clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- `group_by_use_nulls` produces empty string instead of `NULL` for `LowCardinality` columns
- Add sequence match events variants
- Fix s3queue deduplication
- Support auxiliary keeper for DatabaseReplicated (Resubmit of #91683).
- Don't re-calculate heavy regex functions if not necessary
- EnumDataType storage benchmark
- clean orphans from keeper snapshots
- executeForVariantOrDynamicAndNull: Bad cast from type DB::ColumnConst to DB::ColumnVariant
- Keeper compatibility with ZooKeeper: Create with TTL
- Fix setting query plan step for join transforms in some places
- Docs
- C++ not yet supported