clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- MergeTree support using TTL to move data to S3 archive storage
- Enable usage of the query condition cache for `SELECT FINAL` queries
- `Unknown expression identifier` could have been omitted because of the identifier resolution cache.
- Add grant for execute function
- Optimize `dictGet` of multiple arguments for polygon dictionaries
- PostgreSQL connection timeout caused MaterializedPostgreSQL to fail.
- TCP server threads metrics (i.e. TCPThreads) is broken for <protocols> (over <tcp_port>/...)
- Unable to import NaN values from postgres
- ClickHouse 25.5.1 QUERY_WITH_SAME_ID_IS_ALREADY_RUNNING
- Improvement of working with globs in ObjectStorages Engines
- Docs
- C++ not yet supported