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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/08/24 19:41:51 UTC

[GitHub] [arrow] andygrove commented on pull request #8032: ARROW-9836: [Rust][DataFusion] Improve API for usage of UDFs

andygrove commented on pull request #8032:
URL: https://github.com/apache/arrow/pull/8032#issuecomment-679327189


   For built-in functions like `sqrt` I would expect DataFusion to provide convenience functions to create an expression, like we do with `col` and the aggregate functions. I assume we could also do that with the design proposed here?
   
   For example, I would like to be able to write:
   
   ```rust
   df.select(vec![col("foo"), sqrt(col("bar"))])?
   ```


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