clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Optimize code path for LowCardinality columns in CountMin
- feat: bound replicated merge selection by partition batches
- Fix INNER JOIN cardinality underestimation in join reorder optimizer
- Ground tables JOIN optimization
- remove parenthesis from single EXCEPT column in except_modifier.md
- enable analyzer_compatibility_prefer_alias_over_subcolumn
- Add least_request load balancing mode (Power-of-Two-Choices)
- Add low-level micro benchmark suite for runtime filters
- Improve null handling for runtime filters
- Identifier query parameters work with CREATE USER but fail with CREATE ROLE
- Docs
- C++ not yet supported