clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Do not let test processes inherit the CI runner's output pipe
- Fix materialized CTE "gate is missing" error with extremes and UNION
- Column-native IN/set constant handling (remove Field)
- Parsing a Tuple to JSON fails when a string field stores unencoded binary data
- Feature request: TTL setting for S3Queue failed files + SYSTEM command to clear the failed set in Keeper
- Docs: protect the chDB mirror from direct edits
- `ProfileEvents::Query` and `InitialQuery` are not incremented for async inserts
- A materialized projection silently disables the query condition cache — repeated selective queries get slower than with no projection at all
- NOT_FOUND_COLUMN_IN_BLOCK with ARRAY JOIN, ALIAS columns, and Row Policy on sorting key
- Enable lazy materialization for ORDER BY ... LIMIT in distributed plans (make_distributed_plan=1)
- Docs
- C++ not yet supported