clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Support incremental rmv with DeltaLake
- Fix min-max indexes skipping rows of JSON columns with a declared Bool path
- perf(insert): Skip `AggregatingSortedAlgorithm` when an insert block has unique sorting keys.
- Fix Alias target schema leak via MySQL COM_FIELD_LIST
- perf(promql): Parallelize flushing samples and recentsamples tables on insert.
- Text index: search a LIKE/ILIKE phrase by one of its words
- Do not lose the part when a non-transactional DETACH fails to copy it to `detached/`
- Do not delete rows whose TTL is 0 when the rest of their part has expired
- AI code review: prefetched context, Loom code index, validated publishing
- MATERIALIZE TTL fails: mutation header lost the GROUP BY key expression column
- Docs
- C++ not yet supported