Find the name of customers who have both saving and checking account types.
SELECT cust_name FROM customer WHERE acc_type  =  'saving' INTERSECT SELECT cust_name FROM customer WHERE acc_type  =  'checking'
SELECT cust_name FROM customer WHERE acc_type  =  'saving' INTERSECT SELECT cust_name FROM customer WHERE acc_type  =  'checking'
[{'Nenhum': 'Nenhum resultado encontrado'}]