clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- use_skip_indexes_on_data_read cause query text index 5x slow when primary key is not exact!
- Native Google Cloud Storage integration (google-cloud-cpp)
- Fix split-dependent hash of JSON/Object columns
- Add ALTER TABLE ... RECOMPRESS COLUMN
- Fix Cap expansion of disjunctive JOIN ON conditions in general join planning
- Optimize text bloom filter granule evaluation: short-circuit multi-ne…
- Trash Schema Benchmark
- Fail allocations from C on memory limit excess instead of overcommitting
- Reserve memory for merges up front
- Materialize sparse sort-key columns in FinishSortingTransform
- Docs
- C++ not yet supported