alamb commented on issue #12338:
URL: https://github.com/apache/datafusion/issues/12338#issuecomment-2491402048

   > Should this be the default for all functions that handle strings now? 
Require they can accept Utf8View as input for all fields and produce Utf8View 
output ?
   
   I am not sure
   
   I think each function should produce Utf8 / Utf8View depending on what makes 
sense (Utf8 is more efficient if you have to rewrite all the strings anyways)
   
   Once string functions accept either Utf8/Utf8View which I think would avoid 
the chained casting you are describing


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