clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Aggregating over `x IN (subquery using shardNum())` from `remote()`/`Distributed` fails: 10 NOT_FOUND_COLUMN_IN_BLOCK — initiator and shard disagree on the `__set_` id
- Materialized CTE over Distributed: 49 LOGICAL_ERROR "Reading from materialized CTE before its materialization completed - DelayedPortsProcessor gate is missing" survives the #108924 fix
- Fix two stateless tests a Replicated database refuses to run
- Backport #111162 to 26.6: Don't copy the file-info manifest in BackupsWorker::writeBackupEntries
- Backport #111379 to 26.6: Fix misreporting of datalake catalog errors as missing tables
- Accept PromQL line comments at EOF
- Reject invalid PromQL Unicode surrogate escapes
- Backport #111379 to 26.3: Fix misreporting of datalake catalog errors as missing tables
- Backport #111379 to 26.5: Fix misreporting of datalake catalog errors as missing tables
- Backport #111379 to 25.8: Fix misreporting of datalake catalog errors as missing tables
- Docs
- C++ not yet supported