mysql 两个查询结果 并 运算
mysql 两个查询结果 并 运算
select column1 as one from a where id=1; select column2 as two from b where id=1;
求 one two 运算
加法 select ( (select column1 as one from a where id=1)+(select column2 as two from b where id=1) );
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mysql 两个查询结果 并 运算
select column1 as one from a where id=1; select column2 as two from b where id=1;
求 one two 运算
加法 select ( (select column1 as one from a where id=1)+(select column2 as two from b where id=1) );