bhanreddy1973 commented on PR #19606:
URL: https://github.com/apache/datafusion/pull/19606#issuecomment-3705017374

   Hi @Jefffrey, thanks for the review!
   
   I read the comment on #19155 but want to make sure I understand correctly.
   
   Looking at other Spark functions in datafusion-spark (sha1, like, length, 
ilike), they all use:
   let nullable = args.arg_fields.iter().any(|f| f.is_nullable());Should 
`make_interval` follow this same pattern? 
   
   My concern was that `make_interval` can return NULL on arithmetic overflow 
(e.g., `year * 12 + month` overflows), even when inputs are non-null. Should 
overflow:
   1. Make the output always nullable (current implementation)
   2. Only make output nullable if inputs are nullable (standard pattern)
   3. Depend on a `failOnError` / ANSI mode config?
   
   Happy to update the implementation once I understand the expected behavior. 
Thanks!


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