polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Add `how="horizontal_extend"` to `pl.concat`, and deprecate `strict` parameter
- Optimization: use IEEE-754 total order `nan_count` to enable float `>=` row-group skipping
- docs: Clarify when-then-otherwise filtering
- PartitionBy in lazy streaming occasionally overwrites string data with null bytes
- feat: Add `descending` and `nulls_last` options to `merge_sorted` for both in memory and streaming engine
- Add a check that the input of `merge_sorted` is correctly sorted
- docs(python): Clarify read_csv use_pyarrow behavior
- Memory Bloat When Performing merge_sorted on the results of join_asof
- Store sorted state at the DataFrame level to allow multiple sort columns
- Add short-circuiting behavior to streaming engine reductions
- Docs
- Rust not yet supported