clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add `total_memory_profiler_sample_probability` setting alias and enable the memory sample profiler on CI
- Add replica_host configuration for DatabaseReplicated
- use Double-Array Aho-Corasick to support fast multiSearchAny over > 255 patterns
- Support hard links in the disks with `plain_rewritable` metadata
- Add test for vector search on Distributed tables
- Try using optimised hex encode and decode for `hex`
- The `distinct` operation can be executed in parallel on a per-partition basis
- Experimental part pruning by partition ID prefix
- Add PGN (portable game notation) input format
- Fix logical error in getMinMaxTime() when Nullable DateTime column has all NULLs
- Docs
- C++ not yet supported