clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Rewrite the statistics cache: cache per data part on demand, instead of caching combined statistics per set of parts
- Feat: Add static `PIVOT` support
- Collision check never renders JSON shared-data streams: corrupt part still accepted
- Fix escaped braces in format
- Fix: Parse URL parameter names without values
- Fix toInt32OrDefault for Decimal overflow
- `Style check` commit status silently dropped from PR commits
- Fix: Support NULL defaults in lag and lead window functions
- Add test: Opaque payload validation untested: trailing bytes, tag without type name
- `min` over an `Array`/`Tuple`/`Map` with `Nullable` elements depends on block layout: a NULL-bearing value never wins inside one block but wins on the state-merge path
- Docs
- C++ not yet supported