这在MySQL中是否有优雅的方法实现?
或者我必须求助于什么?
SELECT (subquery1) AS s1, (subquery2) AS s2, (s1+s2) AS s3
或者我必须求助于什么?
SELECT (subquery1) AS s1, (subquery2) AS s2, ((subquery1)+(subquery2)) AS s3
?
谢谢
编辑:两个子查询都产生整数结果