polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- business_day_count ignores broadcast holidays after leading null date values
- Don't buffer in multiplexer if lhs writes and rhs can directly execute.
- feat(rust): Allow for multiple `descending` and `nulls_last` for `order_by` in `over`
- feat: Optimize joins with redundant equi-join keys
- Remove `retries` argument from scan and read functions
- Remove `no_optimizations` argument from `LazyFrame.map_batches`
- Allow passing of empty list to filter method
- Streaming engine does not set sortedness flags for sorted join outputs
- Type of schema_overrides in read_csv not compatible with the implementation
- perf: Tighten redundant comparisons and propagate filter constraints
- Docs
- Rust not yet supported