Database: e_commerce
Question: Which customers did not make any orders? List the first name, middle initial and last name.
SQL:
SELECT customer_first_name ,  customer_middle_initial ,  customer_last_name FROM Customers EXCEPT SELECT T1.customer_first_name ,  T1.customer_middle_initial ,  T1.customer_last_name FROM Customers AS T1 JOIN Orders AS T2 ON T1.customer_id  =  T2.customer_id