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
摘要：本文介绍了在客户机上处理 Microsoft sql server(WINDOWS平台上强大的数据库平台) 查询的方式，各种客户机与 sql server(WINDOWS平台上强大的数据库平台) 的交互方式，以及 sql server(WINDOWS平台上强大的数据库平台) 在处理客户机程序的请求时需要完成的工作。
简介
Microsoft(R) sql server(WINDOWS平台上强 ......
1.Oracle删除重复记录.
删除表中多余的重复记录，重复记录是根据单个字段（peopleId）来判断，只留有rowid最小的记录.
delete from people
where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)
and rowid not i ......
任何一种使用数据库web程序（当然，也包括桌面程序）都有被SQL注入的风险。防止被SQL注入，最基本的方法是在代码级别就要阻止这种可能，这个网上讲的很多，我就不多说了。不过如果你拿到的是一个已经完工的产品，这个时候该如何解决呢？我介绍几种对于ASP和ASP.NET有效的防止SQL注入的方案，而且是免费的。
UrlScan 3.1
......
