clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- View using Select FROM remote(...) not as performant as on previous versions
- Lock file contents for a backup can have an old UUID taken from the FS cache
- tuple can't be used for PK index scan
- Per-directory developer README
- "Top K" style query with simple aggregation function reads many rows and uses a lot of memory
- is_deleted for ReplacingMergeTree should delete the row during automatic merge
- Dictionary based on MSSQL ODBC throws "Invalid qualified name"
- ClickHouse client failure occurs when moving Vim to the background
- INSERT INTO with SELECT COLUMNS dynamic column selection does not work
- Fixed memory usage reported by dictionaries with `Array` attributes
- Docs
- C++ not yet supported