clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Direct `Map` subcolumn reads (`m.keys` / `m.values`) from Parquet silently return default values
- Minmax index incorrectly prunes fractional DateTime64 values for integer bounds
- Do not resolve parallel-replicas callbacks from the context when cloning a read
- Do not throw when comparing an Enum column with a non-member string literal
- Fix wrong statistics part pruning for negated float predicates with NaN
- Cardinality of nested arrays
- Parameters with Newlines fail to parse
- Protobuf Output Converts "" and 0 to NULL for Nullable columns
- Parse PromQL octal numeric literals
- [WIP] Part manifest prep - extract storage components
- Docs
- C++ not yet supported