clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Cannot start clickhouse-server
- Another view bad result after re-attach
- Incorrect results when OR combines conditions on columns with different skip index types (set + ngrambf_v1)
- clickhouse-test: reset enabled failpoints after no-parallel tests
- [WIP] Adaptive Compression Codec Selection
- Fix handling of 403 from Azure + error-handling improvements
- darwin fast test: spawn watchdog child via posix_spawn to avoid SIGILL on macOS 26
- Fix view roundtrip wrong result for EXCEPT/INTERSECT with UNION children
- Preserve column names and support multi-column SELECT in `InjectRandomOrderIfNoOrderByPass`
- Add regression test for set skip index with IS TRUE / IS FALSE / IS UNKNOWN
- Docs
- C++ not yet supported