clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add `notHas` function
- Fix data race in shared format init exception rethrow
- Accept fractional unix timestamp for DateTime64 in containers and JSON
- TotalPrimaryKeyBytesInMemoryAllocated metric and the corresponding field in system.tables, system.parts should account for projections' primary key as well
- Storage-policy config reload may claim pre-existing data on newly added disks
- JOIN ON a.id IS NULL AND b.id IS NULL is optimized, but with AND a.id IS NULL = b.id IS NULL it's not
- Array(DateTime64(N)) CSV parsing fails for unquoted fractional unix timestamp (e.g. "1783585473.954")
- Reintroduce borrowed threadgroup async uaf fix
- Backport #109492 to 25.8: Fix segfault in `largestTriangleThreeBuckets` aggregate function
- DDLWorker hangs on leader-only query when one of the replicas is inactive
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