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用SQL语句,删除掉重复项只保留一条在几千条记录里,存在着些相同的记录,如何能用SQL语句,删除掉重复的呢1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select * from peoplewhere peopleId in (select peopleId from... 阅读全文
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是不是SQL Server?是的话使用区分大小写的排序规则来比较即可。比如select * from 表where 字段 like '%[a-z]%' collate chinese_prc_bin 阅读全文
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SETANSI_NULLSONGOSETQUOTED_IDENTIFIERONGO--=============================================--Author: --Createdate:--Description: --=====================... 阅读全文
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declare @OrderTable Table(Rid int identity(1,1),Orderid int)declare @V_Count int=0insert into @OrderTable(Orderid)select idfrom T_OMSOnlineOrder twher... 阅读全文
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测试端口使用telnet IP地址或主机名 端口,使用tcp协议的例如 telnet 192.168.0.1 80测试192.168.0.1的80端口 阅读全文
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USE[master]GOALTERDATABASEOMSDBSETRECOVERYSIMPLEWITHNO_WAITGOALTERDATABASEOMSDBSETRECOVERYSIMPLEGOUSEOMSDBGODBCCSHRINKFILE(N'OMSDB_Log',100,TRUNCATEON... 阅读全文
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IFNOTEXISTS(SELECT*FROM[dbo].[T_OMS_Distributor]WHEREId=-1)BEGINSETIDENTITY_INSERT[dbo].[T_OMS_Distributor]ONINSERT[dbo].[T_OMS_Distributor]([Id],[Own... 阅读全文
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select COUNT(*),OriginalOrderNo,sku from (select OriginalOrderNo, stuff((select ','+Sku from dbo.T_OMSRefundOrderProduct sp WITH(NOLOCK) WHERE sp.OMSRefundOrderId =a.Id for xml path('')), 1, 1, '') sku from T_OMSRefundOrder a ) b where b.sku is not nullgroup by OriginalOrderN 阅读全文
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现在我要查:select * from dual where time = to_date('2012-06-18 11:41:41','yyyy-MM-dd hh24:mi:ss');这样是能查询处理的。但是,时间是我从页面得到的值,是省略了时分秒的select * from dual where time = to_date('2012-06-18','yyyy-MM-dd');这样是查不出来的。写法有很多种,例如下面的:方法一:select * from dual where time between to_date( 阅读全文
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select a.ordercode,count(*) from tb_order_yhd a group by a.ordercode having count(*)>1; 阅读全文