急。。。如何统计某天前所有记录。。。。

[heyun139___]

eg:

每当传递参数，YEAR,MONTH,

表table : ID,Name,code ,Datetime.

如何统计Datetime 当前日期前所有的记录呀。

[dawugui]

select * from tb where convert(varchar(10),日期,120) < convert(varchar(10),getdate(),120)

[dawugui]

每当传递参数，YEAR,MONTH??
是按这两参数还是当前日期?

[leo_lesley]

declare @year varchar(4) , @month varchar(4)

select @year='2007',@month='12'

select * from 表table where DATEDIFF(day,[Datetime] ,cast(@year+'-'+@month+'-'+'01' as datetime)) >=0

[leo_lesley]

----example

create table tab(ID int,Name varchar(10),code varchar(10),[Datetime] datetime)
insert tab

select 1,'aa','aaa','2006-01-05'
union select 2,'bb','bbb','2007-10-12'
union select 2,'bb','bbb','2007-11-12'
union select 2,'bb','bbb','2007-12-12'
union select 2,'bb','bbb','2008-12-12'

declare @year varchar(4) , @month varchar(4)

select @year='2007',@month='12'

select * from tab where DATEDIFF(month,[Datetime] ,cast(@year+'-'+@month+'-'+'01' as datetime)) >=0

drop table tab

/*    结果 
ID          Name       code       Datetime                                               
----------- ---------- ---------- ------------------------------------------------------ 
1           aa         aaa        2006-01-05 00:00:00.000
2           bb         bbb        2007-10-12 00:00:00.000
2           bb         bbb        2007-11-12 00:00:00.000
2           bb         bbb        2007-12-12 00:00:00.000

（所影响的行数为 4 行）
*/

[leo_lesley]

如果比较到具体的天,就用第一种,如果只比较到月份,就用第二种

[heyun139___]

非常感谢大家帮忙。。。。。

要统计’200712‘之前的记录就如下了：

declare @year varchar(4) , @month varchar(4)
select @year='2007',@month='12'
select count(1) as total from tab where DATEDIFF(month,[Datetime] ,cast(@year+'-'+@month+'-'+'01' as datetime)) >=0

[wangxuelid]

select logouttime_ from Currentuser where Convert(varchar(10),logouttime_)=Convert(varchar(10),getdate())