polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- N-ary `merge_sorted` implementation
- Enable user to pass arguments to change behaviour of interactive plots
- Add list.remove()
- fix(plan): remove duplicate column in match_to_schema missing-columns error
- df.n_unique() to work on all columns by default
- Magic method for alias, column, field
- Concurrent `scan_parquet(...).collect()` on a file being rewritten triggers `slice::get_unchecked` UB in `polars-stream/.../row_group_data_fetch.rs:112`
- fix(python): Support numpy ufuncs on Array dtype Series
- Data corruption when reading with cloud IO in concurrent write scenario
- perf: `LazyFrame.pivot` on hive partition is slower that looping on each partition
- Docs
- Rust not yet supported