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ClickHouse/docs/changelogs/v20.6.7.4-stable.md

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ClickHouse release v20.6.7.4-stable FIXME as compared to v20.6.6.7-stable

Bug Fix

  • Backported in #14726: Cleanup data directory after Zookeeper exceptions during CreateQuery for StorageReplicatedMergeTree Engine. #14563 (Bharat Nallan).
  • Backported in #14805: Fix bug when ALTER UPDATE mutation with Nullable column in assignment expression and constant value (like UPDATE x = 42) leads to incorrect value in column or segfault. Fixes #13634, #14045. #14646 (alesapin).
  • Backported in #14723: Fixed missed default database name in metadata of materialized view when executing ALTER ... MODIFY QUERY. #14664 (Alexander Tokmakov).
  • Backported in #14913: Fix SIGSEGV for an attempt to INSERT into StorageFile(fd). #14887 (Azat Khuzhin).
  • Backported in #14945: Fix the issue when some invocations of extractAllGroups function may trigger "Memory limit exceeded" error. This fixes #13383. #14889 (Alexey Milovidov).