clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- query_plan_join_shard_by_pk_ranges doesnt work with FINAL
- A new system table, `changelog`
- Smarter Dictionary Updates and LRU-based Caching
- Add TTL DELETE stats: next selection time for each partition
- short-circuit in SELECT OR/AND clause
- MongoDB: support DateTime64 in WHERE clause
- ULID binary conversion functions
- `system.kafka_consumer.num_messages_read` probably doesn't align with `ProfileEvents::KafkaMessagesRead`
- ClickHouse crash when creating a dictionary on top of a view that uses a MongoDB table engine
- Arrow/ArrowStream format parsing should use ClickHouse allocator
- Docs
- C++ not yet supported