universalmind303 commented on issue #8568:
URL: 
https://github.com/apache/arrow-datafusion/issues/8568#issuecomment-1866983394

   I'm also curious.
   
   Are there plans to ever allow udfs to support return types based off the 
input **value** instead of the **type**? I know there is currently special 
handling for `arrow_cast` because of this limitation. 


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