClickHouse/pull/7870) ([tavplubix](https://github.com/tavplubix)) * Fix `Float*` parsing in `Values` format. This fixes [#7817](https://github.com/ClickHouse/ClickHouse/issues/7817). [#7870](https://github.com/ClickHouse/ClickHouse/pull/7870) ([tavplubix](https://github.com/tavplubix))
* Fixed errors with space reservation introduced in [#7558](https://github.com/ClickHouse/ClickHouse/issues/7558) and [#7602](https://github.com/ClickHouse/ClickHouse/issues/7602) [#7873](https://github.com/ClickHouse/ClickHouse/pull/7873) ([Vladimir Chebotarev](https://github.com/excitoon)) * Fix crash when we cannot reserve space in some background operations of `*MergeTree` table engines family. [#7873](https://github.com/ClickHouse/ClickHouse/pull/7873) ([Vladimir Chebotarev](https://github.com/excitoon))
* Fix merge/OPTIMIIZE of SimpleAggregateFunction(LowCardinality) ... [#8522](https://github.com/ClickHouse/ClickHouse/pull/8522) ([Azat Khuzhin](https://github.com/azat)) * Fix crash of merge operation when table contains `SimpleAggregateFunction(LowCardinality)` column. This fixes [#8515](https://github.com/ClickHouse/ClickHouse/issues/8515). [#8522](https://github.com/ClickHouse/ClickHouse/pull/8522) ([Azat Khuzhin](https://github.com/azat))
* Restore support of all ICU locales, add the ability to apply collations for constant expressions and add language name to system.collations table. [#8051](https://github.com/ClickHouse/ClickHouse/pull/8051) ([alesapin](https://github.com/alesapin)) * Restore support of all ICU locales and add the ability to apply collations for constant expressions. Also add language name to `system.collations` table. [#8051](https://github.com/ClickHouse/ClickHouse/pull/8051) ([alesapin](https://github.com/alesapin))
* Restore support of all ICU locales, add the ability to apply collations for constant expressions and add language name to `system.collations` table. [#8050](https://github.com/ClickHouse/ClickHouse/pull/8050) ([alesapin](https://github.com/alesapin))
* Fix bug when external dictionaries with zero minimal lifetime (`LIFETIME(MIN 0 MAX N)`, `LIFETIME(N)`) don't update in background. [#7983](https://github.com/ClickHouse/ClickHouse/pull/7983) ([alesapin](https://github.com/alesapin)) * Fix bug when external dictionaries with zero minimal lifetime (`LIFETIME(MIN 0 MAX N)`, `LIFETIME(N)`) don't update in background. [#7983](https://github.com/ClickHouse/ClickHouse/pull/7983) ([alesapin](https://github.com/alesapin))
* Fix dict with clickhouse source and subquery [#8351](https://github.com/ClickHouse/ClickHouse/pull/8351) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix crash when external dictionary with ClickHouse source has subquery in query. [#8351](https://github.com/ClickHouse/ClickHouse/pull/8351) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Fix incorrect parsing of file extension in URL. This fixes [#8157](https://github.com/ClickHouse/ClickHouse/issues/8157) [#8419](https://github.com/ClickHouse/ClickHouse/pull/8419) ([Andrey Bodrov](https://github.com/apbodrov)) * Fix incorrect parsing of file extension in table with engine `URL`. This fixes [#8157](https://github.com/ClickHouse/ClickHouse/issues/8157). [#8419](https://github.com/ClickHouse/ClickHouse/pull/8419) ([Andrey Bodrov](https://github.com/apbodrov))
* Fix `CHECK TABLE` query for `*MergeTree` tables without key. Fixes [#7543](https://github.com/ClickHouse/ClickHouse/issues/7543). [#7979](https://github.com/ClickHouse/ClickHouse/pull/7979) ([alesapin](https://github.com/alesapin)) * Fix `CHECK TABLE` query for `*MergeTree` tables without key. Fixes [#7543](https://github.com/ClickHouse/ClickHouse/issues/7543). [#7979](https://github.com/ClickHouse/ClickHouse/pull/7979) ([alesapin](https://github.com/alesapin))
* Fixed conversion of Float64 to MySQL type, and added test for all supported types. [#8079](https://github.com/ClickHouse/ClickHouse/pull/8079) ([Yuriy Baranov](https://github.com/yurriy)) * Fixed conversion of `Float64` to MySQL type. [#8079](https://github.com/ClickHouse/ClickHouse/pull/8079) ([Yuriy Baranov](https://github.com/yurriy))
* If table was not completely dropped because of server crash, try to restore and load it [#8176](https://github.com/ClickHouse/ClickHouse/pull/8176) ([tavplubix](https://github.com/tavplubix)) * Now if table was not completely dropped because of server crash, server will try to restore and load it. [#8176](https://github.com/ClickHouse/ClickHouse/pull/8176) ([tavplubix](https://github.com/tavplubix))
* Fixed segfault in table function file while inserting into file that doesn't exist. Now in this case file would be created and then insert would be processed. [#8177](https://github.com/ClickHouse/ClickHouse/pull/8177) ([Olga Khvostikova](https://github.com/stavrolia)) * Fixed crash in table function `file` while inserting into file that doesn't exist. Now in this case file would be created and then insert would be processed. [#8177](https://github.com/ClickHouse/ClickHouse/pull/8177) ([Olga Khvostikova](https://github.com/stavrolia))
* Fix rare deadlock which can happen when trace_log is in enabled. [#7838](https://github.com/ClickHouse/ClickHouse/pull/7838) ([filimonov](https://github.com/filimonov)) * Fix rare deadlock which can happen when `trace_log` is in enabled. [#7838](https://github.com/ClickHouse/ClickHouse/pull/7838) ([filimonov](https://github.com/filimonov))
* Add ability to work with different types besides Date in RangeHashed external dictionary created from DDL query. Fixes https://github.com/ClickHouse/ClickHouse/issues/7899. [#8275](https://github.com/ClickHouse/ClickHouse/pull/8275) ([alesapin](https://github.com/alesapin)) * Add ability to work with different types besides `Date` in `RangeHashed` external dictionary created from DDL query. Fixes [7899](https://github.com/ClickHouse/ClickHouse/issues/7899). [#8275](https://github.com/ClickHouse/ClickHouse/pull/8275) ([alesapin](https://github.com/alesapin))
* Fixes crash when now64() is called with result of another function. ... [#8270](https://github.com/ClickHouse/ClickHouse/pull/8270) ([Vasily Nemkov](https://github.com/Enmk)) * Fixes crash when `now64()` is called with result of another function. [#8270](https://github.com/ClickHouse/ClickHouse/pull/8270) ([Vasily Nemkov](https://github.com/Enmk))
* Fixed bug with detecting client ip when connection to mysql wire protocol ... [#7743](https://github.com/ClickHouse/ClickHouse/pull/7743) ([Dmitry Muzyka](https://github.com/dmitriy-myz)) * Fixed bug with detecting client IP for connections through mysql wire protocol. [#7743](https://github.com/ClickHouse/ClickHouse/pull/7743) ([Dmitry Muzyka](https://github.com/dmitriy-myz))
* Fix [#7708](https://github.com/ClickHouse/ClickHouse/issues/7708) empty array handling in `arraySplit` [#7747](https://github.com/ClickHouse/ClickHouse/pull/7747) ([hcz](https://github.com/hczhcz)) * Fix empty array handling in `arraySplit` function. This fixes [#7708](https://github.com/ClickHouse/ClickHouse/issues/7708). [#7747](https://github.com/ClickHouse/ClickHouse/pull/7747) ([hcz](https://github.com/hczhcz))
* Fixed the issue when pid file of another running clickhouse-server may be deleted. [#8487](https://github.com/ClickHouse/ClickHouse/pull/8487) ([Weiqing Xu](https://github.com/weiqxu)) * Fixed the issue when `pid-file` of another running `clickhouse-server` may be deleted. [#8487](https://github.com/ClickHouse/ClickHouse/pull/8487) ([Weiqing Xu](https://github.com/weiqxu))
* Fix dictionary reload if it has `invalidate_query`, which stopped updates and some exception on previous update tries. [#8029](https://github.com/ClickHouse/ClickHouse/pull/8029) ([alesapin](https://github.com/alesapin))
* Fixed error in function `arrayReduce` that may lead to "double free" and error in aggregate function combinator `Resample` that may lead to memory leak. Added aggregate function `aggThrow`. This function can be used for testing purposes. [#8446](https://github.com/ClickHouse/ClickHouse/pull/8446) ([alexey-milovidov](https://github.com/alexey-milovidov))
### Improvement ### Improvement
* Forward all aws sdk log messages into CH log system to help debug scenarios with s3 [#8251](https://github.com/ClickHouse/ClickHouse/pull/8251) ([Grigory Pervakov](https://github.com/GrigoryPervakov)) * Improved logging when working with `S3` table engine. [#8251](https://github.com/ClickHouse/ClickHouse/pull/8251) ([Grigory Pervakov](https://github.com/GrigoryPervakov))
* Printed help message when no arguments are passed when calling `clickhouse-local`. This fixes [#5335](https://github.com/ClickHouse/ClickHouse/issues/5335). [#8230](https://github.com/ClickHouse/ClickHouse/pull/8230) ([Andrey Nagorny](https://github.com/Melancholic)) * Printed help message when no arguments are passed when calling `clickhouse-local`. This fixes [#5335](https://github.com/ClickHouse/ClickHouse/issues/5335). [#8230](https://github.com/ClickHouse/ClickHouse/pull/8230) ([Andrey Nagorny](https://github.com/Melancholic))
