tgravescs commented on issue #27233: [SPARK-29701][SQL] Correct behaviours of group analytical queries when empty input given URL: https://github.com/apache/spark/pull/27233#issuecomment-577720768 thanks for pointing out the SQL standard, I guess it is a correctness issue, but to me it means we aren't fully SQL compliant there and I think that has been true since the beginning of spark sql (correct me if I'm wrong as that would change things), so it seems like we wouldn't need to back port to 2.4.5 in my opinion.
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