clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Docs: Fix return-type documentation for `uniqTheta` set operations
- Cassandra dictionary source fails on `uuid` columns since 24.9: `Cannot parse input: expected 'eof' before: '\0'`
- Fix Hive partition with empty partition key
- Plan-based parallel replicas: keep filter fusion into `ARRAY JOIN` for steps that are not shipped
- Add SQL-managed query masking rules: `CREATE QUERY MASKING RULE`
- Use Rust `nightly-2026-11-02`
- Fix use-after-free of the Replicated database DDL worker
- Exclude trace processing from allocation sampling
- Use explicit vector accumulators in `isAllASCII`
- Fix memory-safety bugs in the self-extracting decompressor
- Docs
- C++ not yet supported