polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Run then() and otherwise() expressions depending on result of when()
- exponentially weighted moving sum (ewms)
- Allow natural sorting
- `merge_sorted` on expr or multiple columns
- `sink_parquet_async()`
- lack of documentation on what delta_table_options/pyarrow_options can be in scan_delta()
- API enhancement needed to facilitate Oracle sql's hierarchical query
- Expose `.list.offsets()`
- Make numpy arrays immutable after passing it as zero-copy to Polars
- Harmonize functions to obtain rows, columns, and scalars
- Docs
- Rust not yet supported