clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Introduce statistics-based disabling of join runtime filters (#96095)
- Add SVE support for ColumnVector, aggregate sum, function unary arithmetic and functions comparison
- collect profiles event for part_log
- [IGNORE] Stringzilla insensitive
- Rewrite has(<constant array>, <expr>) to IN
- Push join key filters into MergeTree index during recursive CTE evaluation
- PR: use serialized query plan - part 2
- Window function parallel evaluation can be a problem sometimes
- Allow using external tables with any queries in the interactive mode
- Extend lazy materialization to support LIMIT BY and DISTINCT ON queries
- Docs
- C++ not yet supported