polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `clip()` with lower bound > upper bound panicks, but only in dev profile
- Incorrect values when performing list arithmetic operations where the inner type is Float32 and sinking to parquet
- Support collections of expressions in `is_in`
- Add a complete Function to Handle Implicit Missing Values for Categorical Variables
- A column expression with multiple columns passed to 'over' causes a name duplication error
- Support `by`/`by_left`/`by_right` arguments in `join_where`
- `read_csv_batched` for cloud storage
- refactor(rust): Refactor compute kernels in polars-arrow to avoid using gather
- Use externally provided ressources (tokio runtime / rayon thread pool)
- ``.mode()`` returns inconsistent results
- Docs
- Rust not yet supported