clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Release pull request for branch 26.9
- Expose Iceberg manifest statistics to the query optimizer
- Iceberg `uuid` bounds decoded raw: min/max pruning drops rows that exist
- Fragment clone unguarded against `DelayedCreatingSetsStep`: NOT_IMPLEMENTED on JOIN+IN
- Shippable-set check is one level deep: a nested `IN` set escapes it and breaks serialization
- `Build profile diff` fails fleet-wide with `No connection to LogCluster`
- Add test: JSON 1 GiB per-value size limit: rejection side has zero coverage
- INSERT ... SELECT FROM url()/s3() with parallel replicas inserts the data once per replica (since 26.6)
- Try to drain a socket and return it to pool instead of closing
- Fix `INSERT ... SELECT FROM url()`/`s3()` with parallel replicas inserting the data once per replica
- Docs
- C++ not yet supported