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ClickHouse/docs/changelogs/v24.7.5.37-stable.md

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1 2024

2024 Changelog

ClickHouse release v24.7.5.37-stable (f2533ca97b) FIXME as compared to v24.7.4.51-stable (70fe2f6fa5)

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

  • Backported in #68971: Fix the upper bound of the function fromModifiedJulianDay. It was supposed to be 9999-12-31 but was mistakenly set to 9999-01-01. #67583 (PHO).
  • Backported in #68816: Fixed crash in Parquet filtering when data types in the file substantially differ from requested types (e.g. ... FROM file('a.parquet', Parquet, 'x String'), but the file has x Int64). Without this fix, use input_format_parquet_filter_push_down = 0 as a workaround. #68131 (Michael Kolupaev).
  • Backported in #69006: After https://github.com/ClickHouse/ClickHouse/pull/61984 schema_inference_make_columns_nullable=0 still can make columns Nullable in Parquet/Arrow formats. The change was backward incompatible and users noticed the changes in the behaviour. This PR makes schema_inference_make_columns_nullable=0 to work as before (no Nullable columns will be inferred) and introduces new value auto for this setting that will make columns Nullable only if data has information about nullability. #68298 (Kruglov Pavel).
  • Backported in #68884: Fixes #50868. Small DateTime64 constant values returned by a nested subquery inside a distributed query were wrongly transformed to Nulls, thus causing errors and possible incorrect query results. #68323 (Shankar).
  • Backported in #69027: Added back virtual columns _table and _database to distributed tables. They were available until version 24.3. #68672 (Anton Popov).
  • Backported in #68862: Fix possible error Size of permutation (0) is less than required (...) during Variant column permutation. #68681 (Kruglov Pavel).
  • Backported in #68788: Fix issue with materialized constant keys when hashing maps with arrays as keys in functions sipHash(64/128)Keyed. #68731 (Salvatore Mesoraca).
  • Backported in #68909: Fix complex types metadata parsing in DeltaLake. Closes #68739. #68836 (Kseniia Sumarokova).
  • Backported in #69158: Fix possible wrong result during anyHeavy state merge. #68950 (Raúl Marín).
  • Backported in #69118: Fix logical error when we have empty async insert. #69080 (Han Fei).

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