经典sql代码--时间天数相差5天以上并且记录条数大于2的信息

查询时间天数相差5天以上并且记录条数大于2的信息，用到了临时表。
很实用的一段代码，供大家学习参考。

--时间天数相差5天以上并且记录条数大于2的信息
if not object_id('Tempdb..#T') is null
    drop table #T
Go
Create table #T([ID] int,[NAME] nvarchar(1),[DTIME] Datetime)
Insert #T
select 1,N'张','2007-12-15' union all
select 2,N'刘','2008-10-12' union all
select 3,N'王','2009-10-13' union all
select 4,N'赵','2009-12-15' union all
select 5,N'孙','2009-12-17' union all
select 6,N'于','2009-12-14' union all
select 7,N'李','2009-12-10' union all
select 8,N'高','2009-12-01' union all
select 9,N'金','2009-12-10'
Go
Select * from #T

select * from [表名] where datediff(day,DTIme,getdate())>5 and [Name] in (select [Name] from [表名] group by [Name] having count([Name])>2)

declare @i int
select @i = count(*) from #T where DateDiff(day,[DTIME],getdate()) > 5
if @i > 2
select * from #T where DateDiff(day,[DTIME],getdate()) > 5

/*
ID          NAME DTIME
----------- ---- -----------------------
1           张    2007-12-15 00:00:00.000
2           刘    2008-10-12 00:00:00.000
3           王    2009-10-13 00:00:00.000
7           李    2009-12-10 00:00:00.000
8           高    2009-12-01 00:00:00.000
9           金    2009-12-10 00:00:00.000

(6 行受影响)
*/

原文链接：http://www.cnblogs.com/zengxiangzhan/archive/2010/01/03/1638194.html