Example: Using Parentheses to Customize Precedence - Teradata Vantage

To override precedence, use parentheses. Operations in parentheses are performed first.

For example, consider the following form:

   ( ( SELECT statement_1 
       UNION 
       SELECT statement_2 )
   EXCEPT
     ( SELECT statement_3 
       UNION 
       SELECT statement_4 )
   )
   EXCEPT 
   SELECT statement_5 
   INTERSECT 
   SELECT statement_6;