clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Enable `allow_aggregate_partitions_independently` by default
- Optimize `LIMIT BY` when `BY` columns is a prefix of the primary key
- Support ANY/SOME/ALL on array expressions
- Fix LOGICAL_ERROR 'Cannot add simple transform to empty Pipe' in ReadFromMergeTree::readInOrder
- Make Context::clearCaches defensive against uninitialized caches
- Fix flaky 01293_show_clusters: lower log level in DatabaseReplicated::tryGetCluster
- Drivers for executable user-defined functions
- Support Iceberg tables in Unity Catalog and Delta Lake tables in Glue Catalog
- Fix LimitTransform WITH TIES assertion on empty virtual-row chunk
- Parallelize Iceberg delete-manifest processing
- Docs
- C++ not yet supported