Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE customer (cust_name VARCHAR, acc_type VARCHAR)
### Question:
Find the name of customers who have both saving and checking account types.
### Answer:
SELECT cust_name FROM customer WHERE acc_type = 'saving' INTERSECT SELECT cust_name FROM customer WHERE acc_type = 'checking'