clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Backport #93233 to 25.3: Remove unused columns when rebuilding projection on merge.
- Store correct database in DDL dependency for Alias target
- AMBIGUOUS_COLUMN_NAME: Strange behavior in SELECT in WHERE, columns with identical name must have identical, 25.12
- Fix report parser when timeout
- Fix reading subcolumns of ALIAS columns
- ARRAY JOIN strips LowCardinality
- Precompute and prefetch hashes in ColumnsHashing
- Fix column node make nullable
- ReplacingMergeTree should allow setting an explicit PRIMARY KEY for deduplication
- show databases / tables with details (output more information with show commands)
- Docs
- C++ not yet supported