polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Run constant folding bottom up instead of top down.
- fix: Error on mismatched length in zip node when input data has one row
- Constant folding replicates rules from the engine and leaves many gaps unimplemented
- perf: Add constant folding for more datetime ops
- NDJSON reader panics on Int8/Int16/UInt8/UInt16/Time/Duration schema types
- fix: Reject `String` operands before float arms in true division type resolution
- perf: Native gather for List arrays
- perf: Explode lists in group_by aggregations without a per-group apply
- fix(python): Raise on String operands in eager Series true division
- Unique after gather on 2-D array with null incorrect.
- Docs
- Rust not yet supported