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sqlserver2005Ô¶³ÌÁ¬½Ó mysql
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sp_addlinkedserver     'ntest-linkÃû',   'MySQL',  'MSDASQL--Ö§³ÖµÄÁ´½Ó·½Ê½',  'mytest-dsnÃû'
GO
sp_addlinkedsrvlogin   'ntest-linkÃû','false', 'sa-sqlserverÓû§','mythzz-sqlserverÃÜÂë'
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select  * from  ntest..pdns.tt
µ«ÊÇÎÒʽÁË Ìáʾ¾Ü¾øÓû§ÐèÒªÃÜÂë
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OPENROWSETÓëOPENQUERY£¨¾ßÌå¿ÉÒÔ²ésql°ïÖúÎĵµ£©
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SP_CONFIGURE 'show advanced options',1
GO
RECONFIGURE
GO
-- Ϊ¿ªÆôΪ¹Ø±Õ
SP_CONFIGURE 'Ad Hoc Distributed Queries',1
GO
RECONFIGURE
GO
SP_CONFIGURE 'show advanced options',0
GO
RECONFIGURE
SELECT *
from OPENROWSET('MSDASQL','mytest';'root';'mythzz',
   'SELECT * from pdns.tt')
 


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create table test
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id number(4),
name varchar2(20)
)
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insert into test values(1,'aa');
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select * from test1;
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insert into test values(1,'aa');
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select * from test1;
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2.½«JDBC½âѹµ½ÈÎÒâµÄλÖã¬ÔÚ°²×°Ä¿Â¼ÀïÕÒµ½sqljdbc.jarÎļþ£¬ÒÔÇ°µÄÎÄÕÂÖÐÒѾ­½²¹ý» ......

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select a.UserName Óû§Ãû,b.LoginName ºÅÂë,c.MenuTitle ±êÌâ,max(a.AccessTime)·ÃÎÊʱ¼ä  from JfAccessLog a,OaUser b,JfMenu c where CONVERT(char,a.AccessTime,112)=CONVERT(char,GETDATE(),112)  and a.UserId=b.UserId and a.MenuId=c.MenuId and a.MenuId=@menu group by a.UserName,b.LoginName,c.Menu ......

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select * from Exception_Log where DATEDIFF(day,OPER_DATE,getdate())<30 ;
/*
oper_date Ϊ±íÖвéѯ³öÀ´µÄʱ¼ä
getdate()ΪSQLServerÀïÃæ»ñµÃϵͳʱ¼äµÄº¯Êý
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declare   a NUMBER(10);
   begin
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