polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Parquet row group filter pushdown not working as expected
- Expand metadata to be able to track multi-column and group sort status + add lazyframe method to check whether a group or multicolumns are sorted
- from_dicts changes value when passing rows with nested dictionaries
- Add ability to offload dataframe storage to disk when running out of memory
- Rust docs don't note when the `parquet` feature is needed
- Error on calling polars.Expr.meta.tree_format with expressions from list of columns
- Add argument `value_drop_null` to `melt()`
- `melt()`: extract multiple variables from name
- get histogram from rust polars (not python API)
- Many operators do not work with dtype null
- Docs
- Rust not yet supported