polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Iceberg: Outer NULLs are written as empty lists on columns with multiple nesting levels
- Output type mismatch in `when-then`
- fix(rust): Fix schema consistency for `Categorical` in when-then expressions
- User Guide still mentions group_by_rolling / example rolling missing
- Arithmetic on struct does not cast inner to supertype
- read_csv: ComputeError verbosity and full file dump on certain parsing errors
- Cannot compare Enum to Categorical?
- Partitioning + glob + scan + explain leads to crash
- Define per function signatures and materialization rules
- Polars str json decode fails on 1M char input length
- Docs
- Rust not yet supported