MySQL：对子查询列求和

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：两个子查询产生整数结果

解决方法:

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？

标签：calculated-columns,subquery,mysql
来源： https://codeday.me/bug/20191210/2102671.html