LinhongLiu commented on issue #26177: [SPARK-29520][SS] Fix checks of negative intervals URL: https://github.com/apache/spark/pull/26177#issuecomment-544216888 I'm neutral on this PR. But I have to remind that months, days and microseconds is designed to be 3 separated fields. It's simpler to just check `months >= 0 && days >= 0 && microseconds >= 0` and let user to choose their own combination to pass this constraint. If we make them convertible, things can be a bit more complex. I mean, you have to make some assumption to convert the fields and take care of them.
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