polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Opaque error message when calling dt accessor methods on string column
- `schema_overrides` argument of `read_excel` requires column to be present in all sheets
- Race conditions in file cache
- Should support reading and writing partitioned Iceberg files
- Add a thousands parameter to read_csv / scan_csv
- write_database does not recognize redshift connector
- Improve error message for: `SchemaError: failed to determine supertype of <Polars type> and object`
- Array (Fixed-size) columns cannot use NumPy / Numba ufuncs like scalar columns (broadcast & map_batches inconsistencies)
- Support WebGPU
- Invalid thrift error during remote write_parquet
- Docs
- Rust not yet supported