polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- feat: Track original source in `IR::Scan`
- Add `UpdateGroups::WithUnitLen` variant for aggregation expressions
- feat: Add cs.remaining() selector
- Support inserting extra columns that do not appear in 1st file in scan_parquet
- Upcasting from integer to decimal with `scan_parquet`
- write_excel parameter column_totals - count on a Date column comes out as a date format instead of number
- qcut with include_breaks=True returns Categorical instead of Struct on empty Series
- Optimize `scan_ipc` record batch download when slicing
- fix(python): Assert missing_columns dtypes in `match_to_schema`
- Add number_cast option to ScanCastOptions
- Docs
- Rust not yet supported