SQL如何在每个sum列的最后一列中获取sum列

我使用的是用户Keevas的例子，但问的是另一个问题

select Master_Code, SUM(Jan), SUM(Feb), SUM(Mar)
 from dbo.foobar
WHERE Participating_City = 'foofoo'
GROUP BY Master_Code ORDER BY Master_Code ASC

大概是这样的：

Master_Code sum(Jan) Sum(Feb) sum(Mar)  Total
        1     4         5       4        13
        2     5         5       5        15

如何获取总值列？谢谢

这应该有效：

select Master_Code, 
       SUM(Jan), 
       SUM(Feb),
       SUM(Mar),
       SUM(Jan+Feb+Mar) as Total
from dbo.foobar
WHERE Participating_City = 'foofoo'
GROUP BY Master_Code
ORDER BY Master_Code ASC

select Master_Code
    , SUM(Jan)
    , SUM(Feb)
    , SUM(Mar)
    , (SUM(Jan + Feb + Mar)) As Total
 from dbo.foobar
WHERE Participating_City = 'foofoo'
GROUP BY Master_Code 
ORDER BY Master_Code ASC

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只需使用加号添加它们

SELECT Master_Code, SUM(Jan), SUM(Feb), SUM(Mar), SUM(Jan) + SUM(Feb) + SUM(Mar) FROM...