clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Check table failed if a JSON column has too complex structure
- Idea: diagnose tests failed due to randomized settings.
- Enable query profiler under sanitizers
- Implement CREATE HANDLER query
- Add lazy posting list evaluation mode for text index
- BloomFilter: loop fission, optimized k=3 code path
- Iceberg: propagate table UUID from REST catalog to avoid metadata cac…
- Extend `InverseDictionaryLookupPass` to support `IN` and `notIn` operators for dictionary lookups
- Add assertions in IColumn::mutate to verify deep unique ownership of sub-columns
- Implement direct SELECT reading and kafka_commit_on_select for Kafka2 engine
- Docs
- C++ not yet supported