polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- read_json unable to parse json list of lists, and doesn't respect documented schema arguments
- docs specify outer join will change default coalesce behaviour, but in python I get additional warnings for left join changing behavior
- Improve error messaging when wrong using a wrong schema/dtype
- Add conversion to binary
- docs(python): Add description and example of what happens when ignore_nulls=True on pl.concat_str
- `to_numpy()` weird behaviour with `map_elements` and `pl.List` polars type
- Increase the verbosity of Schema and Catalog/DB input arguments to the write_database function.
- Add to `.eq_missing()` a comment about what happens in the case of `Null.eq_missing(Number)`
- Add `df1.eq_missing(df2)` function
- pl.DataFrame.corr(method = "spearman")
- Docs
- Rust not yet supported