* Add setting `mutations_sync` which allows you to wait `ALTER UPDATE/DELETE` queries synchronously. [#8237](https://github.com/ClickHouse/ClickHouse/pull/8237) ([alesapin](https://github.com/alesapin)) * Add setting `mutations_sync` which allows to wait `ALTER UPDATE/DELETE` queries synchronously. [#8237](https://github.com/ClickHouse/ClickHouse/pull/8237) ([alesapin](https://github.com/alesapin))
* Allow relative `user_files_path` (in the way similar to `format_schema_path`) [#7632](https://github.com/ClickHouse/ClickHouse/pull/7632) ([hcz](https://github.com/hczhcz)) * Allow to set up relative `user_files_path` in `config.xml` (in the way similar to `format_schema_path`). [#7632](https://github.com/ClickHouse/ClickHouse/pull/7632) ([hcz](https://github.com/hczhcz))
* Add exception for illegal types for conversion functions with -OrZero postfix [#7880](https://github.com/ClickHouse/ClickHouse/pull/7880) ([Andrey Konyaev](https://github.com/akonyaev90)) * Add exception for illegal types for conversion functions with `-OrZero` postfix. [#7880](https://github.com/ClickHouse/ClickHouse/pull/7880) ([Andrey Konyaev](https://github.com/akonyaev90))
* Simplify format of the header of data sending to a shard in a distributed query. [#8044](https://github.com/ClickHouse/ClickHouse/pull/8044) ([Vitaly Baranov](https://github.com/vitlibar)) * Simplify format of the header of data sending to a shard in a distributed query. [#8044](https://github.com/ClickHouse/ClickHouse/pull/8044) ([Vitaly Baranov](https://github.com/vitlibar))
* Updates to the Live View storage engine. Refactoring of getNewBlocks() and writeIntoLiveView() methods. [#8519](https://github.com/ClickHouse/ClickHouse/pull/8519) ([vzakaznikov](https://github.com/vzakaznikov)) * `Live View` table engine refactoring. [#8519](https://github.com/ClickHouse/ClickHouse/pull/8519) ([vzakaznikov](https://github.com/vzakaznikov))
* Add additional checks for external dictionaries created from DDL-queries. Now it's not possible to create dictionaries with `Executable` source with DDL. Files for dictionaries from `File` source have to be located in `user_files` directory. Remote hosts for HTTP dictionaries now checked with `remote_url_allow_hosts` section from config. Shared libraries for corresponding dictionaries' sources have to be placed in `dictionaries_lib` folder. ... [#8127](https://github.com/ClickHouse/ClickHouse/pull/8127) ([alesapin](https://github.com/alesapin)) * Add additional checks for external dictionaries created from DDL-queries. [#8127](https://github.com/ClickHouse/ClickHouse/pull/8127) ([alesapin](https://github.com/alesapin))
* Fix error `Column ... already exists` while using `FINAL` and `SAMPLE` together, e.g. `select count() from table final sample 1/2`. Fixes [#5186](https://github.com/ClickHouse/ClickHouse/issues/5186) [#7907](https://github.com/ClickHouse/ClickHouse/pull/7907) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix error `Column ... already exists` while using `FINAL` and `SAMPLE` together, e.g. `select count() from table final sample 1/2`. Fixes [#5186](https://github.com/ClickHouse/ClickHouse/issues/5186). [#7907](https://github.com/ClickHouse/ClickHouse/pull/7907) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* mutations might use joinGet without specifying default db. However if the argument isn't treated as special, it won't get currentdb appended thus breaks the background mutation job. Before this pr, we have to specify the database name explicitly, now we can use table identifier, https://github.com/ClickHouse/ClickHouse/issues/7699 ... [#7707](https://github.com/ClickHouse/ClickHouse/pull/7707) ([Amos Bird](https://github.com/amosbird)) * Now table the first argument of `joinGet` function can be table indentifier. [#7707](https://github.com/ClickHouse/ClickHouse/pull/7707) ([Amos Bird](https://github.com/amosbird))
* Allow using MV with subqueries above Kafka tables. [#8197](https://github.com/ClickHouse/ClickHouse/pull/8197) ([filimonov](https://github.com/filimonov)) * Allow using `MaterializedView` with subqueries above `Kafka` tables. [#8197](https://github.com/ClickHouse/ClickHouse/pull/8197) ([filimonov](https://github.com/filimonov))
* Added separated pool for background moves. ... [#7670](https://github.com/ClickHouse/ClickHouse/pull/7670) ([Vladimir Chebotarev](https://github.com/excitoon)) * Now background moves between disks run it the seprate thread pool. [#7670](https://github.com/ClickHouse/ClickHouse/pull/7670) ([Vladimir Chebotarev](https://github.com/excitoon))
* Synchronous system reload dictionary [#8240](https://github.com/ClickHouse/ClickHouse/pull/8240) ([Vitaly Baranov](https://github.com/vitlibar)) * `SYSTEM RELOAD DICTIONARY` now executes synchronously. [#8240](https://github.com/ClickHouse/ClickHouse/pull/8240) ([Vitaly Baranov](https://github.com/vitlibar))
* Remove `Context` from formats. [#8388](https://github.com/ClickHouse/ClickHouse/pull/8388) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Stack traces now display physical addresses (offsets in object file) instead of virtual memory addresses (where the object file was loaded). That allows the use of `addr2line` when binary is position independent and ASLR is active. This fixes [#8360](https://github.com/ClickHouse/ClickHouse/issues/8360) [#8387](https://github.com/ClickHouse/ClickHouse/pull/8387) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Stack traces now display physical addresses (offsets in object file) instead of virtual memory addresses (where the object file was loaded). That allows the use of `addr2line` when binary is position independent and ASLR is active. This fixes [#8360](https://github.com/ClickHouse/ClickHouse/issues/8360) [#8387](https://github.com/ClickHouse/ClickHouse/pull/8387) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Support new syntax for row-level security filters: `<table name='table_name'>…</table>`. Fixes [#5779](https://github.com/ClickHouse/ClickHouse/issues/5779) [#8381](https://github.com/ClickHouse/ClickHouse/pull/8381) ([Ivan](https://github.com/abyss7)) * Support new syntax for row-level security filters: `<table name='table_name'>…</table>`. Fixes [#5779](https://github.com/ClickHouse/ClickHouse/issues/5779). [#8381](https://github.com/ClickHouse/ClickHouse/pull/8381) ([Ivan](https://github.com/abyss7))
* thirdparty libraries such as libhdfs calls libgcc `backtrace` directly, which might lead to ABI mismatch issue when libunwind is enabled and running on old systems [#7956](https://github.com/ClickHouse/ClickHouse/pull/7956) ([Amos Bird](https://github.com/amosbird)) * Now `cityHash` function can work with `Decimal` and `UUID` types. Fixes [#5184](https://github.com/ClickHouse/ClickHouse/issues/5184). [#7693](https://github.com/ClickHouse/ClickHouse/pull/7693) ([Mikhail Korotov](https://github.com/millb))
* Created cityHash for decimal and UUID types. ... [#7693](https://github.com/ClickHouse/ClickHouse/pull/7693) ([Mikhail Korotov](https://github.com/millb))
* Removed fixed index granularity (it was 1024) from system logs because it's obsolete after implementation of adaptive granularity. [#7698](https://github.com/ClickHouse/ClickHouse/pull/7698) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Removed fixed index granularity (it was 1024) from system logs because it's obsolete after implementation of adaptive granularity. [#7698](https://github.com/ClickHouse/ClickHouse/pull/7698) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Enabled MySQL compatibility server when ClickHouse is compiled without SSL. [#7852](https://github.com/ClickHouse/ClickHouse/pull/7852) ([Yuriy Baranov](https://github.com/yurriy)) * Enabled MySQL compatibility server when ClickHouse is compiled without SSL. [#7852](https://github.com/ClickHouse/ClickHouse/pull/7852) ([Yuriy Baranov](https://github.com/yurriy))
* Added Comprehension to Improve Performance [#7857](https://github.com/ClickHouse/ClickHouse/pull/7857) ([Metehan Çetinkaya](https://github.com/MeteHanC)) * Now server checksums distributed batches, which gives more verbose errors in case of corrupted data in batch. [#7914](https://github.com/ClickHouse/ClickHouse/pull/7914) ([Azat Khuzhin](https://github.com/azat))
* Avoid interpreting distributed batches with corrupted extras (query, query settings, revision), by checksumming them. [#7914](https://github.com/ClickHouse/ClickHouse/pull/7914) ([Azat Khuzhin](https://github.com/azat)) * Support `DROP DATABASE`, `DETACH TABLE`, `DROP TABLE` and `ATTACH TABLE` for `MySQL` database engine. [#8202](https://github.com/ClickHouse/ClickHouse/pull/8202) ([Winter Zhang](https://github.com/zhang2014))
