clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Do not parse non-date strings into an existing DateTime variant of Dynamic
- Do not insert defaults for null into an existing Dynamic variant
- Use a token bloom filter index on lowerUTF8 for hasTokenCaseInsensitive
- Cherry pick #127416 to 26.10: Fix `Cannot fold actions for projection` when the join order optimizer reorders an outer join converted to INNER
- Fail Keeper startup when no configured Raft listener can bind
- Cherry pick #125154 to 26.10: Parquet top-K: find the best value of each row group without a virtual comparison per row
- Treat out-of-range DateTime64 values as JSONEachRow input errors
- Cherry pick #119337 to 26.10: Do not prune a part by statistics while an alter mutation is pending
- Carry buffer bounds in `src/Core/MySQL` and enable `-Wunsafe-buffer-usage` there
- Preserve input order for order-sensitive insert destinations
- Docs
- C++ not yet supported