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exec sp_configure 'show advanced options',1
reconfigure
exec sp_configure 'Ad Hoc Distributed Queries',1
reconfigure
select * into serv_user_bak1 from
OpenRowSet('microsoft.jet.oledb.4.0','Excel 8.0;HDR=yes;database=c:\test.xls;','select * from [Sheet1$]')
---ʹÓÃÍê³Éºó£¬¹Ø±ÕAd Hoc Distributed Queries£º
exec sp_configure 'Ad Hoc Distributed Queries',0
reconfigure
exec sp_configure 'show advanced options',0
reconfigure
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--±í½á¹¹´æÔÚ¿ÉÒÔʹÓÃ
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exec sp_configure 'show advanced options',1
reconfigure
exec sp_configure 'Ad Hoc Distributed Queries',1
reconfigure
insert into serv_user_bak1
SELECT * from
OpenRowSet('microsoft.jet.oledb.4.0','Excel 8.0;HDR=yes;database=c:\test.xls;','select * from [Sheet1$]')
---ʹÓÃÍê³Éºó£¬¹Ø±ÕAd Hoc Distributed Queries£º
exec sp_configure 'Ad Hoc Distributed Queries',0
reconfigure
exec sp_configure 'show advanced options',0
reconfigure


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if OBJECT_ID('tb') is not null
drop table tb
go
CREATE TABLE tb(ID char(3),PID char(3),Name nvarchar(10))
INSERT tb SELECT '001',NULL ,'ɽ¶«Ê¡'
UNION ALL SELECT '002','001','ÑĮ̀ÊÐ'
UNION ALL SELECT '004','002','ÕÐÔ¶ÊÐ'
UNION ALL SELECT '003','001','ÇൺÊÐ'
UNION ALL SELECT '00 ......

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SELECT [All|Distinct]<Ä¿±êÁбí´ïʽ>[£¬<Ä¿±êÁбí´ïʽ>]...
from <±íÃû»òÊÓͼÃû>[£¬<±íÃû»òÊÓͼÃû>]...
[WHERE<Ìõ¼þ±í´ïʽ>]
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1.      µ±Ç°ÏµÍ³ÈÕÆÚ¡¢Ê±¼ä
        select getdate()
2. dateadd      ÔÚÏòÖ¸¶¨ÈÕÆÚ¼ÓÉÏÒ»¶Îʱ¼äµÄ»ù´¡ÉÏ£¬·µ»ØÐ嵀 datetime Öµ
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declare @str varchar(50)
 declare   @i   int  
 set @str = ''
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   while   @i<50 
   begin  
        set   @str = ......
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