pengbo commented on issue #24567: [SPARK-27638][SQL]: date format 'yyyy-M-dd' string comparison not handled properly URL: https://github.com/apache/spark/pull/24567#issuecomment-491130177 > > Some corner cases like date_col > 'invalid_date_string' will always return false in this solution seems to be reasonable > > It will be super weird if `date_col > 'invalid_date_string'`, `date_col < 'invalid_date_string'` and `date_col = 'invalid_date_string'` all return false. I think returning null is more reasonable. Sorry I didn't clarify clearly. It will return null, I meant this comparison will always be false.
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