polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Numeric operations on list with `pl.Decimal` inner types not possible
- Add `lf.estimated_size_if_collected()` for lazy frames
- A `SchemaError` (failed to materialize unknown type) occurred while using streaming engines
- Unexplained memory explosion when joining tables with structs.
- Optimize concatting subsets of a same LazyFrame
- Casting from integer to Categorical can be dangerous
- write_parquet and sink_parquet delete existing file if locked
- Add `Expr.is_sorted`
- Vortex support
- depr: Rename aggregate_function to agg_function
- Docs
- Rust not yet supported