[GitHub] [arrow-datafusion] andygrove commented on issue #2330: [Question] how to add expr inline

[GitBox <gi...@apache.org>]

andygrove commented on issue #2330:
URL: https://github.com/apache/arrow-datafusion/issues/2330#issuecomment-1109238122

   I think we will need to introduce a new type of function to cover `inline` since it is not a scalar function.
   
   I don't have a good name for it yet but I think we need something like this?
   
   ``` rust
   pub type MultiColumnProducingFunctionImplementation =
       Arc<dyn Fn(&[ColumnarValue]) -> Result<Vec<ColumnarValue>> + Send + Sync>;
   ```


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