clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Query type is ExceptionBeforeStart but memory_usage > 0 with multiple threads
- Add ARM SVE detection and SVE dispatch infrastructure and SVE-optimized paths for ColumnVector filter, unary arithmetic, and findExtreme
- `NOT NULL` silently ignored in Replicated database when `data_type_default_nullable=1`
- `dictGetOrDefault` does not short-circuit evaluation of `default` argument
- [CI crash] Failure during query plan building for table expression
- ClickHouse does not close HTTP connection to jdbc-bridge on query cancellation
- Use Stringzilla for case insensitive string search
- Atomic storage resolving in analyzer
- [RFC] Add `!isCancelled()` check in while/for loops in `generate()` for some `ISource` derived classes
- Rewrite has(<constant array>, <expr>) to IN
- Docs
- C++ not yet supported