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select datepart(yy,cdate) as 'Ô·Ý',sum(cmoney) from consumption group by datepart(yy,cdate)
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select datepart(mm,cdate) as 'Ô·Ý',sum(cmoney) from consumption where datepart(yy,cdate)=2009 group by datepart(mm,cdate)
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select DATEPART(wk,cdate) as 'ÖÜ', sum(cmoney) from consumption group by DATEPART(wk,cdate)
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select DATEPART(dd,cdate) as 'ºÅ', sum(cmoney) from consumption where datepart(mm,cdate)=6 group by DATEPART(dd,cdate)
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year yy 1753--9999
quarter qq 1--4
month mm 1--12
day of year dy 1--366
day dd 1--31
week wk &n
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declare @i int
set @i=1
while @i<30
begin
insert into test (userid) values(@i)
set @i=@i+1
end
---------------
while Ìõ¼þ
begin
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set @i=@i+1
end
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