polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Non-strict data frame creation
- Thousand separator automatically added to write-delta(pl.df)
- The output of `hive_partitioning=False` differs in `scan_ipc()` and `scan_parquet()`
- In `scan_parquet()` and `scan_ipc()` with multiple partitioning columns, `hive_schema` fails converting Float to String
- Cache Common Subgraph Evaluation in Lazy Mode
- Remove `json` support in `LazyFrame.serialize`
- Add Lateral Column Aliasing support for the SQL interface
- Possible memory leak on scanning csv and sinking to parquet
- No non-strict creation of literals
- write_parquet with partition_by silently overwrites existing files
- Docs
- Rust not yet supported