clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add rows_before_limit_at_least to X-ClickHouse-Summary
- `_server_credentials_allowed` changes the identity of a `disk(...)` declared before 26.7, so it can't be re-declared after an upgrade
- Fix scalar and `IN` subqueries mixing up tables whose dotted names coincide
- Parallelize start requests for distributed plan tasks
- `addDays`/`addWeeks`/`subtractDays` on UTC `DateTime64`: 14% slower on aarch64
- Fix Kafka engine statistics: broken default and StorageKafka2 override
- Raise the per-type task limit of a background schedule pool when its size is increased at runtime
- Transitive join filters are propagated to some tables but not others, causing full scans and massive hash join spill
- Single node EXPLAIN PLAN tree = 1: draw plans as boxes
- Register a full URI as the location of Iceberg tables created in a ca…
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