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ClickHouse® is a real-time analytics database management system

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Click House v26.9.18.11-stable

Click House: v26.9.18.11-stable Release

Release date:

October 13, 2026

Previous version:

v26.9.17.8-stable (released October 12, 2026)

Magnitude:

27 Diff Delta

Contributors:

2 total committers

Data confidence:

Commits:

11 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

Backport #117238 to 26.9: Stop claiming injectivity for `toString` of a folding date-time and `toFixedString` of a `String`

Authored October 13, 2026

Backport #118021 to 26.9: Add an opt-in access control improvement so that readonly restricts SET ROLE

Authored October 13, 2026

Backport #125090 to 26.9: Fix use-after-free of the read buffer when creating an object storage reader throws

Authored October 12, 2026

Backport #124439 to 26.9: Add use_aggregation_memory_tracker setting to gate 26.8 arrayCount lambda regression

Authored October 12, 2026

Backport #125129 to 26.9: Fix INTERPOLATE when a value converted for one target is read by another item

Authored October 12, 2026

Backport #124049 to 26.9: Validate RoaringBitmap data when reading `groupBitmap` state

Authored October 8, 2026

Backport #123403 to 26.9: Do not let use_skip_indexes = 0 disable part min-max pruning

Authored October 12, 2026

Update autogenerated version to 26.9.17.8 and contributors

Authored October 12, 2026

Fix build of the #123796 backport: no tryConvertFieldToTypeExact on this branch

Authored October 8, 2026

Backport #121010 to 26.9: Fix missing materialized-CTE gate when two CTEs of a set subquery read one shared CTE

Authored October 12, 2026

Backport #124991 to 26.9: Fix a filter on a Hive partition column pruning by the data file's column of the same name (revert of revert with a fix)

Authored October 12, 2026

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Top Contributors in v26.9.18.11-stable

robot-clickhouse

groeneai

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