clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Reuse context from planning in building query pipeline for StorageMerge
- Segmentation fault (STID: 4085-568b)
- AI functions: add RBAC privileges for executing a function
- Join build side chosen by row estimate alone: 407M-row / 141M-key side hashed instead of 365M-row / 87M-key side, 170 s vs 11 s
- Short-circuit evaluation for `coalesce` and `ifNull`
- Fix an error reading an Iceberg table whose `current-snapshot-id` is JSON null
- Skip Iceberg compaction on a table with no current snapshot
- fix(promql): Skip TimeSeries recent samples writes expired on arrival
- Reject a dictionary SETTINGS name that is not a setting at all
- Postpone failed merges of a non-replicated MergeTree table
- Docs
- C++ not yet supported