需要一個MySQL查詢

Question

我有試圖在下表中結合了MySQL查詢幫助：

TABLE: orders_products 
products_id 
orders_id 
products_quantity 
products_price 

TABLE: products 
products_id 
products_model 

我想返回銷售總數的查詢，對每個PRODUCT_ID銷售總額，以及orders_products表中每個產品的product_model。這是我想出來的迄今最好的，它只是增加了什麼東西都往同一桶：

SELECT 
    SUM(op.products_quantity) AS num_sold 
    ,SUM(op.final_price * op.products_quantity) 
    ,p.products_model 
FROM orders_products AS op 
JOIN products AS p 
WHERE p.products_id = op.products_id 

Answer 1

添加group by p.products_id您where後，你會好

Answer 2

您需要使用GROUP BY 。檢查此鏈接：http://www.w3schools.com/sql/sql_groupby.asp

Answer 3

SELECT p.products_id, p.products_model, 
    SUM(op.products_quantity) AS num_sold 
    ,SUM(op.final_price * op.products_quantity) AS sales 
FROM orders_products AS op 
JOIN products AS p 
WHERE p.products_id = op.products_id 
GROUP BY p.products_id, p.products_model