clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Skip empty configuration files in `config.d` instead of failing to load the configuration
- Do not answer min/max from statistics of a column a part stores with another type
- Do not let Iceberg min/max pruning drop rows that hold a NaN
- Table function cache key ignores aliases: alias-only `view` pairs collide
- Support prewhere in delta lake
- `cluster_function_wait_for_replica_ms` >= ~9.2e12 overflows `now() + wait` (UB)
- GRANT TABLE ENGINE rejects database engines required by CREATE DATABASE
- Fix DDSketch accuracy below 1 and lost counts in `changeMapping`
- Fix Iceberg min/max pruning dropping rows for decimal values beyond the column precision
- Release pull request for branch 26.10
- Docs
- C++ not yet supported