polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Confusing error message when reading hive partitioned dataset with bad partitions
- fix(python): Keep deduplicated names unique when the suffix is already taken
- Parquet metadata pruning is disabled for scans with a column mapping (Iceberg)
- key columns in `group_by(a).having()` should be referable as scalars
- feat: Recognize List evaluation over scalar values
- feat: Recognize unique over scalar Lists
- feat: Recognize unique over scalar Lists
- read_ndjson / scan_ndjson silently drop a key first seen past infer_schema_length, while read_json raises on the same records
- docs: Expand on expression plugins and add section on using arrow extension types
- Add `pl.Series.show`
- Docs
- Rust not yet supported