clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Connections from PostgreSQL connection pools are not reused within a single query or other concurrent executing queries
- Custom disk setting (`SETTINGS disk = disk(...)`) breaks alters on the table
- alter table xxx on cluster xxx update = null where isNaN(xxx) slow and 100% cpu use
- Projection doesn't work when using ORDER BY in the query
- Add CBOR file format
- Data visualization output format
- Add amazon ion format
- Try Radix-Hash-Join
- Joins use all partitions instead of filtering by partition key
- 24.3 url function takes longer than expected to respond when configured with an incompatible cipher
- Docs
- C++ not yet supported