clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add `user_files_policy` server setting for custom disks in user_files directory
- Add Praktika-based CreateRelease workflow and job
- Rewrite in Rust
- Do automatic partitions pruning for mutations when it's possible
- Use LIFO scheduling in ThreadPool to reduce memory fragmentation
- Enhance demo tests in advance of interview
- Implements SQL truth-value predicates `IS TRUE`, `IS FALSE`, `IS UNKNOWN` and their `IS NOT` variants. Closes ClickHouse/ClickHouse#99597.
- Enable throttling of lookups for YTsaurus dictionaries
- Automatically Optimize Queries on Time-Partitioned Tables
- Avoid exceptions when lifting ARRAY JOIN past throwing expressions
- Docs
- C++ not yet supported