[GitHub] [arrow-datafusion] yukkit commented on issue #2260: create_udf 0 parameter error

["yukkit (via GitHub)" <gi...@apache.org>]

yukkit commented on issue #2260:
URL: https://github.com/apache/arrow-datafusion/issues/2260#issuecomment-1527280989

   The reason is  ```let len: usize = match &args[0] {``` . 
   If your udf takes no arguments, you can return `ColumnarValue::Scalar` instead of `ColumnarValue::Array`.
   
   If there are no other problems, I think this issue can be closed.


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