clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `nonNegativeDerivative` resets at block starts instead of partition starts
- Fix wrong results and a join-order regression from folding filters through `materialize`
- Keep a finished CI job's result and logs when the docker daemon dies at container exit
- Make 02710_aggregation_nested_map_ip_uuid independent of background merges
- Single-snapshot for parallel inserts into Iceberg
- `mapUniqueIndexImplRef` in one pass
- Search long integer slices in 512-byte chunks on AArch64 in `hasAll` and `hasAny`
- Keeper: refuse to roll back committed log entries
- UNIQUE KEY: merge
- Fix `arrayIntersect` matching `Tuple` and `Array` elements whose integer or date values change when cast to the common element type
- Docs
- C++ not yet supported