clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- include projection parts in total pk size asynchronous metrics
- Try to fix flaky test 00909_kill_not_initialized_query
- Test icebergS3Cluster to fail for timeout
- Fix SELECT slowdown caused by simple INSERTs holding unused CPU slots
- Use `INCORRECT_DATA` instead of logical error when client side data encoding is incorrect
- feat(promql): Implement Prometheus /api/v1/series, /labels, /label/<name>/values endpoints
- `ReadFromMergeTree` uses `getStorageID().getTableName()` for `_table` virtual column, exposing internal UUID name for MergeTree temporary tables
- `should_skip_column_operation` uses `has` instead of `has || hasNested`, causing `DROP COLUMN IF EXISTS` to silently skip flattened Nested columns
- Remove default config substitution logic (metrika.xml)
- `expandLimitByAll` skips entire mixed expressions instead of extracting non-aggregate subexpressions as documented
- Docs
- C++ not yet supported