如何從訂購表中獲得最受歡迎的產品？

Question

我有我的訂單表這樣的

Id | Order_id | item_id | restaurant_id | price 
-------------------------------------------------- 
    1 | 1  | 1  | 2   | 200 
--------------------------------------------------- 
    2 | 2   | 1  | 2    | 200 
--------------------------------------------------- 
    3 | 3  | 2  | 2    | 400 

我怎樣才能從訂單表按升序熱門項目，其中restaurant_id是2 我想是這些 受歡迎的項目

1 
2 

我嘗試，但我只得到總數，我卡在那裏

SELECT COUNT(item_id) FROM `item_orders` WHERE restaurant_id = 1 

Answer 1

這樣，你得到的每個項目，並責令其按計數

SELECT item_id, COUNT(*) 
FROM `item_orders` 
WHERE restaurant_id = 1 
GROUP BY item_id 
ORDER BY COUNT(*) DESC 

Answer 2

試試這個;

select * from 
(SELECT COUNT(item_id) as count FROM `item_orders` 
WHERE restaurant_id = 1) as T 
order by `count` asc