Can you show me the policy ids, customer ids and policy type codes of all policies?
select policy_id,customer_id,policy_type_code from policies
Can you list the policy type codes of all the policies used?
select policy_type_code from policies
Which type of policy is most frequently used? Can you give me the policy type code?
select policy_type_code from policies group by policy_type_code order by count ( * ) desc limit 1