clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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Help out
- Issues
- Dictionary-based tokenization
- Parse `<valid_until>` from `users.xml`
- Support tuple lexicographic comparison for index analysis
- Prune non-output left columns when a join spill threshold is set
- Restore O(1) reserve in MergeSorter::mergeBatchImpl (fix ORDER BY perf regression)
- Avoid per-row heap allocations in blocked Myers edit distance
- Array subscript operator should accept array of integers as an index
- Dynamic access to JSON properties
- Add ORC metadata cache
- Continuation of #101618: FileCache use RocksDB metadata index
- Docs
- C++ not yet supported