Order all the customer orders by the descending order date.
select * from customer_orders order by order_date desc
What is the most recent order?
select * from customer_orders order by order_date desc limit 1
Who made that order?
select t1.customer_name from customers as t1 join customer_orders as t2 on t1.customer_id = t2.customer_id order by t2.order_date desc limit 1