好吧,我有一個表3表(訂單,ORDER_DETAILS,產品)MySQL查詢的所有月份,以獲得特定項目的數據
訂單
id | order_date
1 | March-01-13
2 | March-02-13
3 | April-01-13
4 | May-01-13
5 | June-01-13
and so on.....
ORDER_DETAILS
id | order_id | product_id | total_price
1 1 1 100 /*mouse*/
2 1 3 200 /*monitor*/
3 2 2 50 /*keyboar*/
4 2 3 200 /*monitor*/
and so on....
產品
id | title
1 mouse
2 keyboard
3 monitor
and so on...
這裏是我的SQL查詢,給予意想不到的輸出
SELECT title, SUM(total_price) as total_price, orders.order_date as date
FROM products
LEFT JOIN order_details
ON order_details.product_id=products.id
LEFT JOIN orders
ON orders.id=order_details.order_id
WHERE title='monitor' /*this is just a try, prod_id should be the one*/
GROUP BY MONTH(date)
ORDER BY total_price DESC LIMIT 10
我想是的product_id的所有月份的TOTAL_PRICE
期望輸出
title | total_price | date
monitor 400 March
謝謝。有用。那個月的每一天的「total_price」如何? – Emjey23