Database: insurance_policies
Question: Which customer had at least 2 policies but did not file any claims? List the customer details and id.
SQL:
SELECT T1.customer_details ,  T1.customer_id FROM Customers AS T1 JOIN Customer_Policies AS T2 ON T1.Customer_id  =  T2.customer_id GROUP BY T1.customer_id HAVING count(*)  >=  2 EXCEPT SELECT T1.customer_details ,  T1.customer_id FROM Customers AS T1 JOIN Customer_Policies AS T2 ON T1.Customer_id  =  T2.customer_id JOIN Claims AS T3 ON T2.policy_id  =  T3.policy_id