clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- feat(promql): Allow Prometheus handlers to target TimeSeries tables via HTTP headers.
- `RestCatalog::empty` returns inverted result - true when catalog has tables, false when empty
- `jodaMicrosecondOfSecond` reads more fractional digits than scale indicates, causing wrong DateTime64 values
- Arrow Flight:Parameterised queries
- Implement a `SELECT_NULL` privilege in RBAC
- Non-existent user/group names in `clickhouse-su` silently resolve to uid/gid 0 (root) instead of erroring
- Nested Dynamic/Variant in Tuple/Array bypasses min/max type validation
- Int128/Int256 values in Tuple/Map fail to convert to JSON type due to unconditional `quote_64bit_integers=false`
- `deltaSumTimestamp` returns wrong results for signed integers crossing from negative to positive
- `TableFunctionSecretsVisitor::needChildVisit` misses UNION nodes, exposing credentials in EXPLAIN output
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- C++ not yet supported