clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix(Math): proportionsZTest for zero successes
- Persisted `timeSeriesData` table unreadable: LOGICAL_ERROR on every read
- Persisted `loop(db, t)` table pins its source: `DROP TABLE t SYNC` never returns
- Fix wrong results from a text index whose preprocessor is not substring-safe
- `SELECT DISTINCT` fails to deduplicate all-NULL rows from a mixed-branch `multiIf` supertype-coerced to `Nullable(String)` — silent wrong result under default settings
- Enable `-mbranch-protection=pac-ret` on ARM
- `Field::restoreFromDump` cannot parse nested containers, so any map-valued custom setting (`SET SQL_x = {'k':'v'}`) bricks a native-protocol session and fails every distributed query
- Reused MATERIALIZED CTE named after a table re-binds to itself: TOO_DEEP_SUBQUERIES
- feat(promql): Add remote-write v2.
- Introduce Lazy Preformatted Message
- Docs
- C++ not yet supported