clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Treat float NaN keys as NULL on JOIN ON
- TLP partitioning over a mixed `RIGHT JOIN` + comma join tree can produce rows from an empty result set
- Add test: Non-`Array` sibling column skip in `tryResolveIdentifierAsNestedPrefix` is untested
- Reintroduce join lazy column indexes
- Skip not-comparison rewrite for float operands (issue #106533)
- Propagate S3Queue streaming task query_id to dependent table inserts
- Speed up `DISTINCT` in order, sort-merge joins, `ORDER BY ... WITH FILL`, `LIMIT BY` and negative `LIMIT BY`
- Make `arrayDistance` code completely unreadable
- Docs: add missing format docs
- Stabilize 00974_query_profiler test
- Docs
- C++ not yet supported