clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- DateTime64 with timezone is incorrectly constant-folded in PREWHERE by analyzer
- WIP : Enable use_skip_indexes_for_top_k and test CI
- Fix inconsistent formatting by remembering if an expression was parenthesized
- It is possible to insert corrupted data into quantilesDD, that will throw on `merge()`
- Backport #89429 to 25.3: Fix `Bad get: has Null` from skip index set.
- Backport #89429 to 25.8: Fix `Bad get: has Null` from skip index set.
- Logical error: Expected exactly one connection for shard A (STID: 6428-43a8)
- Logical error: Virtual column A must be filled by range reader (STID: 3833-4750)
- High memory use when listing DataLake/Glue tables (getAllTableNames/SHOW TABLES/system.tables)
- Unexpected behavior when evaluating equality predicates on map keys
- Docs
- C++ not yet supported