polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Put all the fastexcel parameters in pl.read_excel directly
- Cannot read the Time type of a Parquet file correctly
- Add a `validate: bool = False` argument to `df.set_sorted`
- Inconsistent `lit` vs `col` parsing of RHS string in `+` operation
- `map_groups` does not satisfy `return_dtype`, instead appears to be inferred from the data
- Add `nan_to_null` argument to `polars.from_numpy`
- Feature Request: `pl.DataFrame.set_sorted_per_group()` to mark grouped Time Series columns as sorted
- feat: Allow `join_nulls` in asof join
- Allow concat_str to replace NULL values with a given string
- Unexpected growth in memory for repeated joins
- Docs
- Rust not yet supported