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ClickHouseยฎ is a real-time analytics database management system
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Click House v26.2.4.23-stable

Click House: v26.2.4.23-stable Release

Release date:
March 5, 2026
Previous version:
v26.2.3.2-stable (released March 1, 2026)
Magnitude:
1,348 Diff Delta
Contributors:
1 total committer
Data confidence:
Commits:
21 impacting commits

44 Features Released with v26.2.4.23-stable

Add restart-only `allow_nullable_tuple_in_extracted_subcolumns` setting for `Tuple/Variant/Dynamic/JSON` tuple subcolumns compatibility
#97299
Use `mongo-c-driver` 2.2.2
#98304
Fix reading subcolumns of ALIAS columns
#95408
Only "alive" replicas (that is connectable) participate in distributed index analysis
#98521
Make jemalloc profiling cover all threads when enabled
#98232
Fix `sumCount` aggregate function not being able to read older serialized states after introduction of `Nullable(Tuple)`
#97502
Collect partitions statistics before parts filtering during merge selection
#98679
Attribute the thread of Iceberg Iterator to query thread group
#97832
Add `KeeperRequestTotalWithSubrequests` profile event
#98348
Add `jemalloc_profiler_sampling_rate` server setting
#97945
Fix column rollback in StorageBuffer::appendBlock
#98551
Fix distributed index analysis with expressions in PK
#98561
Enforce READ ON FILE checks for scalar file() and DESCRIBE TABLE file().
#98115
Fix usage of text index with other skip indexes
#98555
turn on async insert
#97590
Use `postgres` REL_18_3
#98306
Build sets for PREWHERE in ReadFromMergeTree::applyFilters
#98522
CI: skip all jobs for release PRs in filter_job hook
#98740
add setCurrentComponent in MergePlainMergeTreeTask
#98278
Fix wrong results with distributed index analysis and query condition cache
#98269
Set `Coordination::setCurrentComponent` in `prewarmCaches`
#98663
Backport #95408 to 26.2: Fix reading subcolumns of ALIAS columns
#98439
Backport #98306 to 26.2: Use `postgres` REL_18_3
#98596
more clear comments and clean up doubled lines
#98601
Backport #97502 to 26.2: Fix `sumCount` aggregate function not being able to read older serialized states after introduction of `Nullable(Tuple)`
#98820
Backport #98269 to 26.2: Fix wrong results with distributed index analysis and query condition cache
#98563
Backport #97299 to 26.2: Add restart-only `allow_nullable_tuple_in_extracted_subcolumns` setting for `Tuple/Variant/Dynamic/JSON` tuple subcolumns compatibility
#98785
Backport #98522 to 26.2: Build sets for PREWHERE in ReadFromMergeTree::applyFilters
#98774
Backport #98679 to 26.2: Collect partitions statistics before parts filtering during merge selection
#98772
Backport #98663 to 26.2: Set `Coordination::setCurrentComponent` in `prewarmCaches`
#98747

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