What are the names of customers who have taken out more than one loan?
SELECT T1.cust_name FROM customer AS T1 JOIN loan AS T2 ON T1.cust_id  =  T2.cust_id GROUP BY T1.cust_name HAVING count(*)  >  1
SELECT T1.cust_name FROM customer AS T1 JOIN loan AS T2 ON T1.cust_id  =  T2.cust_id GROUP BY T1.cust_name HAVING count(*)  >  1
[{'cust_name': 'Mary'}]