clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Tests: close measured llvm-coverage gaps (batch 2)
- Perf(SIMD): Speed up find_first_symbols with AVX2
- Fix(TimeSeries): seriesPeriodDetectFFT frequency calculation
- Fix(Analyzer): Wrong result when resolving ARRAY JOIN subcolumns
- Update the `update-contrib` skill: pipeline mode, Rust notes split out
- Cheaper hashing and a cache-line-blocked bloom filter for join runtime filters
- Fewer copies and less zeroing in the adaptive aggregation staging and merge
- vector_search_use_quantized_codes reads codes plus the full column for every row once the table has a patch part (more bytes than a plain scan)
- Pin the stress readiness probe to the native port and capture stacks when it gives up
- Add aliases for `allow_experimental` settings, pt. II
- Docs
- C++ not yet supported