jchen5 commented on PR #40865:
URL: https://github.com/apache/spark/pull/40865#issuecomment-1517695970

   > Depends on what is correct results of select *, (select any_value(false) 
as result from t1 where t0.a = t1.c) from t0) ?
   
   Yes, this should return null on empty data.
   
   I will try to find another test case to check the potential issue I 
mentioned. Maybe something like `select *, (select false as result from t1 
where t0.a = t1.c) from t0 limit 1)`(correct answer for that is also null).


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