Mysql的总价格，金额，以及不同的（产品）

Question

我有以下MySQL表：

product_id selling_price 
10   200 
10   200 
11   100 
11   100 
13   300 

我怎样才能返回类似下面

product_id total total_selling_price 
10   2  400 
11   2  200 
13   1  300 

Answer 1

SELECT product_ID, 
     COUNT(*) totalCount, 
     SUM(selling_price) total_selling_price 
FROM TableName 
GROUP BY product_ID 

• SQLFiddle Demo
• List of GROUP BY (Aggregate) Functions

输出

╔════════════╦════════════╦═════════════════════╗ 
║ PRODUCT_ID ║ TOTALCOUNT ║ TOTAL_SELLING_PRICE ║ 
╠════════════╬════════════╬═════════════════════╣ 
║   10 ║   2 ║     400 ║ 
║   11 ║   2 ║     200 ║ 
║   13 ║   1 ║     300 ║ 
╚════════════╩════════════╩═════════════════════╝ 

Answer 2

你需要​​。

试试这个。

select product_id, count(product_id), sum(selling_price) 
from  tablename 
group by product_id; 

Answer 3

赌它一把，而不是本地测试

SELECT product_id, 
     COUNT(product_id), 
     SUM(Amount) 
FROM yourTable 
GROUP BY product_id