แจ้งชื่อลูกค้าที่สั่งซื้อระหว่าง 01-01-2552 ถึง 01-01-2553 ไม่จำเป็นต้องใช้ตารางทั้งหมด
Give me the names of customers who have placed orders between 2009-01-01 and 2010-01-01.It is not neccessary to use all the tables.
 orders:  (customer_id [ VARCHAR ] date_order_placed [ VARCHAR) ]
SELECT T1.customer_name FROM customers AS T1 JOIN orders AS T2 ON T1.customer_id = T2.customer_id WHERE T2.date_order_placed >= "2009-01-01" AND T2.date_order_placed <= "2010-01-01"