clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Introduce `ColumnsView` to avoid heap allocations for source columns
- docs(h3): correct exact edge length and point-dist example numbers (#102843)
- keeper-bench: dynamic path sets and don't OOM on many nodes
- Fix flaky cancel_insert_when_client_dies tests on fast builds
- Add `max_rows` setting for databases
- Stress test: S3_ERROR "No such key" during background merge on cached_s3_encrypted (foreground merge-read variant, not covered by #108489)
- Fix materialized CTE "gate is missing" error with WITH TOTALS
- [wip] Implementing band join algorithm
- Automatic parallel replicas (parallel_replicas_min_number_of_rows_per_replica > 0) fails RIGHT JOIN with NOT_FOUND_COLUMN_IN_BLOCK
- rewrite_in_to_join produces a join full_sorting_merge/partial_merge cannot execute: valid IN (subquery) throws NOT_IMPLEMENTED with optimizations on
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- C++ not yet supported