polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- fix: Correct schema for `Float16`/`Float32` divided by `Decimal`
- SQL: unknown or alias-hidden names are accepted in correlated subquery
- perf: Remove repeated keys from by's
- fix: Preserve order of sliced maintain-order group_by
- fix: Preserve fractional seconds when casting `Time` to `String`
- perf: Let the scan pipeline window follow the in-flight byte budget
- chore: Rename polars_cloud package
- fix: Support reading `Time` hive partition columns
- perf: Let the cloud read rate limiter follow demand
- `DataFrame.join` on a sorted float key drops NaN matches (sorted-merge fast path compares with IEEE `==`)
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- Rust not yet supported