如果您使用的是SQL Server 2005或更高版本：

With Dups As
    (
    Select Id, Name
        , Row_Number() Over ( Partition By Name Order By Id ) As Num
    From Table1
    )
Delete Table1
Where Id In (
            Select Id
            From Dups
            Where Num > 1
            )

如果使用SQL Server 2000及更低版本

Delete Table1
Where Exists    (
                Select 1
                From Table1 As T1
                Where T1.Name = Table1.Name
                Having Min( T1.Id ) <> Table1.Id
                )