* Support `DROP DATABASE` & `DETACH TABLE` & `DROP TABLE` & `ATTACH TABLE` for MySQL Database Engine. [#8202](https://github.com/ClickHouse/ClickHouse/pull/8202) ([Winter Zhang](https://github.com/zhang2014)) * Add authentication in S3 table function and table engine. [#7623](https://github.com/ClickHouse/ClickHouse/pull/7623) ([Vladimir Chebotarev](https://github.com/excitoon))
* Authentication in S3 table function and storage [#7623](https://github.com/ClickHouse/ClickHouse/pull/7623) ([Vladimir Chebotarev](https://github.com/excitoon))
* Use SIGRTMIN instead of SIGPROF for user debugging purposes [#7823](https://github.com/ClickHouse/ClickHouse/pull/7823) ([Ivan](https://github.com/abyss7))
* Added check for extra parts of `MergeTree` at different disks, in order to not allow to miss data parts at undefined disks. [#8118](https://github.com/ClickHouse/ClickHouse/pull/8118) ([Vladimir Chebotarev](https://github.com/excitoon)) * Added check for extra parts of `MergeTree` at different disks, in order to not allow to miss data parts at undefined disks. [#8118](https://github.com/ClickHouse/ClickHouse/pull/8118) ([Vladimir Chebotarev](https://github.com/excitoon))
* Enable SSL support for Mac client and server [#8297](https://github.com/ClickHouse/ClickHouse/pull/8297) ([Ivan](https://github.com/abyss7)) * Enable SSL support for Mac client and server. [#8297](https://github.com/ClickHouse/ClickHouse/pull/8297) ([Ivan](https://github.com/abyss7))
* Support adding Clickhouse as MySQL federated server (see https://dev.mysql.com/doc/refman/5.7/en/federated-create-server.html) [#7717](https://github.com/ClickHouse/ClickHouse/pull/7717) ([Maxim Fedotov](https://github.com/MaxFedotov)) * Now ClickHouse can work as MySQL federated server (see https://dev.mysql.com/doc/refman/5.7/en/federated-create-server.html). [#7717](https://github.com/ClickHouse/ClickHouse/pull/7717) ([Maxim Fedotov](https://github.com/MaxFedotov))
* performance optimizations in processors pipeline. [#7988](https://github.com/ClickHouse/ClickHouse/pull/7988) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * `clickhouse-client` now only enable `bracketed-paste` when multiquery is on and multiline is off. This fixes (#7757)[https://github.com/ClickHouse/ClickHouse/issues/7757]. [#7761](https://github.com/ClickHouse/ClickHouse/pull/7761) ([Amos Bird](https://github.com/amosbird))
* clickhouse-client now only enable `bracketed-paste` when multiquery is on and multiline is off. ... [#7761](https://github.com/ClickHouse/ClickHouse/pull/7761) ([Amos Bird](https://github.com/amosbird)) * Support `Array(Decimal)` in `if` function. [#7721](https://github.com/ClickHouse/ClickHouse/pull/7721) ([Artem Zuikov](https://github.com/4ertus2))
* Support array(Decimal) in ```if``` function. [#7721](https://github.com/ClickHouse/ClickHouse/pull/7721) ([Artem Zuikov](https://github.com/4ertus2)) * Support Decimals in `arrayDifference`, `arrayCumSum` and `arrayCumSumNegative` functions. [#7724](https://github.com/ClickHouse/ClickHouse/pull/7724) ([Artem Zuikov](https://github.com/4ertus2))
* Support Decimals in ```arrayDifference() arrayCumSum() arrayCumSumNegative()``` [#7724](https://github.com/ClickHouse/ClickHouse/pull/7724) ([Artem Zuikov](https://github.com/4ertus2)) * Added `lifetime` column to `system.dictionaries` table. [#6820](https://github.com/ClickHouse/ClickHouse/issues/6820) [#7727](https://github.com/ClickHouse/ClickHouse/pull/7727) ([kekekekule](https://github.com/kekekekule))
* Added lifetime to system.dictionaries [#6820](https://github.com/ClickHouse/ClickHouse/issues/6820) [#7727](https://github.com/ClickHouse/ClickHouse/pull/7727) ([kekekekule](https://github.com/kekekekule)) * Improved check for existing parts on different disks for `*MergeTree` table engines. Addresses [#7660](https://github.com/ClickHouse/ClickHouse/issues/7660). [#8440](https://github.com/ClickHouse/ClickHouse/pull/8440) ([Vladimir Chebotarev](https://github.com/excitoon))
* Improved check for existing parts on different disks. Addresses [#7660](https://github.com/ClickHouse/ClickHouse/issues/7660). [#8440](https://github.com/ClickHouse/ClickHouse/pull/8440) ([Vladimir Chebotarev](https://github.com/excitoon)) * Integration with `AWS SDK` for `S3` interactions which allows to use all S3 features out of the box. [#8011](https://github.com/ClickHouse/ClickHouse/pull/8011) ([Pavel Kovalenko](https://github.com/Jokser))
* Integration with AWS SDK for S3 interactions. This is needed to have all S3 features out of the box. Native AWS S3 client can be easily re-used in S3 VFS development in the future. [#8011](https://github.com/ClickHouse/ClickHouse/pull/8011) ([Pavel Kovalenko](https://github.com/Jokser)) * Added support for subqueries in `Live View` tables. [#7792](https://github.com/ClickHouse/ClickHouse/pull/7792) ([vzakaznikov](https://github.com/vzakaznikov))
* Added support for subqueries in Live View tables. ... [#7792](https://github.com/ClickHouse/ClickHouse/pull/7792) ([vzakaznikov](https://github.com/vzakaznikov)) * Check for using `Date` or `DateTime` column from `TTL` expressions was removed. [#7920](https://github.com/ClickHouse/ClickHouse/pull/7920) ([Vladimir Chebotarev](https://github.com/excitoon))
* Check for using `Date` or `DateTime` column from TTL expressions was removed. [#7920](https://github.com/ClickHouse/ClickHouse/pull/7920) ([Vladimir Chebotarev](https://github.com/excitoon)) * Information about disk was added to `system.detached_parts` table. [#7833](https://github.com/ClickHouse/ClickHouse/pull/7833) ([Vladimir Chebotarev](https://github.com/excitoon))
* Disk info was added to `system.detached_parts`. [#7833](https://github.com/ClickHouse/ClickHouse/pull/7833) ([Vladimir Chebotarev](https://github.com/excitoon)) * Now settings `max_(table|partition)_size_to_drop` can be changed without a restart. [#7779](https://github.com/ClickHouse/ClickHouse/pull/7779) ([Grigory Pervakov](https://github.com/GrigoryPervakov))
* Move setMax(Table|Partition)SizeToDrop call into config updater to change these settings without a restart. [#7779](https://github.com/ClickHouse/ClickHouse/pull/7779) ([Grigory Pervakov](https://github.com/GrigoryPervakov))
* Slightly better usability of error messages. Ask user not to remove the lines below `Stack trace:`. [#7897](https://github.com/ClickHouse/ClickHouse/pull/7897) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Slightly better usability of error messages. Ask user not to remove the lines below `Stack trace:`. [#7897](https://github.com/ClickHouse/ClickHouse/pull/7897) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Better reading messages from Kafka in various formats after [#7935](https://github.com/ClickHouse/ClickHouse/issues/7935) [#8035](https://github.com/ClickHouse/ClickHouse/pull/8035) ([Ivan](https://github.com/abyss7)) * Better reading messages from `Kafka` engine in various formats after [#7935](https://github.com/ClickHouse/ClickHouse/issues/7935). [#8035](https://github.com/ClickHouse/ClickHouse/pull/8035) ([Ivan](https://github.com/abyss7))
* Compatibility with MySQL clients which don't support sha2_password auth plugin [#8036](https://github.com/ClickHouse/ClickHouse/pull/8036) ([Yuriy Baranov](https://github.com/yurriy)) * Better compatibility with MySQL clients which don't support `sha2_password` auth plugin. [#8036](https://github.com/ClickHouse/ClickHouse/pull/8036) ([Yuriy Baranov](https://github.com/yurriy))
* Support more column types in MySQL compatibility server [#7975](https://github.com/ClickHouse/ClickHouse/pull/7975) ([Yuriy Baranov](https://github.com/yurriy)) * Support more column types in MySQL compatibility server. [#7975](https://github.com/ClickHouse/ClickHouse/pull/7975) ([Yuriy Baranov](https://github.com/yurriy))
* Implement `ORDER BY` optimization for `Merge`, `Buffer` and `Materilized View` storages with underlying MergeTree tables. [#8130](https://github.com/ClickHouse/ClickHouse/pull/8130) ([Anton Popov](https://github.com/CurtizJ)) * Implement `ORDER BY` optimization for `Merge`, `Buffer` and `Materilized View` storages with underlying `MergeTree` tables. [#8130](https://github.com/ClickHouse/ClickHouse/pull/8130) ([Anton Popov](https://github.com/CurtizJ))
* old kernels (< 3.17) doens't have SYS_getrandom. Always use POSIX implementation to have better compatibility ... [#7940](https://github.com/ClickHouse/ClickHouse/pull/7940) ([Amos Bird](https://github.com/amosbird)) * Now we always use POSIX implementation of `getrandom` to have better compatibility with old kernels (< 3.17). [#7940](https://github.com/ClickHouse/ClickHouse/pull/7940) ([Amos Bird](https://github.com/amosbird))
* Added check for valid destination in a move TTL rule [#8410](https://github.com/ClickHouse/ClickHouse/pull/8410) ([Vladimir Chebotarev](https://github.com/excitoon)) * Better check for valid destination in a move TTL rule. [#8410](https://github.com/ClickHouse/ClickHouse/pull/8410) ([Vladimir Chebotarev](https://github.com/excitoon))
