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Éú²úÄÜÁ¦£¨cap£© ¿ª¹¤ÈÕÆÚ£¨start£© Í깤ÈÕÆÚ(end) Éú²ú¹¤Ê±(hour)
8             2010-1-21   2010-1-25   20
8             2010-1-21   2010-1-26   25

ÒªµÃ³öÒÔÏÂÊý¾Ý
Éú²úÄÜÁ¦£¨cap£© Éú²úÈÕÆÚ Ã¿ÈÕÉú²ú¹¤Ê±(hour)
8         2010-1-21     8.17
8         2010-1-22     8.17
8         2010-1-23     8.17
8         2010-1-24     8.17
8         2010-1-25   8.17
8         2010-1-26     4.17
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8.17=20/5+25/6  4.17=25/6
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SQL code:

create table # (cap int, start datetime, [end] datetime, [hour] int);
insert into #
select 8, '2010-1-21', '2010-1-25', 20 union all
select 8, '2010-1-21','2010-1-26',25;

select cap, DATEADD(DD, v.[number], [start]) [date],
SUM(ROUND([hour]*1.0/(datediff(dd,#.[start],#.[end])+1),2)) [hour]
from master.dbo.spt_values v join #
on v.[number] <= datediff(dd,#.[start],#.[end])
where v.type = 'P'
group by cap, DATEADD


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