如何获取sql中的行总和答案

【问题标题】：How to get sum of rows in sql如何获取sql中的行总和
【发布时间】：2015-02-21 16:14:57
【问题描述】：

我需要获取每一行的总数，但我不能为该行取别名，因为它会给出错误。如何获取以下语句中行的 sum()。

select sum(Amount) as [Amount total],
       sum(balance) as [Balance Total],
       sum(Remaining) as [Remaining Total]
from MyTable

我想做类似的事情

select sum(Amount) as [Amount total],
       sum(balance) as [Balance Total],
       sum(Remaining) as [Remaining Total],
       [Amount total]+[Balance Total]+[Remaining Total] as Total
from MyTable

【问题讨论】：

标签： sql sql-server select sum

【解决方案1】：

您不必对总和求和，只需对它们正在求和的列求和，您就会得到总和：

select sum(Amount) as [Amount total],sum(balance)[Balance Total]
,sum(Remaining)[Remaining Total],SUM(Amount+Balance+Remaining) as Total
    from MyTable

【讨论】：

【解决方案2】：

试试这个：

SELECT SUM(Amount) AS [Amount total], 
       SUM(balance) AS [Balance Total], 
       SUM(Remaining) AS [Remaining Total], 
       SUM(Amount + balance + Remaining) AS Total
FROM MyTable

【讨论】：

【解决方案3】：

重复表达式、使用子查询或使用 CTE。这是第一个选择：

select sum(Amount) as [Amount total],
       sum(balance) as [Balance Total],
       sum(Remaining) as [Remaining Total],
       (sum(Amount) + sum(balance) + sum(Remaining)) as Total
from MyTable;

在定义它们的同一级别上无法识别列别名。

【讨论】：