clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- A higher order array functions to pack bits.
- Vector functions for group comparison
- How to restore ReplicatedMergeTree tables without truncate table or use allow_non_empty_tables settings
- Support of queue_max_wait_ms for max_concurrent_queries_for_user
- Support setting parameters in window functions
- ThreadSanitizer: data race in odbc-bridge (contrib/unixodbc/DriverManager/__handles.c)
- Mutation cannot finish if parts are not byte-identical
- WIP Add Sorting Optimization with General Data Hints
- Add query-rewrite functions
- Plan optimization : remove trivial expression step
- Docs
- C++ not yet supported