polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `object-store error` when using `scan_csv` and ManagedIdentityCredential
- feat: Allow nulls in interpolate_by
- polars.read_excel() by sheet_name with calamine causes arrow_to_pydf() allocating 1GB of memory
- Clarify that a `when-then-otherwise` expression filters at the end
- LazyFrame derived from a parquet file invokes map_elements UDF with duplicate, corrupt row
- Enhance `pl.date_range` with `periods` parameter and flexible start/end combinations
- rolling_std/var/cov/corr performance scales with window size, unlike rolling_sum/mean/min/max
- refactor(rust): Refactor `hist`
- Support execute_options parameters for SQLModel session connection on pl.read_database()
- Update documentation to require `pivot` feature-flag for unpivot
- Docs
- Rust not yet supported