clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Refresh the storage policy of a Backup database on every open
- Fix a bad cast when a row policy and PREWHERE both read a converted `Buffer` column
- Fix a logical error when materialized views share one target table
- Add experimental Wallaby floating-point compression codec
- Fix window RANGE frame peer groups ignoring COLLATE
- Correlated EXISTS decorrelates to a CROSS JOIN with severe memory growth when equality columns differ only in nullability
- Build post-hook fails fleet-wide: build-profile INSERT into the CI logs cluster rejected with `MEMORY_LIMIT_EXCEEDED`
- Fix a crash when a spilling join re-enters a HashJoin whose data was released
- Reject duplicate storage namespaces within a policy
- Backport #109932 to 26.6: Fix crash in direct JOIN over MergeTree with PREWHERE (shared PrewhereInfo corrupted by column pruning)
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