把两个字段的和作为新的字段
把两个字段的和作为新的字段
sql语句select top 1 name,topic+retopic as topic from [user] order by topic desc
php写法
$from = array("id","regtype","name","exch","exeng","exmath","exgen","exske","excolor","excultotal","exspetotal","(excultotal+exspetotal) as total");
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