模板
教程
环境
性能
功能
管理
解决数据库中记录重复问题
发表于：2007-06-08来源：作者：点击数：
标签：
asp?ofact=1ofmsgid=172ofdisp=2ofpage=1ofrand=0#openforum>解决 数据库 中记录重复问题 (By:aloxy) Jul 22, 11:19 --产品数据重复统计 SELECT mc, userid, COUNT(mc) AS Expr1 FROM chanpin GROUP BY mc, userid --将不重复的纪录插入新表newchanpin selec
| |||
| --产品数据重复统计 SELECT mc, userid, COUNT(mc) AS Expr1 FROM chanpin GROUP BY mc, userid --将不重复的纪录插入新表newchanpin select * into #Tmp1 from chanpin go select min(ID) as autoID into #Tmp2 from #Tmp1 group by mc, userid go select * into newchanpin from #Tmp1 where ID in(select autoID from #tmp2) --查找重复用户 --select distinct name from user_name select * into #Tmp0 from user_name go select min(ID) as autoID into #Tmp6 from #Tmp0 group by admin go select * into newuser_name from #Tmp0 where ID in(select autoID from #tmp6) --用户自定义类别 SELECT userlb AS Expr1, userid AS Expr2, COUNT(userlb) AS Expr3 FROM newuser_lb GROUP BY userlb, userid select * into #Tmp8 from user_lb go select min(ID) as autoID into #Tmp9 from #Tmp8 group by userlb, userid go select * into newuser_lb from #Tmp8 where ID in(select autoID from #tmp9) --用户新闻 select bt, userid,count(bt) from user_news group by bt,userid select * into #Tmp88 from user_news go select min(ID) as autoID into #Tmp99 from #Tmp88 group by bt,userid go select * into newuser_news from #Tmp88 where ID in(select autoID from #tmp99) |
