polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Raise a clear error for multiple iterable positional expressions in select/with_columns/agg
- `scan_iceberg`: Support incremental scans
- MemoryLeak in conjunction with SqlAlchemy when rows are not consumed with .all()
- fix(python): default `show_graph` physical plan to the streaming engine
- feat(python): Support incremental append Iceberg scans
- fix: Make Schema.to_arrow default compat level match DataFrame.to_arrow
- Add `seek(0)` hint to `BufferIO()` read errors in 2.0
- unique() peak RSS is ~2× a dup-only rewrite when cardinality ≈ n_rows
- `LazyFrame.profile()` is not in removed-attribute map in 2.0
- `LazyFrame`/`Expr` still only warn for renamed parameters `DataFrame` hard-removed in 2.0
- Docs
- Rust not yet supported