polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Memory leak when reading CSV files in parallel using rayon
- Tracking Issue for dealing with Unknown datatype
- cell based data types with read_excel
- `pl.Expr.meta.has_multiple_outputs()` is broken on main
- Provide some sort of callback for `LazyFrame` to handle errors when collecting?
- Decimal zeroes are stripped when reading float values as string in read_json
- `scan_delta` returns incorrect datetime unit (us instead of ns) compared to the specified schema
- Reading parquet from another minio, error message: permission issue
- `diff` does not always work as "expected" for `pl.UInt64` columns
- Feature Request: join_rolling– Ergonomic & Performant Time-Series Windowed Join
- Docs
- Rust not yet supported