sql2008百万级数据排除重复信息
摘要：
--高性能排除重复select userid from table where userid in ( select userid from ( select userid, row_number()over(partition by email order by userid ) num fr... 阅读全文
posted @ 2013-12-13 16:21 loveking_阳 阅读(225) 评论(0) 推荐(0) 编辑
