karuppayya commented on issue #23696: [SPARK-26781][SQL]Avoid additional shuffle when the data is already partitioned on the same key in previous stage URL: https://github.com/apache/spark/pull/23696#issuecomment-459650123 Changing the behavior of `semanticEquals` breaks logical plan creation. Reverted the change in `semanticEquals` and fix by adding a new method `resolveEqual` whch is overridden only in `AttributeReference`
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