Example: Select Statement - Advanced SQL Engine - Teradata Database

Consider the following query:

   SELECT statement_1 
   UNION
   SELECT statement_2 
   EXCEPT 
   SELECT statement_3 
   INTERSECT 
   SELECT statement_4;

The operations are performed in the following order:

1. Intersect the results of statement_3 and statement_4.
2. Union the results of statement_1 and statement_2.
3. Subtract the intersected rows from the union.