Php 在mysql中获取列的和
我使用的是用户Keevas的例子,但问的是另一个问题Php 在mysql中获取列的和,php,mysql,sql,identity-column,Php,Mysql,Sql,Identity Column,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
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 阅读有关
SUM()
和groupby
的内容,您可以在此链接上查阅:
SELECT username,SUM(value) AS SumValue FROM
table GROUP BY username ORDER BY SumValue DESC