mihaibudiu commented on PR #3706:
URL: https://github.com/apache/calcite/pull/3706#issuecomment-1969606855

   > pls also see https://issues.apache.org/jira/browse/CALCITE-5893 to support 
array_except/array_intersect. they also should reject NULL literals.
   > 
   > calcite spark:
   > 
   > // return null select array_contains(array[1, 2], null); // return null 
select array_except(array[1, 2, 3], null) // return null select 
array_intersect(array[1,2,3], null)
   > 
   > they should reject NULL.
   
   That's great, we should merge that PR if it solves the problem. I will try 
to review it.
   
   


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