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    name        starttime            endtime     
    lily      2009-1-1 9:00:00    2009-1-1 9:10:00


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SQL code:
select
name,
sum(case when datepart(hh,endtime)>9 then 1 else 0 end) as ³Ùµ½´ÎÊý
from
tb
group by
name


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SQL code:
-- =============================================
-- Author: T.O.P
-- Create date: 2009/11/26
-- Version: SQL SERVER 2005
-- =============================================
declare @TB table([name] varchar(4),[starttime] datetime,[endtime] datetime,[wtime] datetime)
insert @TB
select 'lily','2009-1-1 9:00:00','2009-1-1 9:10:00','2009-1-1 9:02:00' union all
select 'lily','2009-1-1 9:00:00','2009-1-1 9:10:00','2009-1-1 9:02:00' union all
select 'lily','200


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