clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- IN operator inconsistent behaviour
- Inconsistent visibility of rows after mixing sequential consistency and quorum settings with Distributed + ReplicatedReplacingMergeTree
- Fix GROUPING function with constant GROUP BY keys
- Validate IN tuple/subquery column count mismatch in analyzer
- a more proper fix for test_ttl_move flakyness ??
- Introduce statistics-based disabling of join runtime filters (#96095)
- CacheBase needs rework to support both UserQuota and TTL cache policies for generic scenarios
- Fix scalar subquery analysis in parametrized view
- Query type is ExceptionBeforeStart but memory_usage > 0 with multiple threads
- Add ARM SVE infrastructure and SVE-optimized paths for unary arithmetic and findExtreme
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- C++ not yet supported