ClickHouse/docs/changelogs/v23.4.3.48-stable.md

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---
sidebar_position: 1
sidebar_label: 2023
---
# 2023 Changelog
### ClickHouse release v23.4.3.48-stable (d9199f8d3cc) FIXME as compared to v23.4.2.11-stable (b6442320f9d)
#### Backward Incompatible Change
* Backported in [#49981](https://github.com/ClickHouse/ClickHouse/issues/49981): Revert "`groupArray` returns cannot be nullable" (due to binary compatibility breakage for `groupArray`/`groupArrayLast`/`groupArraySample` over `Nullable` types, which likely will lead to `TOO_LARGE_ARRAY_SIZE` or `CANNOT_READ_ALL_DATA`). [#49971](https://github.com/ClickHouse/ClickHouse/pull/49971) ([Azat Khuzhin](https://github.com/azat)).
#### Bug Fix (user-visible misbehavior in an official stable release)
* Fix key not found error for queries with multiple StorageJoin [#49137](https://github.com/ClickHouse/ClickHouse/pull/49137) ([vdimir](https://github.com/vdimir)).
* Fix fuzz bug when subquery set is not built when reading from remote() [#49425](https://github.com/ClickHouse/ClickHouse/pull/49425) ([Alexander Gololobov](https://github.com/davenger)).
* Fix postgres database setting [#49481](https://github.com/ClickHouse/ClickHouse/pull/49481) ([Mal Curtis](https://github.com/snikch)).
* Fix AsynchronousReadIndirectBufferFromRemoteFS breaking on short seeks [#49525](https://github.com/ClickHouse/ClickHouse/pull/49525) ([Michael Kolupaev](https://github.com/al13n321)).
* Fix bug in DISTINCT [#49628](https://github.com/ClickHouse/ClickHouse/pull/49628) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Fix assert in SpanHolder::finish() with fibers [#49673](https://github.com/ClickHouse/ClickHouse/pull/49673) ([Kruglov Pavel](https://github.com/Avogar)).
* Fix msan issue in randomStringUTF8(<uneven number>) [#49750](https://github.com/ClickHouse/ClickHouse/pull/49750) ([Robert Schulze](https://github.com/rschu1ze)).
* fix `is_prefix` in OptimizeRegularExpression [#49919](https://github.com/ClickHouse/ClickHouse/pull/49919) ([Han Fei](https://github.com/hanfei1991)).
* Fix IPv6 encoding in protobuf [#49933](https://github.com/ClickHouse/ClickHouse/pull/49933) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
* Avoid deadlock when starting table in attach thread of `ReplicatedMergeTree` [#50026](https://github.com/ClickHouse/ClickHouse/pull/50026) ([Antonio Andelic](https://github.com/antonio2368)).
* Fix assert in SpanHolder::finish() with fibers attempt 2 [#50034](https://github.com/ClickHouse/ClickHouse/pull/50034) ([Kruglov Pavel](https://github.com/Avogar)).
* JIT compilation not equals NaN fix [#50056](https://github.com/ClickHouse/ClickHouse/pull/50056) ([Maksim Kita](https://github.com/kitaisreal)).
* Fix crashing in case of Replicated database without arguments [#50058](https://github.com/ClickHouse/ClickHouse/pull/50058) ([Azat Khuzhin](https://github.com/azat)).
* Fix crash with `multiIf` and constant condition and nullable arguments [#50123](https://github.com/ClickHouse/ClickHouse/pull/50123) ([Anton Popov](https://github.com/CurtizJ)).
* Fix iceberg metadata parsing [#50232](https://github.com/ClickHouse/ClickHouse/pull/50232) ([Kseniia Sumarokova](https://github.com/kssenii)).
* Fix bugs in Poco sockets in non-blocking mode, use true non-blocking sockets [#50252](https://github.com/ClickHouse/ClickHouse/pull/50252) ([Kruglov Pavel](https://github.com/Avogar)).
* Fixed type conversion from Date/Date32 to DateTime64 when querying with DateTime64 index [#50280](https://github.com/ClickHouse/ClickHouse/pull/50280) ([Lucas Chang](https://github.com/lucas-tubi)).
* Fix Keeper deadlock on exception when preprocessing requests. [#50387](https://github.com/ClickHouse/ClickHouse/pull/50387) ([frinkr](https://github.com/frinkr)).
* Fix Log family table return wrong rows count after truncate [#50585](https://github.com/ClickHouse/ClickHouse/pull/50585) ([flynn](https://github.com/ucasfl)).
* Fix bug in `uniqExact` parallel merging [#50590](https://github.com/ClickHouse/ClickHouse/pull/50590) ([Nikita Taranov](https://github.com/nickitat)).
* Do not read all the columns from right GLOBAL JOIN table. [#50721](https://github.com/ClickHouse/ClickHouse/pull/50721) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
#### NOT FOR CHANGELOG / INSIGNIFICANT
* Improve CI: status commit, auth for get_gh_api [#49388](https://github.com/ClickHouse/ClickHouse/pull/49388) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Update github.com/distribution/distribution [#50114](https://github.com/ClickHouse/ClickHouse/pull/50114) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
* Catch issues with dockerd during the build [#50700](https://github.com/ClickHouse/ClickHouse/pull/50700) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).