clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
Triage Issues!
When you volunteer to triage issues, you'll receive an email each day with a link to an open issue that needs help in this project. You'll also receive instructions on how to triage issues.
Triage Docs!
Receive a documented method or class from your favorite GitHub repos in your inbox every day. If you're really pro, receive undocumented methods or classes and supercharge your commit history.
C++ not yet supported64 Subscribers
Add a CodeTriage badge to clickhouse
Help out
- Issues
- Backport #92925 to 25.8: segfault rebuilding _part_offset projection during CoalescingMergeTree merge
- Drafting DataLake decoupling
- Storage `Join(ALL, RIGHT, ...)` + `QUALIFY NULL`: rewriting `WHERE p` to `WHERE p AND 1` flips 0 rows → all right-side rows with left columns defaulted (no-op rewrite changes result + breaks join matching)
- Block structure mismatch in `UnionStep` stream when `UNION ALL` branches differ only in `WHERE` and one branch's predicate constant-folds (server abort `LOGICAL_ERROR`)
- ALTER MOVE out-of-bounds to another disk
- Converting from MergeTree to ReplicatedMergeTree
- Fix "Too many marks" for text index on an empty merged part
- ci: fix CLICKHOUSE_CI_LOGS_HOST not set when logs_export_start runs in a separate process
- Virtual row with union produces wrong result
- Add read-checksums command to clickhouse-disks
- Docs
- C++ not yet supported