SQL重复记录查询，删除除Id最小值外的重复记录

题目：

找出教师表（Teacher）中姓名（Name）重复的数据，然后删除多余重复记录，只留字段ID最小的那个。

delete from Teacher 
        where Name in (select Name from Teacher group by Name Having Count(*)>1)
        and ID not in (select Min(ID) from Teacher group by Name Having Count(*)>1);

另外网上资料参考（讲的很好）：
http://www.jb51.net/article/93269.htm