adriangb commented on issue #15780:
URL: https://github.com/apache/datafusion/issues/15780#issuecomment-2889172347

   @alamb there is no error AFAIK. It currently works, but it works by casting 
the data to match the types of the table. The point I’m making is that we could 
instead cast the expression to match the type of the file, possibly saving a 
lot of copying / blowing up dictionaries.


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