clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Release pull request for branch 26.5
- Window function with lagInFrame over Map columns causes OOM on 8GB RAM for ~3M rows
- Reject nested Dynamic/Variant in min/max aggregates and minmax indexes
- Expose aggregate dictionary metrics in system.asynchronous_metrics
- last_success_time / next_refresh_time inconsistency in system.view_refreshes
- Restore PK/skip-index pruning for PREWHERE IN (subquery)
- Redis handler
- Backport #105220 to 25.8: Fix race in DNSCacheUpdater::run + Context::reloadClusterConfig
- Bump `mongo-cxx-driver` to r4.3.0
- RFC: Resource usage observability for executable user-defined functions
- Docs
- C++ not yet supported