clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Do not move AI functions to PREWHERE
- Do not prune a part by statistics while a `RENAME COLUMN` is pending
- Enable query_plan_join_shard_by_pk_ranges by default
- Recompute `MATERIALIZED` columns when a column TTL resets their source
- Fix column loss when a column dropped and re-added with IF NOT EXISTS in the same ALTER statement
- Complete an interrupted part removal when loading outdated parts
- Live flame graphs from streamed profiler samples in the Web UI
- Report the fatal message the CI failure scan found instead of a lost connection
- Fix duplicate filter push-down in plan-based parallel replicas
- Fix KeyCondition CAST fast path pruning rows on DateTime64 scale mismatch
- Docs
- C++ not yet supported