Groupby Sum in mySQL？

Question

我的表格如下：

DeviceNumber  PayWay  Money

   000001       A       1
   000002       B       2
   000001       A       1
   000001       B       1.2
   000002       A       2.6

我想要得到结果：

   DeviceNumber  Total   A      B
     000001      3.2    2      1.2
     000002      4.6    2.6    2

有没有什么sql可以做到这一点？非常感谢!

Answer 1

是的，你可以像这样使用SUM和CASE

SELECT DeviceNumber,sum(money) as Total,
    SUM(
        CASE 
            WHEN PayWay='A' THEN Money ELSE 0
        END) as A,
    SUM(
        CASE 
            WHEN PayWay='B' THEN Money ELSE 0
        END) as B
FROM MyTable
GROUP BY DeviceNumber
ORDER BY DeviceNumber

Answer 2

SELECT DeviceNumber,  SUM(CASE WHEN PayWay='A' THEN Money  END) A,
SUM(CASE WHEN PayWay='B' THEN Money END) B,SUM(Money) TOTAL FROM TABLE
GROUP BY DeviceNumber  

你可以尝试上面的查询。