如何在PHP SELECT语句中读取SUM()分组函数？

Question

我有这个

"SELECT SUM( state ) FROM `vote` WHERE id ='5'"

现在当在php中添加它时,我该怎么做

$xx= mysql_fetch_array(
    mysql_query("SELECT SUM( state ) FROM `vote` WHERE id ='5'")
);

我能这样做吗:

echo $xx['SUM( state )'];

Answer 1

给SUM(state)一个别名.

SELECT SUM( state ) AS SummedState FROM `vote` WHERE id ='5'

现在,引用别名

echo $xx['SummedState']