declare
@aa varchar(20)
set @aa= CONVERT(varchar(100), GETDATE(), 23)
--//日
print @aa+' 0:00:00.000'
print @aa+' 23:59:59.999'
--//周
print CONVERT(varchar(100), DATEADD(wk, DATEDIFF(wk,0,getdate()), 0), 23)+' 0:00:00.000'
print CONVERT(varchar(100), DATEADD(wk, DATEDIFF(wk,0,getdate()), 6), 23)+' 23:59:59.999'
--//月
print CONVERT(varchar(100), DATEADD(m, DATEDIFF(m,0,getdate()), 0), 23)+' 0:00:00.000'
print CONVERT(varchar(100), DATEADD(m, DATEDIFF(m,0,getdate()), 30), 23)+' 23:59:59.999'
select distinct (userid),sum(score) as SumScore from ph where endTime between @aa+' 0:00:00.000' and @aa+' 23:59:59.999' group by userid order by SumScore desc
select distinct (userid),sum(score) as SumScore from ph where endTime between CONVERT(varchar(100), DATEADD(wk, DATEDIFF(wk,0,getdate()), 0), 23)+' 0:00:00.000' and CONVERT(varchar(100), DATEADD(wk, DATEDIFF(wk,0,getdate()), 6), 23)+' 23:59:59.999' group by userid order by SumScore desc
select distinct (userid),sum(score) as SumScore from ph where endTime between CONVERT(varchar(100), DATEADD(wk, DATEDIFF(wk,0,getdate()), 0), 23)+' 0:00:00.000' and CONVERT(varchar(100), DATEADD(wk, DATEDIFF(wk,0,getdate()), 6), 23)+' 23:59:59.999' group by userid order by SumScore desc
1。如果装sql server中未出现异常的话，且一些自选参数，账户，密码等没有错误的话。一旦出现诸如socket建立不起，连接不上等问题。最有效的解决方法是打补丁，其中sp4：http://www.microsoft.com/downloads/details.aspx?DisplayLang=zh-cn&FamilyID=8e2dfc8d-c20e-4446-99a9-b7f0213f8bc5，sp3a：http://www.microsof ......
SqlCommand com = new SqlCommand("select * from myuser where username=@UserName and password=@Pwd", con);
com.Parameters.Add(new SqlParameter("@UserN ......
2005不论是性能还是安全性都是SQL SERVER2000有所增强，现有不少企业在使用2005，或是有的用户是2000与2005同时使用，那么这中间就涉及到双数据的转换问题：
今天我们就来看一下相关的实现方法：
本人的实现环境介绍：
方法一： 使用分离与附加 该方法适合于将SQL Server 2000中的数据转换到SQL Server2 ......
