clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix hung root queries caused by endless loop in hedged connections
- arrow-output: Expose row_group_size setting
- Significantly optimize JSON-to-JSON type conversion to avoid full serialize+parse
- Add Empty SETTINGS in metadata for NATS ENGINE
- FORGET partition does not invalidate finished mutations
- [RFC] [Feature Request] Sticky partition-to-shard assignment for Kafka pull ingestion
- validate array sizes in analysisOfVariance and lttb aggregate states
- [RFC] TTL CLEAR INDEX for MergeTree parts
- Add `hasAnyPhrases`/`hasAllPhrases` and coalesce `hasPhrase` OR/AND chains
- Duplicate-ALIAS projection disambiguation from #106404 is incomplete and needs reconciliation (remote()/Distributed, ARRAY JOIN, nested aliases, parallel replicas)
- Docs
- C++ not yet supported