T-SQL: Comparing Two Tables - Records that don't exist in second table

Question

If UNION ALL is an addition in T-SQL. What is the equivalent of subtraction?

For example, if I have a table PEOPLE and a table

Answer 1

Instead of using UNION, use EXCEPT, ( or INTERSECT to get only records in both ) as described in

msdn EXCEPT Link for Sql2k8

msdn EXCEPT Link for Sql2k5