clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- 'Docker server image' CI check is flaky
- Empty Unicode-quoted identifier `“”` raises CANNOT_PARSE_QUOTED_STRING instead of SYNTAX_ERROR
- Cherry pick #104120 to 26.2: More obvious fix for catalogs with azure
- Cherry pick #104120 to 26.3: More obvious fix for catalogs with azure
- Add NullCount statistics support for part pruning
- Test `01710_projection_additional_filters` is flaky
- NOT_FOUND_COLUMN_IN_BLOCK: materialize(<col>) on UNION ALL view + projection + WHERE on aggregated column (regression 26.2 → 26.4)
- Fix empty Unicode-quoted identifier raising CANNOT_PARSE_QUOTED_STRING instead of SYNTAX_ERROR
- `loop()` string-splits identifier on '.', misroutes backtick-quoted dotted table names to a different (or nonexistent) database
- Backport #104120 to 26.4: More obvious fix for catalogs with azure
- Docs
- C++ not yet supported