Database: customers_card_transactions
Question: What is the customer first, last name and id with least number of accounts.
SQL:
SELECT T2.customer_first_name ,  T2.customer_last_name ,  T1.customer_id FROM Accounts AS T1 JOIN Customers AS T2 ON T1.customer_id  =  T2.customer_id GROUP BY T1.customer_id ORDER BY count(*) ASC LIMIT 1