clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add the mergeTreeParts table function
- Use the primary key index for conditions on the elements of a tuple-typed key column
- Derive deterministic conditions from conditions involving the current time for the query condition cache
- Role settings profiles are not enforced on SET ROLE only at session-start
- Explain why `url` rejects a pattern that `s3` accepts
- Disable 1MB Head prefetch for small random access files (Parquet)
- Store and ingest Prometheus native histograms in the TimeSeries engine
- [DRAFT] prototype versioned autogenerated reference documentation
- Fail the query when skip_unavailable_shards skipped every shard
- Unify `hash` and `parallel_hash` into a single join implementation
- Docs
- C++ not yet supported