polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- pl.len() high memory usage
- Difference in line end detecting between polars and pandas in rigged CSV
- Big picture on null-behavior / Add a tracking issue for nulls in aggregations
- interpolate_by fails when null is located at beginning or end of dataframe
- `reduce` / `fold` from right to left
- Incorrect schema for parquet read with datetime[us] columns
- List arithmetic with structs
- MAX(*) with column_name does not aggregate rows
- Ability to compare datetime with TZ to datetime
- group_by_dynamic unexpected window start
- Docs
- Rust not yet supported