如何更改此代码以在结果中查看 A 列和 D 列?
SQL> SELECT A FROM R WHERE EXISTS
(SELECT D FROM S WHERE S.D=R.A AND S.C=R.B);
结果:
A
----------
1
最佳答案
Select
A, D
From
R
Inner Join
S
On S.D = R.A And S.C = R.B
关于sql - SELECT 语句 - 将附加列添加到结果集中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13755377/