×

Loading...

SQL 问题紧急求助

forex (我认为)
有多个表用UNION联合查询得到结果,如何去除其中的重复项.例如:
SELECT COL_1
FROM TABLE_A
UNION
SELECT COL_3
FROM TABLE_B

得到结果
1
1
2
3
3
4
5
6

如何得到没有重复的1到6的结果? 多谢!!!
(#277741@0)
2001-11-27 -04:00
This post has been archived. It cannot be replied.
Page address has been copied. To share, click to copy page address.
Share Online by QR Code

Back To Topic: SQL 问题紧急求助

Back To Forum: HOME枫下论坛枫下论坛主坛枫下家园电脑用户