clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix a stuck mutation after `MODIFY COLUMN` from `Nullable` with a `DEFAULT` that reads another column
- Report and kill orphans after Fast test (arm_darwin), with the reason cleanup missed them
- Do not build a key range from a constant holding a `NULL` inside an `Array`, `Map` or `JSON`
- `FileLog` table engine ignores the format settings of its `SETTINGS` clause
- DeltaLake drops rows when a `date` column is compared with a `DateTime` constant
- Check `APPLY` prefixed column names like aliases in the analyzer
- Decode dictionary-encoded fixed-size Parquet columns with one column resize per call
- Append decoded Parquet String values in bulk
- Keep the writer of a `view()` or PromQL read's own MATERIALIZED CTE inside an `IN` set built at runtime
- Fix DeltaLake data skipping dropping rows when a column is compared with a constant of another type
- Docs
- C++ not yet supported