clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- [WIP] ALTER command sees previous commands
- Compare an Enum with a string by value regardless of constness
- Skip granules using the sorting key and the primary index
- Improvements to expression compilation (`compile_expressions`)
- Analyzer: UNKNOWN_IDENTIFIER error after analysis of dropped if expression branch
- Stream the `system.parts` family in chunks bounded by bytes
- `CANNOT_COMPRESS` when the query result cache or `Memory` engine compresses a column bigger than about 1.97 GiB
- Fix missing rows in text index with case-insensitive regex alternations
- ORDER BY ... COLLATE sorts wrong with ICU reorder or kv-space keywords
- Bucketed `Map`: `m[nan]` misses `-nan` keys hashed into another bucket
- Docs
- C++ not yet supported