polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `Categorical.sort()` is slower than the equivalent `String.sort()` since the 1.32 lexical rework
- docs(python): Direct filter users to semi joins
- `scan_csv` can fail if first row is too long
- fix: Prevent CSE from sharing scalar aggs in group_by()
- feat: Add `ntile` window function Expression
- docs(python): Make API sidebar fluid and user-resizable
- fix: Don't preserve sorted flag through non-monotonic `dt.date()`/`dt.truncate()`
- Schema inconsistent on `Decimal` arithmetic with integer
- Bug: `cum_sum` panics on Int64 overflow test_confirmed_bugswhile `sum()` and binary `+` wrap
- fix: Raise on missing struct fields when casting with strict=True
- Docs
- Rust not yet supported