* DirectoryMonitor: mark batch as broken on UNKNOWN_CODEC/CANNOT_DECOMPRESS errors [#7933](https://github.com/ClickHouse/ClickHouse/pull/7933) ([Azat Khuzhin](https://github.com/azat)) * Better checks for broken insert batches for `Distributed` table engine. [#7933](https://github.com/ClickHouse/ClickHouse/pull/7933) ([Azat Khuzhin](https://github.com/azat))
* Add column with array of parts name which mutations must process in future. [#8179](https://github.com/ClickHouse/ClickHouse/pull/8179) ([alesapin](https://github.com/alesapin)) * Add column with array of parts name which mutations must process in future to `system.mutations` table. [#8179](https://github.com/ClickHouse/ClickHouse/pull/8179) ([alesapin](https://github.com/alesapin))
* Continuation of [#8545](https://github.com/ClickHouse/ClickHouse/issues/8545) [#8552](https://github.com/ClickHouse/ClickHouse/pull/8552) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Parallel merge sort optimization for processors. [#8552](https://github.com/ClickHouse/ClickHouse/pull/8552) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Add forgotten rows number check to chunk constructor. [#8005](https://github.com/ClickHouse/ClickHouse/pull/8005) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* The settings `mark_cache_min_lifetime` is now obsolete and does nothing. In previous versions, mark cache can grow in memory larger than `mark_cache_size` to accomodate data within `mark_cache_min_lifetime` seconds. That was leading to confusion and higher memory usage than expected, that is especially bad on memory constrained systems. If you will see performance degradation after installing this release, you should increase the `mark_cache_size`. [#8484](https://github.com/ClickHouse/ClickHouse/pull/8484) ([alexey-milovidov](https://github.com/alexey-milovidov)) * The settings `mark_cache_min_lifetime` is now obsolete and does nothing. In previous versions, mark cache can grow in memory larger than `mark_cache_size` to accomodate data within `mark_cache_min_lifetime` seconds. That was leading to confusion and higher memory usage than expected, that is especially bad on memory constrained systems. If you will see performance degradation after installing this release, you should increase the `mark_cache_size`. [#8484](https://github.com/ClickHouse/ClickHouse/pull/8484) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Preparation to use `tid` everywhere. This is needed for [#7477](https://github.com/ClickHouse/ClickHouse/issues/7477). [#8276](https://github.com/ClickHouse/ClickHouse/pull/8276) ([alexey-milovidov](https://github.com/alexey-milovidov))
### Performance Improvement ### Performance Improvement
* Non-blocking updates of expired keys in cache dictionaries (with with permission to read old ones). [#8303](https://github.com/ClickHouse/ClickHouse/pull/8303) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)) * Performance optimizations in processors pipeline. [#7988](https://github.com/ClickHouse/ClickHouse/pull/7988) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* omit frame pointer globally to spare one more register. Let's see how perf test goes. [#8097](https://github.com/ClickHouse/ClickHouse/pull/8097) ([Amos Bird](https://github.com/amosbird)) * Non-blocking updates of expired keys in cache dictionaries (with permission to read old ones). [#8303](https://github.com/ClickHouse/ClickHouse/pull/8303) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* Speedup and test correctness of current function. Add perf test. ... [#7307](https://github.com/ClickHouse/ClickHouse/pull/7307) ([Olga Khvostikova](https://github.com/stavrolia)) * Compile ClickHouse without `-fno-omit-frame-pointer` globally to spare one more register. [#8097](https://github.com/ClickHouse/ClickHouse/pull/8097) ([Amos Bird](https://github.com/amosbird))
* Performance degradation is not yet in release, do not include in changelog. [#8462](https://github.com/ClickHouse/ClickHouse/pull/8462) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Speedup `greatCircleDistance` function and add performance tests for it. [#7307](https://github.com/ClickHouse/ClickHouse/pull/7307) ([Olga Khvostikova](https://github.com/stavrolia))
* Performance degradation is not yet in release. Do not include in changelog. [#8463](https://github.com/ClickHouse/ClickHouse/pull/8463) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Improved performance of function `roundDown`. [#8465](https://github.com/ClickHouse/ClickHouse/pull/8465) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Improved performance of function `roundDown`. [#8465](https://github.com/ClickHouse/ClickHouse/pull/8465) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Improved performance of max(), min(), argMin(), argMax() for DateTime64 ... [#8199](https://github.com/ClickHouse/ClickHouse/pull/8199) ([Vasily Nemkov](https://github.com/Enmk)) * Improved performance of `max`, `min`, `argMin`, `argMax` for `DateTime64` data type. [#8199](https://github.com/ClickHouse/ClickHouse/pull/8199) ([Vasily Nemkov](https://github.com/Enmk))
* Improved performance of sorting without a limit or with big limit and external sorting. [#8545](https://github.com/ClickHouse/ClickHouse/pull/8545) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Improved performance of sorting without a limit or with big limit and external sorting. [#8545](https://github.com/ClickHouse/ClickHouse/pull/8545) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Improved performance of formatting floating point numbers up to 6 times. [#8542](https://github.com/ClickHouse/ClickHouse/pull/8542) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Improved performance of formatting floating point numbers up to 6 times. [#8542](https://github.com/ClickHouse/ClickHouse/pull/8542) ([alexey-milovidov](https://github.com/alexey-milovidov))
* gcc generates suboptimal instructions when dealing with `select ... group by column % 128` ... [#7750](https://github.com/ClickHouse/ClickHouse/pull/7750) ([Amos Bird](https://github.com/amosbird)) * Improved performance of `modulo` function. [#7750](https://github.com/ClickHouse/ClickHouse/pull/7750) ([Amos Bird](https://github.com/amosbird))
* Optimized ORDER BY and merging with single column key. [#8335](https://github.com/ClickHouse/ClickHouse/pull/8335) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Optimized `ORDER BY` and merging with single column key. [#8335](https://github.com/ClickHouse/ClickHouse/pull/8335) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Better implementation of addBatchArray (one more free register) . ... [#7710](https://github.com/ClickHouse/ClickHouse/pull/7710) ([Amos Bird](https://github.com/amosbird)) * Better implementation for `arrayReduce`, `-Array` and `-State` combinators. [#7710](https://github.com/ClickHouse/ClickHouse/pull/7710) ([Amos Bird](https://github.com/amosbird))
* Now prewhere should be at least as efficient as where. As a result, any viable predicates can be moved into prewhere without fancy heuristic ... [#7769](https://github.com/ClickHouse/ClickHouse/pull/7769) ([Amos Bird](https://github.com/amosbird)) * Now `PREWHERE` should be optimized to be at least as efficient as `WHERE`. [#7769](https://github.com/ClickHouse/ClickHouse/pull/7769) ([Amos Bird](https://github.com/amosbird))
* Improve the way `round` and `roundBankers` handling negative numbers [#8229](https://github.com/ClickHouse/ClickHouse/pull/8229) ([hcz](https://github.com/hczhcz)) * Improve the way `round` and `roundBankers` handling negative numbers. [#8229](https://github.com/ClickHouse/ClickHouse/pull/8229) ([hcz](https://github.com/hczhcz))
* Fixed potential performance issue in "Context::getTable" method. [#8538](https://github.com/ClickHouse/ClickHouse/pull/8538) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Improved decoding performance of `DoubleDelta` and `Gorilla` codecs by roughly 30-40%. This fixes [#7082](https://github.com/ClickHouse/ClickHouse/issues/7082). [#8019](https://github.com/ClickHouse/ClickHouse/pull/8019) ([Vasily Nemkov](https://github.com/Enmk))
