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

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

Ted-Jiang commented on issue #2330:
URL: https://github.com/apache/arrow-datafusion/issues/2330#issuecomment-1109315229

   > 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>;
   > ```
   
   Thanks ❤️ @andygrove, I agree we need func return `Vec<ColumnarValue` i will working on this


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