polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Option to normalize floats written to Parquet
- `.struct.unnest()` performance versus frame-level unnest
- Non-nullable list values export without outer mask
- docs: Expand streaming user guide with 6 real-world patterns
- fix(python): ADBC driver compatibility at `write_database()`
- Casting fails with untyped literal in horizontal aggregation
- pl.lit(datetime) fails with ComputeError after freezegun.freeze_time (since 1.37.0)
- Source of aws config and credentials files.
- refactor: Make projection- slicepushdown public
- `approximate_bytes_per_file` in `PartitionBy` does not go lower than ~100k rows unless `row_group_size` is set to a lower value
- Docs
- Rust not yet supported