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ClickHouse/docs/changelogs/v21.6.4.26-stable.md

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1 2022

2022 Changelog

ClickHouse release v21.6.4.26-stable FIXME as compared to v21.6.3.14-stable

Bug Fix

  • Backported in #24969: Allow NULL values in postgresql protocol. Closes #22622. #24857 (Kseniia Sumarokova).
  • Backported in #25186: Fixed bug with declaring S3 disk at root of bucket. Earlier, it reported an error: ``` [heather] 2021.05.10 02:11:11.932234 [ 72790 ] {2ff80b7b-ec53-41cb-ac35-19bb390e1759} executeQuery: Code: 36, e.displayText() = DB::Exception: Key name is empty in path style S3 URI: (http://172.17.0.2/bucket/) (version 21.6.1.1) (from 127.0.0.1:47994) (in query: SELECT policy_name FROM system.storage_policies), Stack trace (when copying this message, always include the lines below):. #24898 (Vladimir Chebotarev).
  • Backported in #25023: Fix limit/offset settings for distributed queries (ignore on the remote nodes). #24940 (Azat Khuzhin).
  • Backported in #25049: Fix extremely rare error Tagging already tagged part in replication queue during concurrent alter move/replace partition. Possibly fixes #22142. #24961 (alesapin).
  • Backported in #25081: Fix wrong result when using aggregate projection with not empty GROUP BY key to execute query with GROUP BY by empty key. #25055 (Amos Bird).
  • Backported in #25107: Fix bug which allows creating tables with columns referencing themselves like a UInt32 ALIAS a + 1 or b UInt32 MATERIALIZED b. Fixes #24910, #24292. #25059 (alesapin).
  • Backported in #25106: Fix bug with constant maps in mapContains that lead to error empty column was returned by function mapContains. Closes #25077. #25080 (Kruglov Pavel).
  • Backported in #25143: Fix crash in query with cross join and joined_subquery_requires_alias = 0. Fixes #24011. #25082 (Nikolai Kochetov).
  • Backported in #25157: Fix possible parts loss after updating up to 21.5 in case table used UUID in partition key. (It is not recommended to use UUID in partition key). Fixes #25070. #25127 (Nikolai Kochetov).
  • Backported in #25182: Do not use table's projection for SELECT with FINAL. It is not supported yet. #25163 (Amos Bird).

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