clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Backport #96172 to 25.12: Fix query condition cache hash collision for CTE folded constants
- DESCRIBE Parquet from a URL is slow
- Selections from Nessie catalog tables do not work
- Logical error: Can't determine table for parallel replicas (STID: None)
- Parser memory CI check
- docs(udf): Document stderr handling behavior
- Allow materialize to modify past values
- ClickHouse 26.1.1.912 Iceberg Table Query Timeout - Severe Performance Issues with 80,000+ Files
- Cannot remove outdated data parts
- Keep the original prefixes in S3Queue after_processing = 'move'
- Docs
- C++ not yet supported