clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- MergeTree: rethrow retryable errors from checkDataPart instead of returning empty checksums
- Allow query parameters in parameterized view names
- Automatically size initial `GraceHashJoin` buckets
- Backport #108391 to 26.6: Fix data race on `MemoryReservation` release at query finish
- Unexpected results with a minmax index and a NULL-containing `SOME` comparison
- Reland #111979 with a cross-platform server liveness check
- Allow running queries detached from client session
- Fix duplicated keys in nested distributed aggregation with out of order buckets
- Implement PromQL functions absent and count_values
- Radix select for the quantileExact family
- Docs
- C++ not yet supported