polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `partition_by` not working in Rust API when compiled with wasm target
- Support `pow` operation for list dtype
- Support for slice and predicate pushdown (filter().head() is slow)
- `group_by().agg()` may cause panic when the number of rows in the original data frame is 15 or more
- Inconsistent .unique() result for pl.Enum type depending on input data format
- Example of how to overwrite a dtype with the Rust CSV reader
- `attempt to multiply with overflow` when using `IpcStreamReader` from a Cursor
- The compiler cannot find `mean_horizontal`, `max_horizontal`, or `min_horizontal`
- pl.scan_ipc throws argument 'cloud_options': 'dict' object cannot be converted to 'Sequence'
- Combine schema and hive_schema in one param for parquet scan
- Docs
- Rust not yet supported