解决中记录重复问题

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解决数据库中记录重复问题(By:aloxy)Jul22,11:19--产品数据重复统计SELECTmc,userid,COUNT(mc)ASExpr1FROMchanpinGROUPBYmc,userid--将不重复的纪录插入新表newchanpinselect*into#Tmp1fromchanpingoselectmin(ID)asautoIDinto#Tmp2from#Tmp1groupbymc,useridgoselect*intonewchanpinfrom#Tmp1whereIDin(selectautoIDfrom#tmp2)--查找重复用户--selectdistinctnamefromuser_nameselect*into#Tmp0fromuser_namegoselectmin(ID)asautoIDinto#Tmp6from#Tmp0groupbyadmingoselect*intonewuser_namefrom#Tmp0whereIDin(selectautoIDfrom#tmp6)--用户自定义类别SELECTuserlbASExpr1,useridASExpr2,COUNT(userlb)ASExpr3FROMnewuser_lbGROUPBYuserlb,useridselect*into#Tmp8fromuser_lbgoselectmin(ID)asautoIDinto#Tmp9from#Tmp8groupbyuserlb,useridgoselect*intonewuser_lbfrom#Tmp8whereIDin(selectautoIDfrom#tmp9)--用户新闻selectbt,userid,count(bt)fromuser_newsgroupbybt,useridselect*into#Tmp88fromuser_newsgoselectmin(ID)asautoIDinto#Tmp99from#Tmp88groupbybt,useridgoselect*intonewuser_newsfrom#Tmp88whereIDin(selectautoIDfrom#tmp99)<script type="text/javascript"><!--google_ad_client = "pub-2947489232296736";/* 728x15, 创建于 08-4-23MSDN */google_ad_slot = "3624277373";google_ad_width = 728;google_ad_height = 15;//--></script><script type="text/javascript"src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>

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