clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add external memory support for LIMIT N BY
- A way to copy table to all shards
- [Umbrella] Cascades optimizer improvements
- Re-run configure when liburing.spec changes
- Transform partition summary has null bounds: Iceberg readers skip the manifest
- fuzzBits 0-row path returns the raw ColumnConst: header folds to unfuzzed input
- Null-rejection trusted for `Array`/`Map` keys padded with `[]`/`{}`, not NULL
- tryConvertFieldToType swallows TYPE_MISMATCH: tuple-IN drops a candidate key
- system.tables totals guard keyed on isDataLake(), which wrappers never forward
- Make ColumnConst refuse patch application
- Docs
- C++ not yet supported