clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Enforce ColumnConstPr in ActionsDAG
- `supportsDelete` in `DataLakeConfiguration` throws `LOGICAL_ERROR` on freshly-attached data lake table with uninitialized metadata
- Fix `Metadata is not initialized` on `DELETE FROM` for data lakes
- Fix LOGICAL_ERROR for materialized CTE under serialize_query_plan + parallel replicas
- feat(promql): Allow Prometheus handlers to target TimeSeries tables via HTTP headers.
- `RestCatalog::empty` returns inverted result - true when catalog has tables, false when empty
- `jodaMicrosecondOfSecond` reads more fractional digits than scale indicates, causing wrong DateTime64 values
- Arrow Flight:Parameterised queries
- Implement a `SELECT_NULL` privilege in RBAC
- Non-existent user/group names in `clickhouse-su` silently resolve to uid/gid 0 (root) instead of erroring
- Docs
- C++ not yet supported