clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Honour query cancellation in the `ReadWriteBufferFromHTTP` retry loop
- Fix non-deterministic `quantileDeterministic` under parallel replicas and distributed queries
- Add compare-chain derived conjuncts as indexHint to avoid per-row cost
- Docs: improve Managed and Open Source ClickStack onboarding
- Do not abort the server when DDL cleanup removes the shard lock
- Do not fail a query when key analysis cannot apply a monotonic chain
- Let read-in-order propagate through SpillingHashJoin
- Fix wrong intDiv/divide monotonicity for a constant dividend
- Reject incomplete per-part statistics estimates
- Do not evaluate a potentially throwing PREWHERE condition ahead of its guard
- Docs
- C++ not yet supported