polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- refactor(python): Move/genericize `_balanced_reduce` to Python utils
- feat(rust): Remove and replace pyarrow predicate `eval` usage
- `date_range` not accepting expressions as `start`/`end`
- `write_avro` corrupts list[str] values when sliced DataFrames are written to multiple Avro files
- fix: handle empty order_by in over expression
- sink_delta panics on null Struct values (arrow-data assertion failure)
- `scan_parquet().filter().select()` panics on a parquet file, while equivalent `select().filter()` works
- feat: Accept list of booleans for descending/nulls_last in `Expr.over()`
- fix: Apply `strict` parameter in `from_{dicts,rows}`
- docs: Add link to concepts in index.md
- Docs
- Rust not yet supported