advitrocks9 commented on PR #24827:
URL: https://github.com/apache/datafusion/pull/24827#issuecomment-5722941733

   Both are fixed.
   
   For nullability I overrode `return_field_from_args` since the default marks 
the field nullable. I also pinned the schema with 
`datafusion.explain.show_schema` instead of `EXPLAIN VERBOSE` so the optimizer 
pass list does not get copied into the file.
   
   For signed zero this was not specific to `equal_null`. `[0.0] = [-0.0]` was 
also false on main. I fixed it in `compare_op_for_nested` by making 
`normalize_float_zero` recurse into nested children.


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