clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Extend `InverseDictionaryLookupPass` to support `IN` and `notIn` operators for dictionary lookups
- Add assertions in IColumn::mutate to verify deep unique ownership of sub-columns
- Add `user_files_policy` server setting for custom disks in user_files directory
- Enable throttling of lookups for YTsaurus dictionaries
- Automatically Optimize Queries on Time-Partitioned Tables
- Add canThrow interface to functions
- Support `UNIQUE` predicate that tests for no duplicate rows in a subquery
- [CI crash] Double deletion of MergeTreeDataPartCompact
- Column IDs for instant RENAME/DROP in non-replicated MergeTree
- Refuse to materialize columns used in sort key expressions
- Docs
- C++ not yet supported