clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Cherry pick #119846 to 26.3: Reject paths with an embedded NUL byte in filesystem containment checks
- Cherry pick #119846 to 26.7: Reject paths with an embedded NUL byte in filesystem containment checks
- Cherry pick #119846 to 26.8: Reject paths with an embedded NUL byte in filesystem containment checks
- Reorder links
- Text index: merging parts decodes a bit-packed page per posting row id, although a non-interleaved part maps affinely; OPTIMIZE FINAL on 2.5M rows drops 9.3%
- [GPU] Add cuCascade to contrib
- Text index: the merge-time index rebuild is single-threaded; sharding the builders by token hash cuts OPTIMIZE FINAL 37.9% on a 2.5M-row ReplacingMergeTree
- Iceberg: expose catalog labels via system.iceberg_labels
- base: define wraparound in ignore-overflow helpers
- modulo() throws on constant divisor equal to type's minimum value
- Docs
- C++ not yet supported