clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Tighten seccomp policy for optional kernel interfaces
- Evaluate remaining low-cost compiler and linker hardening flags
- Measure Clang CFI on the release build configuration
- Do not leak the objects of a merge or mutation cancelled before its part is committed
- Avoid recounting parquet definition levels for flat nullable columns
- Remove columns left unused by join runtime filters, and stop AutoPR keys ignoring computed expressions
- Resolve each command of an ALTER against the columns the previous commands left
- Emit NULL-key and ON-filtered right rows of `parallel_hash` RIGHT/FULL joins from all non-joined streams
- Answer repeated count() with a filter from exact per-granule counts in the query condition cache
- AggregateFunctionMerge on cross-tab-counts state causes segmentation fault in CrossTabCountsState::merge
- Docs
- C++ not yet supported