ClickHouse/docs/changelogs/v23.3.9.55-lts.md

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1	2023

2023 Changelog

ClickHouse release v23.3.9.55-lts (b9c5c8622d) FIXME as compared to v23.3.8.21-lts (1675f2264f)

Performance Improvement

• Backported in #52213: Do not store blocks in ANY hash join if nothing is inserted. #48633 (vdimir).
• Backported in #52826: Fix incorrect projection analysis which invalidates primary keys. This issue only exists when query_plan_optimize_primary_key = 1, query_plan_optimize_projection = 1 . This fixes #48823 . This fixes #51173 . #52308 (Amos Bird).

Build/Testing/Packaging Improvement

• Backported in #53019: Packing inline cache into docker images sometimes causes strange special effects. Since we don't use it at all, it's good to go. #53008 (Mikhail f. Shiryaev).
• Backported in #53288: The compiler's profile data (-ftime-trace) is uploaded to ClickHouse Cloud., the second attempt after #53100. #53213 (Alexey Milovidov).
• Backported in #53461: Preserve environment parameters in clickhouse start command. Fixes #51962. #53418 (Mikhail f. Shiryaev).

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

• Fix optimization to move functions before sorting. #51481 (Nikolai Kochetov).
• Fix Block structure mismatch in Pipe::unitePipes for FINAL #51492 (Nikita Taranov).
• Fix binary arithmetic for Nullable(IPv4) #51642 (Yakov Olkhovskiy).
• Support IPv4 and IPv6 as dictionary attributes #51756 (Yakov Olkhovskiy).
• Fix ORDER BY tuple of WINDOW functions #52145 (Alexey Milovidov).
• Disable expression templates for time intervals #52335 (Alexander Tokmakov).
• Fix countSubstrings() hang with empty needle and a column haystack #52409 (Sergei Trifonov).
• Fixed inserting into Buffer engine #52440 (Vasily Nemkov).
• The implementation of AnyHash was non-conformant. #52448 (Alexey Milovidov).
• init and destroy ares channel on demand.. #52634 (Arthur Passos).
• Fix crash in function tuple with one sparse column argument #52659 (Anton Popov).
• clickhouse-keeper: fix implementation of server with poll() #52833 (Andy Fiddaman).
• Fix password leak in show create mysql table #52962 (Duc Canh Le).
• Fix incorrect normal projection AST format #53347 (Amos Bird).
• Fix loading lazy database during system.table select query #53372 (SmitaRKulkarni).
• Fix wrong columns order for queries with parallel FINAL. #53489 (Nikolai Kochetov).
• Fix: interpolate expression takes source column instead of same name aliased from select expression. #53572 (Yakov Olkhovskiy).

NOT FOR CHANGELOG / INSIGNIFICANT

• Fix crash in comparison functions due to incorrect query analysis #52172 (Alexey Milovidov).
• Fix deadlocks in StorageTableFunctionProxy #52626 (Alexander Tokmakov).
• Disable test_reverse_dns_query/test.py #53195 (Alexander Tokmakov).
• Disable test_host_regexp_multiple_ptr_records/test.py #53211 (Alexander Tokmakov).