clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Restore PREWHERE and avoid duplicate sets in mutations
- Fix rows dropped when a file-like table has a data column named `_idx` or `_path`
- Serialize the side of every join input in a distributed query plan
- `__topKFilter` threshold loses nested `Dynamic`/`Variant` type, drops rows
- Fix lock-order inversion between DDL guards of tables and their inner tables
- Support partially matched Iceberg manifests in DROP PARTITION
- Do not rerun unrelated tests for digit-named data files in the flaky check
- Read the columns of a compact part granule in storage order
- Order `sequenceNextNode` events by the full `UInt64` timestamp
- Avoid rewriting compact parts during TTL recalculation
- Docs
- C++ not yet supported