clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Materialized View syntax documentation should indicate optional destination columns
- clickhouse-client: Use ssh agent for ssh key authentication
- Performance becomes worse for queries with LIMIT clause after #64607
- Cannot read Iceberg table: positional and equality deletes are not supported
- JSONExtract does not support leading zeros
- create a setting to not send an empty row block to the URL table when MV filters out all rows
- clickhouse server is normal，but distributed table left too many bin files not cleaned
- Then recloning the lost replica - try to map the local parts with cloned replica by block numbers and checksums (not only by the full name)
- Truncate column name in pretty format
- [ClickHouse-57381]Implement MemoryCredits profile event to track memory usage over time.
- Docs
- C++ not yet supported