clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `Right Type Conversion Actions` applied after `FilledJoin` converts right-side UInt32 default(0) to Nullable(0) instead of NULL for unmatched FULL JOIN rows
- `flipCoordinates` on `Geometry` returns raw `Variant` with 4 types instead of `Geometry` with 6, breaking INSERT into `Geometry` columns
- `insertIntoSharedData` ignores `try_infer_datetimes` for DateTime64 inference, storing datetime strings as `DateTime64(9)` instead of `String`
- `tryBuildAdditionalFilterAST` does not deduplicate column names when creating external table for GLOBAL IN with tuples
- recently released 25.8.22 stopped works with google over s3 disks
- Umbrella: Fast test (arm_darwin) — server crashes and hangs across many PRs
- `INTERPOLATE` with `LIMIT BY` throws `NOT_FOUND_COLUMN_IN_BLOCK` due to chain/plan step ordering mismatch
- `urlCluster` URL passwords not masked by `FunctionSecretArgumentsFinder::findOrdinaryFunctionSecretArguments`
- Flaky test: 03373_named_session_try_recreate_before_timeout
- Fix data loss on HDFS writes: flush buffer in WriteBufferFromHDFS::finalizeImpl
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- C++ not yet supported