clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Sharded Aggregation for high cardinality data
- perf: Prune parts for `ORDER BY LIMIT` queries on partitioned tables when `optimize_read_in_order=1`
- Use blocked Bloom filter for join runtime filters
- Propagate case sensitivity from parent disk to cache wrapper
- Remove unused rows from ColumnReplicated during function execution
- Quota by normalized query hash
- Support Interval data types in Arrow Format
- Interserver Mode Entered Before Secret Hash Verified
- Support Virtual Columns in MergeTree Sorting Key
- Replace SANITIZE_COVERAGE with LLVM source-based coverage for per-test coverage collection
- Docs
- C++ not yet supported