Example: Merging Lists of Values - Analytics Database - Teradata Vantage

In addition, the UNION operator is useful if you must merge lists of values taken from two or more tables.

For example, if departments 500 and 600 had their own Employee tables, the following query could be used to select data from two different tables and merge that data into a single list:

   SELECT Name, DeptNo 
   FROM Employee_dept_500 
   UNION 
   SELECT Name, DeptNo 
   FROM Employee_dept_600 ;