clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Allow materialized_views_ignore_errors to be set in the MV
- Does max_bytes_before_external_sort affect window functions (e.g., DENSE_RANK)? Query fails with memory limit exceeded
- Improvement: S2 spatial functions as primary key conditions for granule pruning
- Vector similarity index: Upgrade from SimSIMD to NumKong
- ALTER TABLE UPDATE freezes transitive MATERIALIZED columns at INSERT-time value (regression from #99281)
- all merge tasks are aborted when dropping a partition.
- Respect detached data parts with invalid names for NumberOfDetachedParts
- accurateCastOrNull to QBit silently produces wrong values when array elements lose precision
- 🐛 Bug: `extremes=1` causes exception with `AggregateFunctionStateData` (`argMaxState`) due to invalid comparison
- Fix `GRANT CURRENT GRANTS` to account for implicit privileges
- Docs
- C++ not yet supported