polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- [FEA/Discussion]: allow specification of default engine via config options
- DataFrame.write_parquet doesn't use RLE_DICTIONARY encoding for nested columns
- List/Array: `sum` operation not supported
- `ComputeError` when reading a CSV with [square brackets] in file path
- pl.concat_list(pl.col("struct_of_structs")) out of memory and crashes
- Can not utilize more than one CPU core with `sink_parquet()`
- Option to disable schema inferring while using `json_normalize()`
- Option to automatically set column prefix when using `unnest()`
- Option for `json_normalize()` to flatten a JSON recursively
- Rounding error for `round_sig_figs` on `Float64`
- Docs
- Rust not yet supported