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Pull requests: ClickHouse/ClickHouse

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Pull requests list

Decouple 04321_table_readonly_background_merges from the global TTL merge slot count can be tested Allows running workflows for external contributors comp-testing Test content only (no production code). groeneai-origin-review-human PR origin: human review feedback on a groeneai PR pr-ci
#119884 opened Sep 14, 2026 by groeneai Collaborator Loading…
3
Docs: document GCP Shared VPC for BYOC bring-your-own-VPC pr-documentation Documentation PRs for the specific code PR
#119881 opened Sep 14, 2026 by mintlify Bot Loading…
10
Fix TTL GROUP BY for columns with nested LowCardinality types can be tested Allows running workflows for external contributors comp-ttl TTL rules and TTL merges (moving/recompressing/rolling-up/deleting parts). groeneai-origin-follow-up PR origin: groeneai's own out-of-scope finding during its PR work pr-bugfix Pull request with bugfix, not backported by default
#119879 opened Sep 14, 2026 by groeneai Collaborator Loading…
3
Fix the _headers virtual column's position, its cached-count value and a Hive key of the same name can be tested Allows running workflows for external contributors comp-table-functions Table functions for temporary read/write to external systems (FROM ... tableFunction()). groeneai-origin-ci-master PR origin: master/nightly CI monitoring finding pr-bugfix Pull request with bugfix, not backported by default
#119878 opened Sep 14, 2026 by groeneai Collaborator Loading…
8
Add BPE tokenization with tokenizeBPE and detokenizeBPE comp-regular-function Regular scalar functions: string processing, data conversion, arithmetic, math, comparison, condi... external Author is not a member of the ClickHouse organization
#119877 opened Sep 14, 2026 by mosya415 Contributor Loading…
Backport #112338 to 26.3: Fix a crash when reading a nullable subcolumn of a Variant or Dynamic column pr-backport Changes, backported to release branch. Do not use manually - automated use only! pr-critical-bugfix
#119875 opened Sep 14, 2026 by robot-ch-test-poll2 Contributor Loading…
@alexey-milovidov @groeneai
1
Combine small blocks into one Arrow IPC record batch on output can be tested Allows running workflows for external contributors comp-formats Input/output formats (CSV/JSON/Parquet/ORC/Arrow/Protobuf/etc.). groeneai-origin-request PR origin: a maintainer pinged or directed groeneai pr-improvement Pull request with some product improvements
#119873 opened Sep 14, 2026 by groeneai Collaborator Loading…
1
6
Fix reading one element past the end of the parsed sequenceMatch pattern can be tested Allows running workflows for external contributors comp-aggregate-functions Aggregate function implementations (sum, avg, count, quantile, combinators, etc.). groeneai-origin-ci-master PR origin: master/nightly CI monitoring finding pr-bugfix Pull request with bugfix, not backported by default
#119871 opened Sep 14, 2026 by groeneai Collaborator Loading…
6
Fewer copies and less zeroing in the adaptive aggregation staging and merge comp-aggregation GROUP BY / aggregation framework (hash tables, spilling, external aggregation). pr-performance Pull request with some performance improvements
#119870 opened Sep 14, 2026 by thevar1able Member • Draft
4
Cheaper hashing and a cache-line-blocked bloom filter for join runtime filters comp-joins JOINs end-to-end (planning hooks + runtime join operators/algorithms). Single bucket to avoid pla... pr-performance Pull request with some performance improvements
#119869 opened Sep 14, 2026 by thevar1able Member • Draft
4
Add validate_group_by_all_key_types to gate the GROUP BY ALL key type validation can be tested Allows running workflows for external contributors comp-query-analyzer Semantic analysis + logical/physical planning + rewrites (Analyzer and Planner modules). groeneai-origin-request PR origin: a maintainer pinged or directed groeneai pr-backward-incompatible Pull request with backwards incompatible changes
#119868 opened Sep 14, 2026 by groeneai Collaborator Loading…
1
5
Update the vendored nats-io client to fix a stalled NATS subscription and a JetStream fetch deadlock can be tested Allows running workflows for external contributors comp-external-dependencies Third-party deps updates in contrib/, vendored code, and platform base libraries. groeneai-origin-request PR origin: a maintainer pinged or directed groeneai manual approve Manual approve required to run CI pr-bugfix Pull request with bugfix, not backported by default submodule changed At least one submodule changed in this PR.
