clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Push ORDER BY ... LIMIT n through LEFT/RIGHT joins
- Skip flaky RabbitMQ shutdown integration tests
- Restore default config in `generate-system-tables-docs` to cover system logs
- Naive Sharded Aggregation for high cardinality data
- UNIQUE KEY: index cache (7/N)
- Introduce Deterministic Merge Selection
- UNIQUE KEY: DeleteBitmap primitive and sidecar file I/O (2/N)
- Guard private-only includes with #if CLICKHOUSE_CLOUD (small files)
- UNIQUE KEY: encoder and SST writer primitive (6/N)
- DataLake catalog: getAllTableNames() triggers full per-table S3 metadata fetch during typo-hint lookup on unknown table
- Docs
- C++ not yet supported