polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Empty chunk error when last line has comment_prefix and no trailing newline
- `Series.is_sorted()` returns `True` for nulls-last series when `nulls_last=False`
- fix: Validate null placement in `is_sorted()` fast path
- bug: scan_table fails for Unity Catalog tables with encoded partition paths (double-encoding/404)
- `parquet` feature pulls in `reqwest`/`object_store`/`tokio` unexpectedly
- fix: AnonymousFunction can qualify as SQL aggregator
- `scan_csv` on large amounts of compressed files hangs
- Inconsistent behaviour between Expr.str.json_decode and read_ndjson when reading floats as integers
- Predicate pushdown results in `ShapeError`
- refactor: Simplify pyarrow scan and process in batches
- Docs
- Rust not yet supported