polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- fix(rust): Handle Unknown numeric types with Boolean in supertype resolution
- `pl.from_dicts(..., schema=has_enums, strict=True)` silently nulls invalid Enum values
- Vertical pl.concat overly strict with different column orders compared to pl.scan_parquet
- fix(python): Correct type hint for `function` parameter in `DataFrame.map_columns`
- Support `MERGE` and `INSERT INTO ... ON CONFLICT` for Polars SQL
- Support datetime ceiling and flooring
- Polars cannot read column of numbers with trailing zeroes (.000) as ints even when specified in schema override
- 2-column dataframe to_dict
- `.is_in` breaking change without any warning
- `dtype` for `to_dummies()` and using `bool` as default
- Docs
- Rust not yet supported