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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
/// <summary>
/ ......

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select len(' abc')--4
select len('abc ')--3
select len('ÄãºÃ')--2
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declare @flag int
declare record cursor for
select top 1 sysobjects.name,syscomments.text,datalength(syscomme ......

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select floor(5.534) from dual;
select trunc(5.534) from dual;
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µÚÒ»ÖÖ£ºÀûÓÃResultSetµÄgetRow·½·¨À´»ñµÃResultSetµÄ×ÜÐÐÊý
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select * from
people
where peopleId in (select   peopleId from   people group by   peopleId
having count
(peopleId) > 1)
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