clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Function extractAllGroups/extractAllGroupsVertical Can accept non-const String ?
- Execute DDL statements without replicating them, on a Replicated database
- Backups size in system.backups and ProfileEvents
- Support group_by_use_nulls in TOTALS
- bitmapContains with distributed table.
- Overly cautious test in Install.cpp prevents setcap execution on CentOS 7
- system.dictionaries reports incorrect bytes_allocated for Array attributes
- How can quickly restore atomic databases/tables if metadata disk broken.
- Join Engine slower than MergeTree engine for high number of key lookups
- Add JetStream persistence support for NATS
- Docs
- C++ not yet supported