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2023 Changelog
ClickHouse release v23.2.2.20-stable (f6c269c8df
) FIXME as compared to v23.2.1.2537-stable (52bf836e03
)
Improvement
- Backported in #46914: Allow PREWHERE for Merge with different DEFAULT expression for column. #46831 (Azat Khuzhin).
- Backported in #47022: Allow IPv4 in range(). #46995 (Yakov Olkhovskiy).
Bug Fix
- Backported in #46828: Combined PREWHERE column accumulated from multiple PREWHERE in some cases didn't contain 0's from previous steps. The fix is to apply final filter if we know that it wasn't applied from more than 1 last step. #46785 (Alexander Gololobov).
Build/Testing/Packaging Improvement
- Backported in #47062: Fix error during server startup on old distros (e.g. Amazon Linux 2) and on ARM that glibc 2.28 symbols are not found. #47008 (Robert Schulze).
Bug Fix (user-visible misbehavior in official stable release)
- Backported in #46895: Fixed a bug in automatic retries of
DROP TABLE
query withReplicatedMergeTree
tables andAtomic
databases. In rare cases it could lead toCan't get data for node /zk_path/log_pointer
andThe specified key does not exist
errors if ZooKeeper session expired during DROP and a new replicated table with the same path in ZooKeeper was created in parallel. #46384 (Alexander Tokmakov). - Backported in #46865: Fix a bug in the
Map
data type. This closes #46855. #46856 (Alexey Milovidov). - Backported in #46958: Fix result of LIKE predicates which translate to substring searches and contain quoted non-LIKE metacharacters. #46875 (Robert Schulze).
NOT FOR CHANGELOG / INSIGNIFICANT
- More concise logging at trace level for PREWHERE steps #46771 (Alexander Gololobov).
- Reduce updates of Mergeable Check #46781 (Mikhail f. Shiryaev).