clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Setting and row-policy filters skip UNION normalization: `BAD_ARGUMENTS`
- Iceberg writer ignores the metrics modes `write.metadata.metrics.default` / `write.metadata.metrics.column.*`
- Iceberg writer writes no `lower_bounds` / `upper_bounds` for `Float32` / `Float64` columns
- Projections, skip indices and keys ignore or misapply the session settings that change function results
- fix(Functions): intDiv returns wrong 0 for INT_MIN / (INT_MAX + 1)
- Reload gRPC TLS certificates without a restart
- Add `IStorage::producesMergeableState` to decide how to merge aggregated data from a storage
- ReaderExecutor: let merges use the cache as a temporary buffer
- Add `ATTACH PART` part-name preservation setting
- Text index: exact hasPhrase on Array columns with a position increment gap
- Docs
- C++ not yet supported