MySQL：对子查询列求和

发布时间：2020-05-23 06:24:34 所属栏目：MySql 来源：互联网

导读：在MySQL中是否有一种优雅的方法可以做到这一点：SELECT (subquery1) AS s1, (subquery2) AS s2, (s1+s2) AS s3 还是我必须诉诸SELECT (subquery1) AS s1, (subquery2) AS s2, ((subquery1)+(subquery2)) AS s3 ？谢谢编辑：两个子查询产

在MySQL中是否有一种优雅的方法可以做到这一点：

SELECT (subquery1) AS s1,(subquery2) AS s2,(s1+s2) AS s3

还是我必须诉诸

SELECT (subquery1) AS s1,((subquery1)+(subquery2)) AS s3

？

谢谢

编辑：两个子查询产生整数结果

最佳答案您可以在MySQL中使用变量


SELECT @query1:=(subquery) AS s1,@query2:=(subquery) AS s2,(@query1+@query2) AS s3

仍然没有那么优雅.也许您可以详细说明子查询,以便我们可以提出更好的方法？

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