clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Consider changing deserializeBinarySSE to more general form
- It's possible to break invariant of equal sizes of arrays of `Nested` by `DEFAULT` value
- Variable substitution for named connections
- Prepared sets (use_index_for_in_with_subqueries) are not shared across expressions
- disable_partition_prunning, disable_[skip_]index_scan settings
- Index scan optimization for ASOF JOIN
- Subnormal Float64 value cannot be parsed as literal
- Higher I/O writes per second after TTL merges
- The user with only INSERT grant can still make infinite SELECT FROM system.numbers
- Parallel vertical merge
- Docs
- C++ not yet supported