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date (datetimeÀàÐÍ) 
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select sum(consume),day([date]) from consume_record where year([date]) = '2006' group by day([date]) 
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select sum(consume),datename(week,[date]) from consume_record where year([date]) = '2006' group by datename(week,[date]) 
--°´Ô 
select sum(consume),month([date]) from consume_record where year([date]) = '2006' group by month([date]) 
--°´¼¾ 
select sum(consume),datename(quarter,[date]) from consume_record where year([date]) = '2006' group by datename(quarter,[date]) 
 
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#include "stdio.h"
#import "C:\program files\common files\system\ado\msado15.dll" no_namespace rename("EOF","adoEOF")
int main(int argc, char* argv[])
{
   ::CoInitialize(NULL);
_ConnectionPtr m_pConnection;
m_pConnection.CreateInstance("ADODB.Connection");
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