* Improved decoding performance of DoubleDelta and Gorilla codecs by (TODO: edit after performance tests are done) roughly 30-40%. ... [#8019](https://github.com/ClickHouse/ClickHouse/pull/8019) ([Vasily Nemkov](https://github.com/Enmk)) * Improved performance of `base64` related functions. [#8444](https://github.com/ClickHouse/ClickHouse/pull/8444) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Improved performance of base64 related functions. [#8444](https://github.com/ClickHouse/ClickHouse/pull/8444) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Added a function `geoDistance`. It is similar to `greatCircleDistance` but uses approximation to WGS-84 ellipsoid model. The performance of both functions are near the same. [#8086](https://github.com/ClickHouse/ClickHouse/pull/8086) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Added a function `geoDistance`. It is similar to `greatCircleDistance` but uses approximation to WGS-84 ellipsoid model. The performance of both functions are near the same. [#8086](https://github.com/ClickHouse/ClickHouse/pull/8086) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Faster mix/max aggregtion functions for Decimals [#8144](https://github.com/ClickHouse/ClickHouse/pull/8144) ([Artem Zuikov](https://github.com/4ertus2)) * Faster `min` and `max` aggregation functions for `Decimal` data type. [#8144](https://github.com/ClickHouse/ClickHouse/pull/8144) ([Artem Zuikov](https://github.com/4ertus2))
* vectorize processing arrayReduce similar to Aggregator addBatch. Might also serve as an infrastructure for https://github.com/ClickHouse/ClickHouse/pull/7550 ... [#7608](https://github.com/ClickHouse/ClickHouse/pull/7608) ([Amos Bird](https://github.com/amosbird)) * Vectorize processing `arrayReduce`. [#7608](https://github.com/ClickHouse/ClickHouse/pull/7608) ([Amos Bird](https://github.com/amosbird))
* If chains are now optimized as multiIf. [#8355](https://github.com/ClickHouse/ClickHouse/pull/8355) ([kamalov-ruslan](https://github.com/kamalov-ruslan)) * `if` chains are now optimized as `multiIf`. [#8355](https://github.com/ClickHouse/ClickHouse/pull/8355) ([kamalov-ruslan](https://github.com/kamalov-ruslan))
* Fix performance regression introduced in 19.15. [#7935](https://github.com/ClickHouse/ClickHouse/pull/7935) ([filimonov](https://github.com/filimonov)) * Fix performance regression of `Kafka` table engine introduced in 19.15. This fixes [#7261](https://github.com/ClickHouse/ClickHouse/issues/7261). [#7935](https://github.com/ClickHouse/ClickHouse/pull/7935) ([filimonov](https://github.com/filimonov))
* Removed "pie" code generation that gcc from Debian packages occasionally brings by default. [#8483](https://github.com/ClickHouse/ClickHouse/pull/8483) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Removed "pie" code generation that `gcc` from Debian packages occasionally brings by default. [#8483](https://github.com/ClickHouse/ClickHouse/pull/8483) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Parallel parsing data formats [#6553](https://github.com/ClickHouse/ClickHouse/pull/6553) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* Enable optimized parser of `Values` with expressions by default (`input_format_values_deduce_templates_of_expressions=1`). [#8231](https://github.com/ClickHouse/ClickHouse/pull/8231) ([tavplubix](https://github.com/tavplubix))
### Build/Testing/Packaging Improvement ### Build/Testing/Packaging Improvement
* Build fixes (arm, minimal) [#8304](https://github.com/ClickHouse/ClickHouse/pull/8304) ([proller](https://github.com/proller)) * Build fixes for `ARM` and in minimal mode. [#8304](https://github.com/ClickHouse/ClickHouse/pull/8304) ([proller](https://github.com/proller))
* Add coverage file flush for clickhouse-server when std::atexit is not called. Also slightly improved logging in stateless tests with coverage. [#8267](https://github.com/ClickHouse/ClickHouse/pull/8267) ([alesapin](https://github.com/alesapin)) * Add coverage file flush for `clickhouse-server` when std::atexit is not called. Also slightly improved logging in stateless tests with coverage. [#8267](https://github.com/ClickHouse/ClickHouse/pull/8267) ([alesapin](https://github.com/alesapin))
* Update LLVM library in contrib. Avoid using LLVM from OS packages. [#8258](https://github.com/ClickHouse/ClickHouse/pull/8258) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Update LLVM library in contrib. Avoid using LLVM from OS packages. [#8258](https://github.com/ClickHouse/ClickHouse/pull/8258) ([alexey-milovidov](https://github.com/alexey-milovidov))
* No changes to previous release. [#8623](https://github.com/ClickHouse/ClickHouse/pull/8623) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Make bundled `curl` build fully quiet. [#8232](https://github.com/ClickHouse/ClickHouse/pull/8232) [#8203](https://github.com/ClickHouse/ClickHouse/pull/8203) ([Pavel Kovalenko](https://github.com/Jokser))
* Attempt to make curl build fully quiet. ... [#8232](https://github.com/ClickHouse/ClickHouse/pull/8232) ([Pavel Kovalenko](https://github.com/Jokser)) * Fix some `MemorySanitizer` warnings. [#8235](https://github.com/ClickHouse/ClickHouse/pull/8235) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Fix some MemorySanitizer warnings. [#8235](https://github.com/ClickHouse/ClickHouse/pull/8235) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Use `add_warning` and `no_warning` macros in `CMakeLists.txt`. [#8604](https://github.com/ClickHouse/ClickHouse/pull/8604) ([Ivan](https://github.com/abyss7))
* Use add_warning() and no_warning() macros in CMakeLists.txt [#8604](https://github.com/ClickHouse/ClickHouse/pull/8604) ([Ivan](https://github.com/abyss7)) * Add support of Minio S3 Compatible object (https://min.io/) for better integration tests. [#7863](https://github.com/ClickHouse/ClickHouse/pull/7863) [#7875](https://github.com/ClickHouse/ClickHouse/pull/7875) ([Pavel Kovalenko](https://github.com/Jokser))
* For better S3 integration testing Minio S3 Compatible object storage is used (https://min.io/). ... [#7863](https://github.com/ClickHouse/ClickHouse/pull/7863) ([Pavel Kovalenko](https://github.com/Jokser)) * Imported `libc` headers to contrib. It allows to make builds more consistent across various systems (only for `x86_64-linux-gnu`). [#5773](https://github.com/ClickHouse/ClickHouse/pull/5773) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Imported libc headers to contrib. It allows to make builds more consistent across various systems (only for `x86_64-linux-gnu`). [#5773](https://github.com/ClickHouse/ClickHouse/pull/5773) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Remove `-fPIC` from some libraries. [#8464](https://github.com/ClickHouse/ClickHouse/pull/8464) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Remove -fPIC from some libraries. [#8464](https://github.com/ClickHouse/ClickHouse/pull/8464) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Clean `CMakeLists.txt` for curl. See https://github.com/ClickHouse/ClickHouse/pull/8011#issuecomment-569478910 [#8459](https://github.com/ClickHouse/ClickHouse/pull/8459) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Clean CMakeLists for curl a little. See https://github.com/ClickHouse/ClickHouse/pull/8011#issuecomment-569478910 [#8459](https://github.com/ClickHouse/ClickHouse/pull/8459) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Silent warnings in `CapNProto` library. [#8220](https://github.com/ClickHouse/ClickHouse/pull/8220) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Silent warnings in CapNProto library. [#8220](https://github.com/ClickHouse/ClickHouse/pull/8220) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Add performance tests for short string optimized hash tables. [#7679](https://github.com/ClickHouse/ClickHouse/pull/7679) ([Amos Bird](https://github.com/amosbird))
* to perf test https://github.com/ClickHouse/ClickHouse/pull/7662 [#7679](https://github.com/ClickHouse/ClickHouse/pull/7679) ([Amos Bird](https://github.com/amosbird)) * Now ClickHouse will build on `AArch64` even if `MADV_FREE` is not available. This fixes [#8027](https://github.com/ClickHouse/ClickHouse/issues/8027). [#8243](https://github.com/ClickHouse/ClickHouse/pull/8243) ([Amos Bird](https://github.com/amosbird))
