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2025 Changelog

docs/changelogs/v25.5.4.38-stable.md

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2025 Changelog

ClickHouse release v25.5.4.38-stable (304d67604cf) FIXME as compared to v25.5.3.75-stable (3321577b6dd)

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

  • Backported in #82187: Fix logical error during materialize projection when column type was changed to Nullable. #80741 (Pavel Kruglov).
  • Backported in #82332: Fix IN execution with transform_null_in=1 with null in the left argument and non-nullable subquery result. #81584 (Pavel Kruglov).
  • Backported in #82177: Don't validate experimental/suspicious types in default/materialize expression execution during reading from existing table. #81618 (Pavel Kruglov).
  • Backported in #82032: Fix the issue where required columns are not read during scalar correlated subquery processing. Fixes #81716. #81805 (Dmitry Novik).
  • Backported in #82324: In previous versions, the server returned excessive content for requests to /js. This closes #61890. #81895 (Alexey Milovidov).
  • Backported in #82236: Previously, MongoDB table engine definitions could include a path component in the host:port argument which was silently ignored. The mongodb integration refuses to load such tables. With this fix we allow loading such tables and ignore path component if MongoDB engine has five arguments, using the database name from arguments. Note: The fix is not applied for newly created tables or queries with mongo table function, as well as for dictionary sources and named collections. #81942 (Vladimir Cherkasov).
  • Backported in #82098: Fixed possible crash in Aggregator in case of exception during merge. #82022 (Nikita Taranov).
  • Backported in #82552: Fix LOGICAL_ERROR and following crash when using the same column in the TTL for GROUP BY and SET. #82054 (Pablo Marcos).
  • Backported in #82154: Fixing copy-paste error in arraySimilarity, disallowing the use of UInt32 and Int32 weights. Update tests and docs. #82103 (Mikhail f. Shiryaev).
  • Backported in #82318: Fix the Not found column error for queries with arrayJoin under WHERE condition and IndexSet. #82113 (Nikolai Kochetov).
  • Backported in #82262: Fix bug in glue catalog integration. Now clickhouse can read tables with nested data types where some of subcolumns contain decimals, for example: map<string, decimal(9, 2)>. Fixes #81301. #82114 (alesapin).
  • Backported in #82588: Fix a bug in table dependencies causing Materialized Views to miss INSERT queries. #82222 (Nikolay Degterinsky).
  • Backported in #82523: Add expiration to AWS ECS token so it can be reloaded. #82422 (Konstantin Bogdanov).
  • Backported in #82579: Fix hiding named collection values in logs/query_log. Closes #82405. #82510 (Kseniia Sumarokova).
  • Backported in #82570: Fix a possible crash in logging while terminating a session as the user_id might sometimes be empty. #82513 (Bharat Nallan).

NOT FOR CHANGELOG / INSIGNIFICANT