Question: Can you tell me which customers placed orders between 2009-01-01 and 2010-0101? | do you want the id or the name of the customer? | The names
SQL: 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"