clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix `NOT_FOUND_COLUMN_IN_BLOCK` and wrong rows when the `arrayCount`, `dictGet` tuple element or QBit distance rewrite meets a `GROUP BY` key
- Leave the row estimate of a filtered Memory table read unknown in join reordering
- Check access rights of table functions in DESCRIBE as in SELECT
- Fix cluster table functions over a named collection with a locked `'auto'` format or structure
- Fix server abort when an Arrow Flight query throws while finishing
- Docs: rewrite the `JOIN` clause reference as syntax and semantics, and add a JOIN Settings page
- Fix Delta Lake and Iceberg tables becoming unreadable after writing a non-UTF-8 partition value
- Do not move a condition that can throw to PREWHERE in front of the conditions written before it
- Stop read-in-order buffering from reading far past the LIMIT
- Preserve comparison semantics when selecting `ie_join`
- Docs
- C++ not yet supported