* ClickHouse will build on AArch64 even if MADV_FREE is not available. This fixes [#8027](https://github.com/ClickHouse/ClickHouse/issues/8027) [#8243](https://github.com/ClickHouse/ClickHouse/pull/8243) ([Amos Bird](https://github.com/amosbird)) * Update `zlib-ng` to fix memory sanitizer problems. [#7182](https://github.com/ClickHouse/ClickHouse/pull/7182) [#8206](https://github.com/ClickHouse/ClickHouse/pull/8206) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Update zlib-ng to fix memory sanitizer problems. [#7182](https://github.com/ClickHouse/ClickHouse/pull/7182) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Enable internal MySQL library on non-Linux system, because usage of OS packages is very fragile and usually doesn't work at all. This fixes [#5765](https://github.com/ClickHouse/ClickHouse/issues/5765). [#8426](https://github.com/ClickHouse/ClickHouse/pull/8426) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Enable internal MySQL library on non-Linux system, because usage of OS packages is very fragile and usually doesn't work at all. This fixes [#5765](https://github.com/ClickHouse/ClickHouse/issues/5765) [#8426](https://github.com/ClickHouse/ClickHouse/pull/8426) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed build on some systems after enabling `libc++`. This supersedes [#8374](https://github.com/ClickHouse/ClickHouse/issues/8374). [#8380](https://github.com/ClickHouse/ClickHouse/pull/8380) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fixed build on some systems after enabling `libc++`. This supersedes [#8374](https://github.com/ClickHouse/ClickHouse/issues/8374) [#8380](https://github.com/ClickHouse/ClickHouse/pull/8380) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Make `Field` methods more type-safe to find more errors. [#7386](https://github.com/ClickHouse/ClickHouse/pull/7386) [#8209](https://github.com/ClickHouse/ClickHouse/pull/8209) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Make Field methods more type-safe to find more errors. [#7386](https://github.com/ClickHouse/ClickHouse/pull/7386) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Added missing files to the `libc-headers` submodule. [#8507](https://github.com/ClickHouse/ClickHouse/pull/8507) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Added missing files to the `libc-headers` submodule. [#8507](https://github.com/ClickHouse/ClickHouse/pull/8507) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix wrong JSON quoting in performance test output. [#8497](https://github.com/ClickHouse/ClickHouse/pull/8497) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix wrong `JSON` quoting in performance test output. [#8497](https://github.com/ClickHouse/ClickHouse/pull/8497) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Make Field methods more type-safe to find more errors. [#8209](https://github.com/ClickHouse/ClickHouse/pull/8209) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Update zlib-ng to fix memory sanitizer problems. [#8206](https://github.com/ClickHouse/ClickHouse/pull/8206) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Disable "Performing test" messages during curl build process. ... [#8203](https://github.com/ClickHouse/ClickHouse/pull/8203) ([Pavel Kovalenko](https://github.com/Jokser))
* Now stack trace is displayed for `std::exception` and `Poco::Exception`. In previous versions it was available only for `DB::Exception`. This improves diagnostics. [#8501](https://github.com/ClickHouse/ClickHouse/pull/8501) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Now stack trace is displayed for `std::exception` and `Poco::Exception`. In previous versions it was available only for `DB::Exception`. This improves diagnostics. [#8501](https://github.com/ClickHouse/ClickHouse/pull/8501) ([alexey-milovidov](https://github.com/alexey-milovidov))
* drop tables after tests are finished. [#8502](https://github.com/ClickHouse/ClickHouse/pull/8502) ([Amos Bird](https://github.com/amosbird)) * Porting `clock_gettime` and `clock_nanosleep` for fresh glibc versions. [#8054](https://github.com/ClickHouse/ClickHouse/pull/8054) ([Amos Bird](https://github.com/amosbird))
* glibc2.30 removes the faulty ifunc compat redirects of clock_gettime and clock_nanosleep. Linking to librt won't help anymore. [#8054](https://github.com/ClickHouse/ClickHouse/pull/8054) ([Amos Bird](https://github.com/amosbird))
* Enable `part_log` in example config for developers. [#8609](https://github.com/ClickHouse/ClickHouse/pull/8609) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Enable `part_log` in example config for developers. [#8609](https://github.com/ClickHouse/ClickHouse/pull/8609) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix async nature of reload in 01036_no_superfluous_dict_reload_on_create_database* [#8111](https://github.com/ClickHouse/ClickHouse/pull/8111) ([Azat Khuzhin](https://github.com/azat)) * Fix async nature of reload in `01036_no_superfluous_dict_reload_on_create_database*`. [#8111](https://github.com/ClickHouse/ClickHouse/pull/8111) ([Azat Khuzhin](https://github.com/azat))
* Fixed codec performance tests ... [#8615](https://github.com/ClickHouse/ClickHouse/pull/8615) ([Vasily Nemkov](https://github.com/Enmk)) * Fixed codec performance tests. [#8615](https://github.com/ClickHouse/ClickHouse/pull/8615) ([Vasily Nemkov](https://github.com/Enmk))
* Documentation for `.tgz` build and ability to work from any directory. [#8612](https://github.com/ClickHouse/ClickHouse/pull/8612) ([alesapin](https://github.com/alesapin)) * Add install scripts for `.tgz` build and documentation for them. [#8612](https://github.com/ClickHouse/ClickHouse/pull/8612) [#8591](https://github.com/ClickHouse/ClickHouse/pull/8591) ([alesapin](https://github.com/alesapin))
* Removed old ZSTD test (it was created in year 2016 to reproduce the bug that pre 1.0 version of ZSTD has had). This fixes [#8618](https://github.com/ClickHouse/ClickHouse/issues/8618) [#8619](https://github.com/ClickHouse/ClickHouse/pull/8619) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Removed old `ZSTD` test (it was created in year 2016 to reproduce the bug that pre 1.0 version of ZSTD has had). This fixes [#8618](https://github.com/ClickHouse/ClickHouse/issues/8618). [#8619](https://github.com/ClickHouse/ClickHouse/pull/8619) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fixed build on Mac OS Catalina. [#8600](https://github.com/ClickHouse/ClickHouse/pull/8600) ([meo](https://github.com/meob)) * Fixed build on Mac OS Catalina. [#8600](https://github.com/ClickHouse/ClickHouse/pull/8600) ([meo](https://github.com/meob))
* Increased number of rows in codec performance tests to make results noticeable ... [#8574](https://github.com/ClickHouse/ClickHouse/pull/8574) ([Vasily Nemkov](https://github.com/Enmk)) * Increased number of rows in codec performance tests to make results noticeable. [#8574](https://github.com/ClickHouse/ClickHouse/pull/8574) ([Vasily Nemkov](https://github.com/Enmk))
* In debug builds, treat LOGICAL_ERROR exceptions as assertion failures, so that they are easier to notice. [#8475](https://github.com/ClickHouse/ClickHouse/pull/8475) ([Alexander Kuzmenkov](https://github.com/akuzm)) * In debug builds, treat `LOGICAL_ERROR` exceptions as assertion failures, so that they are easier to notice. [#8475](https://github.com/ClickHouse/ClickHouse/pull/8475) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Make formats-related perf test more deterministic. [#8477](https://github.com/ClickHouse/ClickHouse/pull/8477) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Make formats-related performance test more deterministic. [#8477](https://github.com/ClickHouse/ClickHouse/pull/8477) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Update lz4 to fix a MemorySanitizer failure. [#8181](https://github.com/ClickHouse/ClickHouse/pull/8181) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Update `lz4` to fix a MemorySanitizer failure. [#8181](https://github.com/ClickHouse/ClickHouse/pull/8181) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Suppress a known MemorySanitizer false positive in exception handling. [#8182](https://github.com/ClickHouse/ClickHouse/pull/8182) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Suppress a known MemorySanitizer false positive in exception handling. [#8182](https://github.com/ClickHouse/ClickHouse/pull/8182) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Update `gcc` and `g++` to version 9 in `build/docker/build.sh` [#7766](https://github.com/ClickHouse/ClickHouse/pull/7766) ([TLightSky](https://github.com/tlightsky)) * Update `gcc` and `g++` to version 9 in `build/docker/build.sh` [#7766](https://github.com/ClickHouse/ClickHouse/pull/7766) ([TLightSky](https://github.com/tlightsky))
* Add install scripts for .tgz packages. [#8591](https://github.com/ClickHouse/ClickHouse/pull/8591) ([alesapin](https://github.com/alesapin)) * Add performance test case to test that `PREWHERE` is worse than `WHERE`. [#7768](https://github.com/ClickHouse/ClickHouse/pull/7768) ([Amos Bird](https://github.com/amosbird))
* example perf test case which prewhere is worse than where. ... [#7768](https://github.com/ClickHouse/ClickHouse/pull/7768) ([Amos Bird](https://github.com/amosbird))
