polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `map_elements` hangs when df has column of Arrow `string` type
- Allow automatic downcasting of Data Types in read_parquet
- `pl.Datatime("ns")` is copied when compared to `datetime.dateime`
- refactor: Turn `Expr.append` into DSL `Expr::Function(Append)`
- Support writing down statistics for a subset of columns in write_parquet
- `Config.set_binary_format`
- Column type of `scan_parquet` `include_file_paths`.
- Feature request: Add `collect()` to `DataFrame`
- Re-work API for `list.to_struct()`
- Panic when concatenating incompatible schemas in streaming engine
- Docs
- Rust not yet supported