averyqi-db commented on PR #48127:
URL: https://github.com/apache/spark/pull/48127#issuecomment-2381069022

   @cloud-fan it turns out Analyzer are using different validatePlanChanges 
implementation only call validateExprIdUniqueness. And this 
validateSchemaOutput is only used by Optimizer. I think this pr align with our 
discussion. We'll slack the constraints for optimizer and maintain Analyzer's 
check. In this case, can we merge the pr?


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