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(python): Clean formatting of missing columns in `match_to_schema` error message
- `fill_null(value)` should trigger error if `value` is of incompatible dtype
- `map_batches` with predicate_pushdown=False causes a PanicException
- infer `use_fabric_endpoint` based on URI containing "dfs.fabric.microsoft.com"
- Too narrow error trapping for `sort`
- Store row count in custom metadata key in IPC footer
- The order of the categories after `pl.Expr.cut` and `pl.Expr.qcut` does not match the order of the labels
- Add support for arrow:json type in scan_parquet
- RFC: Allow to obtain file metadata from `sink_parquet`
- RFC: Allow to provide file size hints to `scan_parquet`
- Docs
- Rust not yet supported