polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- 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
- Arrow table import not setting `fast_explode` on dataframe
- chore(python): Bump the documentation group across 1 directory with 5 updates
- Speed up datetime parsing from NDJSON
- fix: Retain CSV datetime parser state across fallback formats
- Support vertical sum aggregation for fixed-size Array columns
- perf: Parallelize narrow single-chunk execution
- ComputeError reading Parquet files with VARIANT LogicalType (field_id=16) entire file unreadable
- Docs
- Rust not yet supported