clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Block structure mismatch in `UnionStep` stream when `UNION ALL` branches differ only in `WHERE` and one branch's predicate constant-folds (server abort `LOGICAL_ERROR`)
- ALTER MOVE out-of-bounds to another disk
- Converting from MergeTree to ReplicatedMergeTree
- Fix "Too many marks" for text index on an empty merged part
- ci: fix CLICKHOUSE_CI_LOGS_HOST not set when logs_export_start runs in a separate process
- Virtual row with union produces wrong result
- Add read-checksums command to clickhouse-disks
- Correct no-random-settings rationale in 04103_user_network_bandwidth_throttler
- minmax skip index prunes NaN granule under negated float range predicate (`NOT ((val >= a) AND (val <= b))`)
- Add PDX vector similarity index method
- Docs
- C++ not yet supported