clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Better performance of string search functions for `Enum` type
- Test `test_refreshable_mat_view/test.py::test_real_wait_refresh` is flaky
- UBsan assert in KeeperTCPHandler
- Collect stacktraces in zookeeper_log
- Don't split blocks on the probe phase in `ConcurrentHashJoin`
- ci: use tmpfs for temporary ClickHouse files
- 03270_object_to_json_alter_wide_merge_tree: Nested columns sizes are inconsistent with local_discriminators column size. Total column sizes: 15, local_discriminators size: 11. (LOGICAL_ERROR)
- Support SETTINGS with implicit ENGINE and mixing engine and query settings
- [Walkthrough] ASOF join different implementations
- Not found column in ReplacingMergeTree table
- Docs
- C++ not yet supported