yaooqinn opened a new pull request #27262: [SPARK-30551][SQL] Disable comparison for interval type URL: https://github.com/apache/spark/pull/27262 ### What changes were proposed in this pull request? As we are not going to follow ANSI to implement year-month and day-time interval types, it is weird to compare the year-month part to the day-time part for our current implementation of interval type now. Additionally, the current ordering logic comes from PostgreSQL where the implementation of the interval is messy. And we are not aiming PostgreSQL compliance at all. ### Why are the changes needed? make interval type more future-proofing ### Does this PR introduce any user-facing change? there are new in 3.0, so no ### How was this patch tested? <!-- If tests were added, say they were added here. Please make sure to add some test cases that check the changes thoroughly including negative and positive cases if possible. If it was tested in a way different from regular unit tests, please clarify how you tested step by step, ideally copy and paste-able, so that other reviewers can test and check, and descendants can verify in the future. If tests were not added, please describe why they were not added and/or why it was difficult to add. --> existing uts shall work
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