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(*)  >  2
[{'Policy_Type_Code': 'Deputy'}, {'Policy_Type_Code': 'Jurisdiction'}, {'Policy_Type_Code': 'Uniformed'}]