polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Inconsistent numeric column detection in lazy DataFrame after transformation
- Provide read_avro_batched API
- scan_parquet is slow to scan over parquet dataset with many rows
- Add `pl.read_lines` and `pl.scan_lines` input methods
- `read_excel` reads big numbers incorrectly when they use a cell reference
- dtype mismatch when converting Struct column to DataFrame from dictionary
- rechunk leads to slower performance in dt.add_business_days
- Functionality to cache metadata or provide existing metadata to polars
- pl.repeat does not respect leftmost-argument naming rule
- error[E0599]: no method named `raw_table_mut` found for struct `hashbrown::HashMap` in the current scope
- Docs
- Rust not yet supported