polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Support reading hdf5 as IO plugin.
- Missed optimization: transform multi-attribute equality joins into filter + single-attribute join
- Can't load JSON file > 4GB in size
- Return Dataframe::describe to Rust
- No `ComputeError` raised for too high microseconds in `pl.time`/`pl.datetime`
- [PyCapsule Interface] Exporting Categorical, Enum or Decimal type stream in wrong way
- Using a dict in `schema` parameter in LazyFrame constructor implicitly sets expected row order
- set_ascii_tables=True outputs non-ASCII characters
- Can't sort dataframe by multiple columns if any sort column is list or array
- ppc64cle installer on conda-forge
- Docs
- Rust not yet supported