joseph-isaacs commented on issue #12819:
URL: https://github.com/apache/datafusion/issues/12819#issuecomment-2402421787
Hey, thanks for your ideas.
This mean that the `ExprSimplifier` would change the return type of the pack
UDF.
Say for instance the return (before simplification) is `("a", int64
nullable), ...` after would be `("a", int64 non nullable), ...`. This would
mean that the simplification is required to run for the UDF to behave correctly.
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