raihow commented on issue #25020: [SPARK-28220][SQL] Fix foldable join 
condition not pushed down when parent filter is wholly pushed down
URL: https://github.com/apache/spark/pull/25020#issuecomment-510195670
 
 
   > @raihow I don't understand your question, 'w2' is just a filter condition, 
why should it be in table1?
   
   
   
   > @raihow I don't understand your question, 'w2' is just a filter condition, 
why should it be in table1?
   
   ok, thanks maybe i think i probably know . 
   The  column r  is a new column add in table2 and that column is fill with 
'w1' right? 

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