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我有以下表格:SQL选择这里重复,但不同的另一列
uid | key | email
-----------------
1 | 1 | [email protected]
2 | 2 | [email protected]
3 | 3 | [email protected]
4 | 4 | [email protected]
5 | 4 | [email protected]
6 | 4 | [email protected]
7 | 6 | [email protected]
8 | 7 | [email protected]
我想抓住所有具有鲜明的关键,但重复的电子邮件行的值,
结果应该看起来像:
uid | key | email
-----------------
1 | 1 | [email protected]
2 | 2 | [email protected]
3 | 3 | [email protected]
通过 “另类钥匙” 吗你是指那个键的表中只有一个出现。在你的例子中,查询是否返回键1,2,3,6和7的行? – JohnFx 2009-02-24 19:01:34