Database: department_store
Question: Return the name, phone number and email address for the customer with the most orders.
SQL:
SELECT T1.customer_name ,  T1.customer_phone ,  T1.customer_email FROM customers AS T1 JOIN customer_orders AS T2 ON T1.customer_id  =  T2.customer_id GROUP BY T2.customer_id ORDER BY count(*) DESC LIMIT 1