clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- 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
- Skip Parquet row groups the top-K threshold excludes while their data waits to be decoded
- Fix primary key analysis skipping rows for `toMonth`, `toQuarter`, `toDayOfYear` and `toDayOfMonth` over a `DateTime` before local 1970-01-01
- Docs: reorganize ClickHouse connection documentation
- Do not fail the version metadata check on a rollback's in-flight write
- Docs
- C++ not yet supported