* Progress towards fixing one flacky test. [#8621](https://github.com/ClickHouse/ClickHouse/pull/8621) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Progress towards fixing one flacky test. [#8621](https://github.com/ClickHouse/ClickHouse/pull/8621) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Avoid MSan report for data from libunwind. [#8539](https://github.com/ClickHouse/ClickHouse/pull/8539) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Avoid MemorySanitizer report for data from `libunwind`. [#8539](https://github.com/ClickHouse/ClickHouse/pull/8539) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Do not include in changelog. [#7706](https://github.com/ClickHouse/ClickHouse/issues/7706) [#7722](https://github.com/ClickHouse/ClickHouse/pull/7722) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Updated `libc++` to the latest version. [#8324](https://github.com/ClickHouse/ClickHouse/pull/8324) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Updated `libc++` to the latest version. [#8324](https://github.com/ClickHouse/ClickHouse/pull/8324) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Build ICU library from sources. This fixes [#6460](https://github.com/ClickHouse/ClickHouse/issues/6460). [#8219](https://github.com/ClickHouse/ClickHouse/pull/8219) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Build ICU library from sources. This fixes [#6460](https://github.com/ClickHouse/ClickHouse/issues/6460). [#8219](https://github.com/ClickHouse/ClickHouse/pull/8219) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Switched from `libressl` to `openssl`. ClickHouse should support TLS 1.3 and SNI after this change. This fixes [#8171](https://github.com/ClickHouse/ClickHouse/issues/8171). [#8218](https://github.com/ClickHouse/ClickHouse/pull/8218) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Switched from `libressl` to `openssl`. ClickHouse should support TLS 1.3 and SNI after this change. This fixes [#8171](https://github.com/ClickHouse/ClickHouse/issues/8171). [#8218](https://github.com/ClickHouse/ClickHouse/pull/8218) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fixed UBSan report when using `chacha20_poly1305` from SSL (happens on connect to https://yandex.ru/). [#8214](https://github.com/ClickHouse/ClickHouse/pull/8214) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed UBSan report when using `chacha20_poly1305` from SSL (happens on connect to https://yandex.ru/). [#8214](https://github.com/ClickHouse/ClickHouse/pull/8214) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Debian: Fix mode of default password file [#8075](https://github.com/ClickHouse/ClickHouse/pull/8075) ([proller](https://github.com/proller)) * Fix mode of default password file for `.deb` linux distros. [#8075](https://github.com/ClickHouse/ClickHouse/pull/8075) ([proller](https://github.com/proller))
* Improved expression for getting clickhouse-server pid in clickhouse-test [#8063](https://github.com/ClickHouse/ClickHouse/pull/8063) ([Alexander Kazakov](https://github.com/Akazz)) * Improved expression for getting `clickhouse-server` PID in `clickhouse-test`. [#8063](https://github.com/ClickHouse/ClickHouse/pull/8063) ([Alexander Kazakov](https://github.com/Akazz))
* Updated contrib/googletest to v1.10.0 ... [#8587](https://github.com/ClickHouse/ClickHouse/pull/8587) ([Alexander Burmak](https://github.com/Alex-Burmak)) * Updated contrib/googletest to v1.10.0. [#8587](https://github.com/ClickHouse/ClickHouse/pull/8587) ([Alexander Burmak](https://github.com/Alex-Burmak))
* Fixed TSan report in base64 library. Also updated this library to the latest version, but it doesn't matter. This fixes [#8397](https://github.com/ClickHouse/ClickHouse/issues/8397). [#8403](https://github.com/ClickHouse/ClickHouse/pull/8403) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed ThreadSaninitizer report in `base64` library. Also updated this library to the latest version, but it doesn't matter. This fixes [#8397](https://github.com/ClickHouse/ClickHouse/issues/8397). [#8403](https://github.com/ClickHouse/ClickHouse/pull/8403) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Fix 00600_replace_running_query for processors. ... [#8272](https://github.com/ClickHouse/ClickHouse/pull/8272) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix `00600_replace_running_query` for processors. [#8272](https://github.com/ClickHouse/ClickHouse/pull/8272) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Remove support for `tcmalloc` to make CMakeLists simpler. [#8310](https://github.com/ClickHouse/ClickHouse/pull/8310) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Remove support for `tcmalloc` to make `CMakeLists.txt` simpler. [#8310](https://github.com/ClickHouse/ClickHouse/pull/8310) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Release gcc builds now use `libc++` instead of `libstdc++`. Recently `libc++` was used only with clang. This will improve consistency of build configurations and portability. [#8311](https://github.com/ClickHouse/ClickHouse/pull/8311) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Release gcc builds now use `libc++` instead of `libstdc++`. Recently `libc++` was used only with clang. This will improve consistency of build configurations and portability. [#8311](https://github.com/ClickHouse/ClickHouse/pull/8311) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Enable ICU library for build with Memory Sanitizer. [#8222](https://github.com/ClickHouse/ClickHouse/pull/8222) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Enable ICU library for build with MemorySanitizer. [#8222](https://github.com/ClickHouse/ClickHouse/pull/8222) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Suppress warnings from CapNProto library. [#8224](https://github.com/ClickHouse/ClickHouse/pull/8224) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Suppress warnings from `CapNProto` library. [#8224](https://github.com/ClickHouse/ClickHouse/pull/8224) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Removed special cases of code for tcmalloc, because it's no longer supported. [#8225](https://github.com/ClickHouse/ClickHouse/pull/8225) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Removed special cases of code for `tcmalloc`, because it's no longer supported. [#8225](https://github.com/ClickHouse/ClickHouse/pull/8225) ([alexey-milovidov](https://github.com/alexey-milovidov))
* In CI coverage task, kill the server gracefully to allow it to save the coverage report. This fixes incomplete coverage reports we've been seeing lately. [#8142](https://github.com/ClickHouse/ClickHouse/pull/8142) ([alesapin](https://github.com/alesapin)) * In CI coverage task, kill the server gracefully to allow it to save the coverage report. This fixes incomplete coverage reports we've been seeing lately. [#8142](https://github.com/ClickHouse/ClickHouse/pull/8142) ([alesapin](https://github.com/alesapin))
* Performance tests for all codecs against Float64 and UInt64 values (where applicable). ... [#8349](https://github.com/ClickHouse/ClickHouse/pull/8349) ([Vasily Nemkov](https://github.com/Enmk)) * Performance tests for all codecs against `Float64` and `UInt64` values. [#8349](https://github.com/ClickHouse/ClickHouse/pull/8349) ([Vasily Nemkov](https://github.com/Enmk))
* Python module `minio` need to be added to integration tests runner docker image to have ability to run intergration tests for https://github.com/ClickHouse/ClickHouse/pull/7863 ... [#7875](https://github.com/ClickHouse/ClickHouse/pull/7875) ([Pavel Kovalenko](https://github.com/Jokser)) * `termcap` is very much deprecated and lead to various problems (f.g. missing "up" cap and echoing `^J` instead of multi line) . Favor `terminfo` or bundled `ncurses`. [#7737](https://github.com/ClickHouse/ClickHouse/pull/7737) ([Amos Bird](https://github.com/amosbird))
* In preparation of string optimized IN. [#7739](https://github.com/ClickHouse/ClickHouse/pull/7739) ([Amos Bird](https://github.com/amosbird))
* termcap is very much deprecated and lead to various problems (f.g. missing "up" cap and echoing `^J` instead of multi line) . Favor terminfo or bundled ncurses. [#7737](https://github.com/ClickHouse/ClickHouse/pull/7737) ([Amos Bird](https://github.com/amosbird))
* Fix `test_storage_s3` integration test. [#7734](https://github.com/ClickHouse/ClickHouse/pull/7734) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Fix `test_storage_s3` integration test. [#7734](https://github.com/ClickHouse/ClickHouse/pull/7734) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* support `StorageFile(<format>, null) ` to deser block into given format file without actually write to disk. It's used to perf test format parsers. ... [#8455](https://github.com/ClickHouse/ClickHouse/pull/8455) ([Amos Bird](https://github.com/amosbird)) * Support `StorageFile(<format>, null) ` to insert block into given format file without actually write to disk. This is required for performance tests. [#8455](https://github.com/ClickHouse/ClickHouse/pull/8455) ([Amos Bird](https://github.com/amosbird))
