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sidebar_position: 1
sidebar_label: 2023
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# 2023 Changelog

### ClickHouse release v23.7.6.111-stable (6b047a47504) FIXME as compared to v23.7.5.30-stable (e86c21fb922)

#### Improvement
* Backported in [#54285](https://github.com/ClickHouse/ClickHouse/issues/54285): Enable allow_remove_stale_moving_parts by default. [#54260](https://github.com/ClickHouse/ClickHouse/pull/54260) ([vdimir](https://github.com/vdimir)).

#### Build/Testing/Packaging Improvement
* Backported in [#55291](https://github.com/ClickHouse/ClickHouse/issues/55291): Resource with source code including submodules is built in Darwin special build task. It may be used to build ClickHouse without checkouting submodules. [#51435](https://github.com/ClickHouse/ClickHouse/pull/51435) ([Ilya Yatsishin](https://github.com/qoega)).
* Backported in [#54705](https://github.com/ClickHouse/ClickHouse/issues/54705): Enrich `changed_images.json` with the latest tag from master for images that are not changed in the pull request. [#54369](https://github.com/ClickHouse/ClickHouse/pull/54369) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Backported in [#54683](https://github.com/ClickHouse/ClickHouse/issues/54683): We build and upload them for every push, which isn't worth it. [#54675](https://github.com/ClickHouse/ClickHouse/pull/54675) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#55407](https://github.com/ClickHouse/ClickHouse/issues/55407): Solve issue with launching standalone clickhouse-keeper from clickhouse-server package. [#55226](https://github.com/ClickHouse/ClickHouse/pull/55226) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Backported in [#55723](https://github.com/ClickHouse/ClickHouse/issues/55723): Fix integration check python script to use gh api url - Add Readme for CI tests. [#55716](https://github.com/ClickHouse/ClickHouse/pull/55716) ([Max K.](https://github.com/mkaynov)).

#### Bug Fix (user-visible misbehavior in an official stable release)

* Fix recalculation of skip indexes and projections in `ALTER DELETE` queries [#52530](https://github.com/ClickHouse/ClickHouse/pull/52530) ([Anton Popov](https://github.com/CurtizJ)).
* RFC: Fix filtering by virtual columns with OR expression [#52653](https://github.com/ClickHouse/ClickHouse/pull/52653) ([Azat Khuzhin](https://github.com/azat)).
* Fix reading of unnecessary column in case of multistage `PREWHERE` [#52689](https://github.com/ClickHouse/ClickHouse/pull/52689) ([Anton Popov](https://github.com/CurtizJ)).
* Fix sorting of sparse columns with large limit [#52827](https://github.com/ClickHouse/ClickHouse/pull/52827) ([Anton Popov](https://github.com/CurtizJ)).
* Fix reading of empty `Nested(Array(LowCardinality(...)))` [#52949](https://github.com/ClickHouse/ClickHouse/pull/52949) ([Anton Popov](https://github.com/CurtizJ)).
* Fix adding sub-second intervals to DateTime [#53309](https://github.com/ClickHouse/ClickHouse/pull/53309) ([Michael Kolupaev](https://github.com/al13n321)).
* Fix: moved to prewhere condition actions can lose column [#53492](https://github.com/ClickHouse/ClickHouse/pull/53492) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
* Fix crash in join on sparse column [#53548](https://github.com/ClickHouse/ClickHouse/pull/53548) ([vdimir](https://github.com/vdimir)).
* Fix named_collection_admin alias [#54066](https://github.com/ClickHouse/ClickHouse/pull/54066) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix rows_before_limit_at_least for DelayedSource. [#54122](https://github.com/ClickHouse/ClickHouse/pull/54122) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Fix: allow IPv6 for bloom filter [#54200](https://github.com/ClickHouse/ClickHouse/pull/54200) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
* Check for overflow before addition in `analysisOfVariance` function [#54385](https://github.com/ClickHouse/ClickHouse/pull/54385) ([Antonio Andelic](https://github.com/antonio2368)).
* reproduce and fix the bug in removeSharedRecursive [#54430](https://github.com/ClickHouse/ClickHouse/pull/54430) ([Sema Checherinda](https://github.com/CheSema)).
* Fix aggregate projections with normalized states [#54480](https://github.com/ClickHouse/ClickHouse/pull/54480) ([Amos Bird](https://github.com/amosbird)).
* Fix possible parsing error in WithNames formats with disabled input_format_with_names_use_header [#54513](https://github.com/ClickHouse/ClickHouse/pull/54513) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix rare case of CHECKSUM_DOESNT_MATCH error [#54549](https://github.com/ClickHouse/ClickHouse/pull/54549) ([alesapin](https://github.com/alesapin)).
* Fix zero copy garbage [#54550](https://github.com/ClickHouse/ClickHouse/pull/54550) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Fix "Invalid number of rows in Chunk" in MaterializedPostgreSQL [#54844](https://github.com/ClickHouse/ClickHouse/pull/54844) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Prevent attaching parts from tables with different projections or indices [#55062](https://github.com/ClickHouse/ClickHouse/pull/55062) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).
* Fix deadlock in LDAP assigned role update [#55119](https://github.com/ClickHouse/ClickHouse/pull/55119) ([Julian Maicher](https://github.com/jmaicher)).
* Fix storage Iceberg files retrieval [#55144](https://github.com/ClickHouse/ClickHouse/pull/55144) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix functions execution over sparse columns [#55275](https://github.com/ClickHouse/ClickHouse/pull/55275) ([Azat Khuzhin](https://github.com/azat)).
* Fix bug with inability to drop detached partition in replicated merge tree on top of S3 without zero copy [#55309](https://github.com/ClickHouse/ClickHouse/pull/55309) ([alesapin](https://github.com/alesapin)).
* Fix trash optimization (up to a certain extent) [#55353](https://github.com/ClickHouse/ClickHouse/pull/55353) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Fix parsing of arrays in cast operator [#55417](https://github.com/ClickHouse/ClickHouse/pull/55417) ([Anton Popov](https://github.com/CurtizJ)).
* Fix filtering by virtual columns with OR filter in query [#55418](https://github.com/ClickHouse/ClickHouse/pull/55418) ([Azat Khuzhin](https://github.com/azat)).
* Fix MongoDB connection issues [#55419](https://github.com/ClickHouse/ClickHouse/pull/55419) ([Nikolay Degterinsky](https://github.com/evillique)).
* Destroy fiber in case of exception in cancelBefore in AsyncTaskExecutor [#55516](https://github.com/ClickHouse/ClickHouse/pull/55516) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix crash in QueryNormalizer with cyclic aliases [#55602](https://github.com/ClickHouse/ClickHouse/pull/55602) ([vdimir](https://github.com/vdimir)).
* Fix filtering by virtual columns with OR filter in query (resubmit) [#55678](https://github.com/ClickHouse/ClickHouse/pull/55678) ([Azat Khuzhin](https://github.com/azat)).
* Fix window functions in case of sparse columns. [#55895](https://github.com/ClickHouse/ClickHouse/pull/55895) ([János Benjamin Antal](https://github.com/antaljanosbenjamin)).

