clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Stop pruning partitions by rewriting modulo() to moduloLegacy()
- trino dialect: fix array_except, flatten and reverse to match Trino semantics
- changes() predicate is bit identity, not IEEE equality plus a NaN guard
- mapAdd/mapSubtract throw BAD_GET on Decimal32/Decimal64 values
- Missing documentation reference for access_control_improvements.enable_read_write_grants
- Backward code-point count budgets a forward walk: rightUTF8 drops trailing bytes
- Fix silent row loss for Nullable(UInt64) in space-filling curves
- `NOT_FOUND_COLUMN_IN_BLOCK` for a materialized CTE inside an `IN` subquery with parallel replicas when `parallel_replicas_local_plan = 0`
- Unbounded `DateLUT` growth remains: dot-padded and `file:` time zone names
- [RFC] Unified `bloom_filter` skip index with a tokenizer and automatic sizing
- Docs
- C++ not yet supported