clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Flaky test 02962_system_sync_replica_lightweight_from_modifier
- Projection strange behaviour
- EXCHAGE TABLE on ReplicatedMergeTree tables when zookeeper path differs between replicas
- Automatically convert columns to `ColumnConst` for storage.
- ALP compression for Floating point numbers
- Time series functions as window functions
- Order by Primary Keys leading column in descending order is slow when use FINAL keyword with ReplacingMergeTree
- Parallelise pipeline after `CubeStep`
- Flaky integration tests `test_reload_clusters_config`
- SAMPLE BY in materialized views and projections
- Docs
- C++ not yet supported