What are the total order quantities of photo products?
SELECT sum(T1.Order_Quantity) FROM ORDER_ITEMS AS T1 JOIN Products AS T2 ON T1.Product_ID  =  T2.Product_ID WHERE T2.Product_Name  =  "photo"
SELECT sum(T1.Order_Quantity) FROM ORDER_ITEMS AS T1 JOIN Products AS T2 ON T1.Product_ID  =  T2.Product_ID WHERE T2.Product_Name  =  "photo"
[{'sum(T1.Order_Quantity)': 3}]