#119867 opened Sep 14, 2026 by groeneai Collaborator Loading…
6
NightlyChangelog: follow revert chains through their targets comp-ci-infrastructure CI/CD pipelines (GitHub Actions, CI scripts, runners). pr-ci
#119866 opened Sep 13, 2026 by alexey-milovidov Member Loading…
2
Respect UDF determinism in the legacy predicate push-down comp-query-analyzer Semantic analysis + logical/physical planning + rewrites (Analyzer and Planner modules). pr-bugfix Pull request with bugfix, not backported by default
#119865 opened Sep 13, 2026 by alexey-milovidov Member Loading…
3
Update the update-contrib skill: pipeline mode, Rust notes split out comp-documentation Documentation (docs, examples, READMEs). pr-not-for-changelog This PR should not be mentioned in the changelog submodule changed At least one submodule changed in this PR.
#119864 opened Sep 13, 2026 by thevar1able Member • Draft
4
Keep the part sorted when TTL GROUP BY ... SET rewrites a sorting key column comp-ttl TTL rules and TTL merges (moving/recompressing/rolling-up/deleting parts). pr-bugfix Pull request with bugfix, not backported by default
#119863 opened Sep 13, 2026 by alexey-milovidov Member Loading…
1
@alexey-milovidov
5
Make system.one and bounded numbers reads serializable for distributed plan fragments comp-parallel-replicas Parallel reading from replicas for query speed (not data replication consistency). pr-improvement Pull request with some product improvements
#119862 opened Sep 13, 2026 by devcrafter Member • Draft
5
Fix wrong results from a direct join into a MergeTree table with plan-based parallel replicas can be tested Allows running workflows for external contributors comp-joins JOINs end-to-end (planning hooks + runtime join operators/algorithms). Single bucket to avoid pla... groeneai-origin-issue PR origin: picked up an external GitHub issue pr-bugfix Pull request with bugfix, not backported by default
#119861 opened Sep 13, 2026 by groeneai Collaborator Loading…
5
Do not use parallel replicas for a correlated subquery in a mergeTreeAnalyzeIndexes predicate can be tested Allows running workflows for external contributors comp-parallel-replicas Parallel reading from replicas for query speed (not data replication consistency). groeneai-origin-request PR origin: a maintainer pinged or directed groeneai pr-bugfix Pull request with bugfix, not backported by default
#119860 opened Sep 13, 2026 by groeneai Collaborator Loading…
4
Fix FixedString tags in timeSeriesTagsToMap can be tested Allows running workflows for external contributors comp-promql PromQL / time-series subsystem: TimeSeries storage engine, PromQL parser, PromQL-to-SQL converter... external Author is not a member of the ClickHouse organization pr-bugfix Pull request with bugfix, not backported by default
#119859 opened Sep 13, 2026 by fallintoplace Contributor Loading…
3
Fix: Preserve timezone in timeSeriesRange DateTime64 results can be tested Allows running workflows for external contributors comp-promql PromQL / time-series subsystem: TimeSeries storage engine, PromQL parser, PromQL-to-SQL converter... external Author is not a member of the ClickHouse organization pr-bugfix Pull request with bugfix, not backported by default
#119858 opened Sep 13, 2026 by fallintoplace Contributor Loading…
@alexey-milovidov
2
Backport #119317 to 26.3: Fix a crash and a LOGICAL_ERROR when trim(BOTH '' FROM x) is used where a function is expected pr-backport Changes, backported to release branch. Do not use manually - automated use only! pr-critical-bugfix
#119854 opened Sep 13, 2026 by robot-ch-test-poll4 Contributor Loading…
@PedroTadim @alexey-milovidov @groeneai
3
Fix a server crash on a NATS table whose credentials the broker rejects comp-message-queues Message queue integrations (Kafka, RabbitMQ, NATS table engines for stream ingestion/egress). pr-critical-bugfix pr-must-backport Pull request should be backported intentionally. Use this label with great care! submodule changed At least one submodule changed in this PR.
#119853 opened Sep 13, 2026 by alexey-milovidov Member Loading…
1
@alexey-milovidov
11
Escape the APPLY column transformer's function name and column-name prefix when formatting can be tested Allows running workflows for external contributors comp-sql-syntax SQL/grammar parsing, AST nodes, syntax-level features. groeneai-origin-self PR origin: self-found defect (impact-bar validated) pr-bugfix Pull request with bugfix, not backported by default
#119851 opened Sep 13, 2026 by groeneai Collaborator Loading…
4
Confine the local filesystem locations a custom disk defined in SQL can name comp-multidisk Multiple disks/volumes storage policies, disk abstractions. pr-backward-incompatible Pull request with backwards incompatible changes
#119850 opened Sep 13, 2026 by alexey-milovidov Member Loading…
5
ProTip! Find all pull requests that aren't related to any open issues with -linked:issue.