clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Parameterized views: Support DESCRIBE queries & scalar expressions in new analyzer
- Projections is not used with count(if()) aggregations containing alias columns
- user / role / row policy creation slows down queries
- Better rollbacks of columns
- Reduce client start time in debug/sanitizer mode
- Allowed non-const args for randDistrib
- Projections doesn't work properly if not `MATERIALIZE` when projection added
- CRC-64 does not produce valid CRC-64-ECMA hash
- Implement nested renames
- `select arrayResize([], 3)` throw exception
- Docs
- C++ not yet supported