clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Iceberg: write a single manifest per INSERT across partitions
- Docs: add nightly ClickStack schema sync workflow
- Keep the Glue table definition on Iceberg commits and refuse to overwrite a concurrent commit
- Fix parseDateTime resetting month and day when weekday follows calendar date
- TimeSeries table functions are broken with parallel replicas: `UNKNOWN_TABLE` on the replicas and duplicated rows
- Strip the table function alias from the structure hint column names
- Send the structure with `DEFAULT` expressions to the nodes of `fileCluster` and `urlCluster`
- Filter `Array(LowCardinality)` through its indexes instead of `filterGeneric`
- Do not drop dependent `DEFAULT`s transitively from the insertion table structure hint
- Add `columns_identical_across_versions` for faster `FINAL` queries
- Docs
- C++ not yet supported