clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- docs: document access_control_improvements.enable_read_write_grants
- Fix GROUPING over a Distributed table throwing UNKNOWN_IDENTIFIER `__grouping_set` for long grouping-set constants
- Remove the query analysis that preceded the analyzer
- Restrict server-managed Azure credentials
- Codec MergeTree settings uppercase the whole expression: `Delta` unusable
- Sibling aggregate subqueries over the same tables are answered with one scan each instead of one scan total
- Check `CHECK` privilege before resolving the table
- Reject non-`Parquet` data format for DeltaLake writes
- UNIQUE KEY: batch MultiGet in the SST probe
- Answer m['key'] IN (...) from a keyValuePairs text index
- Docs
- C++ not yet supported