clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Native reader and writer for the Arrow and ArrowStream formats
- ReaderExecutor (1/N): minimal pipeline read path behind use_reader_executor
- Redis simple dictionaries support direct layout
- Add integration test for Iceberg trivial-count optimization
- INNER JOIN on NaN condition returns incorrect rows with HAVING + UNION DISTINCT when enable_optimize_predicate_expression=0
- Improve canceling queries PostgreSQLOutputFormat
- Add non-allocating IColumn::computeHashInto column hash kernel
- [CI crash] Sorting transform failed during chunk processing
- Accept ROW(...) as a SQL-standard alias for Tuple(...)
- ci: set least-privilege permissions on workflow token
- Docs
- C++ not yet supported