SELECT policy_type_code FROM policies GROUP BY policy_type_code HAVING count(*)  >  2
Find all the policy types that are used by more than 2 customers.
SELECT policy_type_code FROM policies GROUP BY policy_type_code HAVING count ( * ) > 2
select policy_type_code from policies group by policy_type_code having count ( * ) > value
Find all the policy types that are used by more than 2 customers .