#### NO CL CATEGORY

* Backported in [#55704](https://github.com/ClickHouse/ClickHouse/issues/55704):. [#55657](https://github.com/ClickHouse/ClickHouse/pull/55657) ([Antonio Andelic](https://github.com/antonio2368)).

#### NO CL ENTRY

* NO CL ENTRY:  'Revert "Merge pull request [#52395](https://github.com/ClickHouse/ClickHouse/issues/52395) from azat/rust/reproducible-builds"'. [#55517](https://github.com/ClickHouse/ClickHouse/pull/55517) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).

#### NOT FOR CHANGELOG / INSIGNIFICANT

* Test libunwind changes. [#51436](https://github.com/ClickHouse/ClickHouse/pull/51436) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Retry blob listing in test_alter_moving_garbage [#52193](https://github.com/ClickHouse/ClickHouse/pull/52193) ([vdimir](https://github.com/vdimir)).
* add tests with connection reset by peer error, and retry it inside client [#52441](https://github.com/ClickHouse/ClickHouse/pull/52441) ([Sema Checherinda](https://github.com/CheSema)).
* Small fix for HTTPHeaderFilter [#53146](https://github.com/ClickHouse/ClickHouse/pull/53146) ([San](https://github.com/santrancisco)).
* fix Logical Error in AsynchronousBoundedReadBuffer [#53651](https://github.com/ClickHouse/ClickHouse/pull/53651) ([Sema Checherinda](https://github.com/CheSema)).
* Replace dlcdn.apache.org by archive domain [#54081](https://github.com/ClickHouse/ClickHouse/pull/54081) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Fix segfault in system.zookeeper [#54326](https://github.com/ClickHouse/ClickHouse/pull/54326) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Fix CI skip build and skip tests checks [#54532](https://github.com/ClickHouse/ClickHouse/pull/54532) ([SmitaRKulkarni](https://github.com/SmitaRKulkarni)).
* Update WebObjectStorage.cpp [#54695](https://github.com/ClickHouse/ClickHouse/pull/54695) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Use `--filter` to reduce checkout time [#54857](https://github.com/ClickHouse/ClickHouse/pull/54857) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* check if block is empty after async insert retries [#55143](https://github.com/ClickHouse/ClickHouse/pull/55143) ([Han Fei](https://github.com/hanfei1991)).
* MaterializedPostgreSQL: remove back check [#55297](https://github.com/ClickHouse/ClickHouse/pull/55297) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Remove existing moving/ dir if allow_remove_stale_moving_parts is off [#55480](https://github.com/ClickHouse/ClickHouse/pull/55480) ([Mike Kot](https://github.com/myrrc)).
* One final leftover in diff_urls of PRInfo [#55874](https://github.com/ClickHouse/ClickHouse/pull/55874) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).