* Added argument `--print-time` to functional tests which prints execution time per test. [#8001](https://github.com/ClickHouse/ClickHouse/pull/8001) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) * Added argument `--print-time` to functional tests which prints execution time per test. [#8001](https://github.com/ClickHouse/ClickHouse/pull/8001) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Added asserts to KeyCondition while evaluating RPN. This will fix warning from gcc-9. [#8279](https://github.com/ClickHouse/ClickHouse/pull/8279) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Added asserts to `KeyCondition` while evaluating RPN. This will fix warning from gcc-9. [#8279](https://github.com/ClickHouse/ClickHouse/pull/8279) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Dump cmake options in CI builds. [#8273](https://github.com/ClickHouse/ClickHouse/pull/8273) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Dump cmake options in CI builds. [#8273](https://github.com/ClickHouse/ClickHouse/pull/8273) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Don't generate debug info for some fat libraries. [#8271](https://github.com/ClickHouse/ClickHouse/pull/8271) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Don't generate debug info for some fat libraries. [#8271](https://github.com/ClickHouse/ClickHouse/pull/8271) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Make log_to_console.xml always log to stderr, regardless of is it interactive or not. [#8395](https://github.com/ClickHouse/ClickHouse/pull/8395) ([Alexander Kuzmenkov](https://github.com/akuzm)) * Make `log_to_console.xml` always log to stderr, regardless of is it interactive or not. [#8395](https://github.com/ClickHouse/ClickHouse/pull/8395) ([Alexander Kuzmenkov](https://github.com/akuzm))
* Removed some unused features from `clickhouse-performance-test` tool. [#8555](https://github.com/ClickHouse/ClickHouse/pull/8555) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Removed some unused features from `clickhouse-performance-test` tool. [#8555](https://github.com/ClickHouse/ClickHouse/pull/8555) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Now we will also search for `lld-X` with corresponding `clang-X` version. [#8092](https://github.com/ClickHouse/ClickHouse/pull/8092) ([alesapin](https://github.com/alesapin)) * Now we will also search for `lld-X` with corresponding `clang-X` version. [#8092](https://github.com/ClickHouse/ClickHouse/pull/8092) ([alesapin](https://github.com/alesapin))
* No changes to prev. release. [#8480](https://github.com/ClickHouse/ClickHouse/pull/8480) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Parquet build improvement. [#8421](https://github.com/ClickHouse/ClickHouse/pull/8421) ([maxulan](https://github.com/maxulan))
* Add tests to https://github.com/ClickHouse/ClickHouse/pull/7769 . One of them is from @CurtizJ in https://github.com/ClickHouse/ClickHouse/issues/8474 [#8486](https://github.com/ClickHouse/ClickHouse/pull/8486) ([Amos Bird](https://github.com/amosbird))
### Other
* Enable optimized parser of `Values` with expressions by default (`input_format_values_deduce_templates_of_expressions=1`) ... [#8231](https://github.com/ClickHouse/ClickHouse/pull/8231) ([tavplubix](https://github.com/tavplubix))
* Fix test with processors. Tiny performance fixes. [#7672](https://github.com/ClickHouse/ClickHouse/pull/7672) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Update contrib/protobuf [#8256](https://github.com/ClickHouse/ClickHouse/pull/8256) ([Matwey V. Kornilov](https://github.com/matwey))
* In preparation of switching to c++20 as a new year celebration. Let's see how CI goes. "May the C++ force be with ClickHouse." [#8447](https://github.com/ClickHouse/ClickHouse/pull/8447) ([Amos Bird](https://github.com/amosbird))
* Addition to [#5773](https://github.com/ClickHouse/ClickHouse/issues/5773) [#8321](https://github.com/ClickHouse/ClickHouse/pull/8321) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Preparation to use `tid` everywhere. This is needed for [#7477](https://github.com/ClickHouse/ClickHouse/issues/7477) [#8276](https://github.com/ClickHouse/ClickHouse/pull/8276) ([alexey-milovidov](https://github.com/alexey-milovidov))
### Bugfix
* Fix dictionary reload if it has `invalidate_query`, which stopped updates and some exception on previous update tries. [#8029](https://github.com/ClickHouse/ClickHouse/pull/8029) ([alesapin](https://github.com/alesapin))
### Bugfix;
* Fixed error in function `arrayReduce` that may lead to "double free" and error in aggregate function combinator `Resample` that may lead to memory leak. Added aggregate function `aggThrow`. This function can be used for testing purposes. [#8446](https://github.com/ClickHouse/ClickHouse/pull/8446) ([alexey-milovidov](https://github.com/alexey-milovidov))
### Build Improvement
* Arrow flatc cleanup [#8421](https://github.com/ClickHouse/ClickHouse/pull/8421) ([maxulan](https://github.com/maxulan))
* More GCC warnings [#8221](https://github.com/ClickHouse/ClickHouse/pull/8221) ([kreuzerkrieg](https://github.com/kreuzerkrieg)) * More GCC warnings [#8221](https://github.com/ClickHouse/ClickHouse/pull/8221) ([kreuzerkrieg](https://github.com/kreuzerkrieg))
### Build/Testing/Packaging Improvement;
* Package for Arch Linux now allows to run ClickHouse server, and not only client. [#8534](https://github.com/ClickHouse/ClickHouse/pull/8534) ([Vladimir Chebotarev](https://github.com/excitoon)) * Package for Arch Linux now allows to run ClickHouse server, and not only client. [#8534](https://github.com/ClickHouse/ClickHouse/pull/8534) ([Vladimir Chebotarev](https://github.com/excitoon))
* Fix test with processors. Tiny performance fixes. [#7672](https://github.com/ClickHouse/ClickHouse/pull/7672) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
* Update contrib/protobuf. [#8256](https://github.com/ClickHouse/ClickHouse/pull/8256) ([Matwey V. Kornilov](https://github.com/matwey))
* In preparation of switching to c++20 as a new year celebration. "May the C++ force be with ClickHouse." [#8447](https://github.com/ClickHouse/ClickHouse/pull/8447) ([Amos Bird](https://github.com/amosbird))
### Experimental Feature ### Experimental Feature
* Added experimental setting `min_bytes_to_use_mmap_io`. It allows to read big files without copying data from kernel to userspace. The setting is disabled by default. Recommended threshold is about 64 MB, because mmap/munmap is slow. [#8520](https://github.com/ClickHouse/ClickHouse/pull/8520) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Added experimental setting `min_bytes_to_use_mmap_io`. It allows to read big files without copying data from kernel to userspace. The setting is disabled by default. Recommended threshold is about 64 MB, because mmap/munmap is slow. [#8520](https://github.com/ClickHouse/ClickHouse/pull/8520) ([alexey-milovidov](https://github.com/alexey-milovidov))
* Reworked quotas as a part of access control system. Added new table `system.quotas`, new functions `currentQuota`, `currentQuotaKey`, new SQL syntax `CREATE QUOTA`, `ALTER QUOTA`, `DROP QUOTA`, `SHOW QUOTA`. [#7257](https://github.com/ClickHouse/ClickHouse/pull/7257) ([Vitaly Baranov](https://github.com/vitlibar))
### New feature
* Reworked quotas as a part of access control system. Added new table `system.quotas`, new functions `currentQuota()`, `currentQuotaKey()`, new SQL syntax `CREATE QUOTA`, `ALTER QUOTA`, `DROP QUOTA`, `SHOW QUOTA`. [#7257](https://github.com/ClickHouse/ClickHouse/pull/7257) ([Vitaly Baranov](https://github.com/vitlibar))
* Allow skipping unknown settings with warnings instead of throwing exceptions. [#7653](https://github.com/ClickHouse/ClickHouse/pull/7653) ([Vitaly Baranov](https://github.com/vitlibar)) * Allow skipping unknown settings with warnings instead of throwing exceptions. [#7653](https://github.com/ClickHouse/ClickHouse/pull/7653) ([Vitaly Baranov](https://github.com/vitlibar))
* Parallel parsing data formats [#6553](https://github.com/ClickHouse/ClickHouse/pull/6553) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
* Reworked row policies as a part of access control system. Added new table `system.row_policies`, new function `currentRowPolicies()`, new SQL syntax `CREATE POLICY`, `ALTER POLICY`, `DROP POLICY`, `SHOW CREATE POLICY`, `SHOW POLICIES`. [#7808](https://github.com/ClickHouse/ClickHouse/pull/7808) ([Vitaly Baranov](https://github.com/vitlibar)) * Reworked row policies as a part of access control system. Added new table `system.row_policies`, new function `currentRowPolicies()`, new SQL syntax `CREATE POLICY`, `ALTER POLICY`, `DROP POLICY`, `SHOW CREATE POLICY`, `SHOW POLICIES`. [#7808](https://github.com/ClickHouse/ClickHouse/pull/7808) ([Vitaly Baranov](https://github.com/vitlibar))
### Security Fix ### Security Fix
* Fixed the possibility of reading directories structure in StorageFile. This fixes [#8536](https://github.com/ClickHouse/ClickHouse/issues/8536) [#8537](https://github.com/ClickHouse/ClickHouse/pull/8537) ([alexey-milovidov](https://github.com/alexey-milovidov)) * Fixed the possibility of reading directories structure in tables with `File` table engine. This fixes [#8536](https://github.com/ClickHouse/ClickHouse/issues/8536). [#8537](https://github.com/ClickHouse/ClickHouse/pull/8537) ([alexey-milovidov](https://github.com/alexey-milovidov))
## ClickHouse release v19.17 ## ClickHouse release v19.17