gatorsmile commented on issue #23315: [SPARK-26366][SQL] 
ReplaceExceptWithFilter should consider NULL as False
URL: https://github.com/apache/spark/pull/23315#issuecomment-447609587
 
 
   There is another bug in this rule. The condition of the right side must be 
deterministic; otherwise, the value appearance possibility will be changed in 
the final result of EXCEPT.

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