SQL计算基于另一列的和

Question

我有一张包含以下数据的表格：

Account number     Amount
13                 40
34                 30
14                 30
13                 60
14                 10

我想知道如何编写查询以返回以下结果

Account number     Total amount
13                 100
14                 40
34                 30

查询应计算共享相同帐号的金额列中所有金额的总和。

非常感谢任何帮助！

Answer 1

请尝试：

select
    [Account Number],
    sum(Amount) Amount
from
    YourTable
Group by [Account Number]

Answer 2

使用Group By + SUM

SELECT [Account number],
       SUM(Amount) As [Total Amount]
FROM dbo.Table1
GROUP BY [Account Number]
ORDER BY SUM(Amount) DESC

Demo