状况是:除了主键不一样外,其余全一样.而不想把数据导出,删掉重复的记录,再重新导入今天在工作中突然遇到这个问题,记得一二年前也有遇到这种问题,后来解决了. 现在却一时记不起当时的方法.没办法了自己再想吧.最后我用起了这种方法,也算是挺简单的. 不记得当时是不是也是用这种方法了.把SQL Query放在这边方便大家,如果你需要.

Select 0 as id,country,name,tel,address
Into #TMP
From Table
Where country='china'
Group by country,name,tel,address
Having count(*)>1

Update #TMP set #TMP.id = Table.id
From #TMP
Inner join Table on Table.country = #TMP.country
and Table.name = #TMP.name
and Table.tel = #TMP.tel
and (Table.address = #TMP.address or Table.address is null)

Select * from #TMP

Delete From Table Where id in (Select id From #TMP)

Drop Table #TMP

简单吧..如果你想说只删掉前面的或只删除后面的,那么加入排序.
值得注意的是字段如果是NULL的话,要像我一样加入 "or Table.address is null".不然不会匹配.

当然如果你想更小心一点的话,就先检后删.GOOD LUCK!