clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Can't truncate partitioned S3 engine table
- Having trouble adding or changing Kafka topics.
- Due to #47138 it is not possible to generate Kafka Engine table with a schema similar to other Table
- RELOAD DICTIONARY ON CLUSTER by default in Replicated DB
- Connection to ClickHouse via port 9004 (MySQL protocol) from PowerBI is not working
- `date_trunc` working incorrectly with datetime arguments before the Unix timestamp
- Insert compressed protobufs or insert blocks with LZ4 compression
- Attaching part with chunk level higher than LEGACY_MAX_LEVEL doesn't throw any exception
- Allow POST instead of GET for url() select
- Performance inprovement - parse only requested columns in TSV/CSV and similar text formats without header
- Docs
- C++ not yet supported