asp·ÀSQL×¢È뺯Êý
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Function
SafeRequest(ParaValue)
ParaValue =
Trim
(
Request
(ParaValue))
If
ParaValue =
""
Then
SafeRequest =
""
Exit
Function
End
If
'Òª¹ýÂ˵Ä×Ö·ûÒÔ","¸ô¿ª
LockValue =
"',Select,Update,Delete,insert,Count(,drop table,truncate,Asc(,Mid(,char(,xp_cmdshell,exec master,net localgroup administrators,And,net user,Or"
LockValue =
Split
(LockValue,
","
)
'ÅжÏÊÇ·ñÓÐ×¢Èë
For
i = 0
To
UBound
(LockValue)
If
InStr
(
LCase
(ParaValue),
LCase
(LockValue(i)))>0
Then
errmsg = 1
Exit
For
End
If
Next
'×¢Èë´¦Àí
If
errmsg = 1
Then
Response
.
Write
"<script language=
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1.¶Ô²éѯ½øÐÐÓÅ»¯£¬Ó¦¾¡Á¿±ÜÃâÈ«±íɨÃ裬Ê×ÏÈÓ¦¿¼ÂÇÔÚ where ¼° order by Éæ¼°µÄÁÐÉϽ¨Á¢Ë÷Òý¡£
2.Ó¦¾¡Á¿±ÜÃâÔÚ where ×Ó¾äÖжÔ×ֶνøÐÐ null ÖµÅжϣ¬·ñÔò½«µ¼ÖÂÒýÇæ
·ÅÆúʹÓÃË÷Òý¶ø½øÐÐÈ«±íɨÃ裬È磺
select id from t where num is null
¿ÉÒÔÔÚnumÉÏÉèÖÃ
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Ñù²éѯ£º
sel ......
¾³£»á¿´¼ûÔÚSQL³ÌÐòµÄ¿ªÍ·ÓÐÕâÑùÒ»¾ä»°
if OBJECT_ID('tb') is not null
drop table tb
º¯ÊýÓï·¨ÊÇÕâÑù£º
int OBJECT_ID('objectname');
×÷ÓÃÊÇ¿´¶ÔÏóobjectnameÊÇ·ñ´æÔÚ¡£
ÆäÖвÎÊýobjectname±íʾҪʹÓõĶÔÏó£¬ÊÇchar»òÕßncharÀàÐÍ¡£
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Ò»¡¢SQL´æ´¢¹ý³ÌµÄ¸ÅÄÓŵ㼰Óï·¨
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Rebuild indexes online with SQL Server 2005
http://blogs.techrepublic.com.com/datacenter/?p=249
Online index rebuild
SQL Server 2005 introduces the ability to rebuild your indexes in an
online fashion so that other processes are able to access the table
while the rebuild is occurring. Because y ......
[Sql]EXCEPT ºÍ INTERSECT¹Ø¼ü×Ö
http://www.cnblogs.com/treeyh/archive/2008/07/01/1232845.html
EXCEPT
´Ó EXCEPT ²Ù×÷Êý×ó±ßµÄ²éѯÖзµ»ØÓұߵIJéѯδ·µ»ØµÄËùÓзÇÖØ¸´Öµ¡£
INTERSECT
·µ»Ø INTERSECT ²Ù×÷Êý×óÓÒÁ½±ßµÄÁ½¸ö²éѯ¾ù·µ»ØµÄËùÓзÇÖØ¸´Öµ¡£
A. ʹÓà EXCEPT
ÔÚʾÀýÖÐʹÓà TableA ºÍ TableB ÖеÄÊý¾Ý¡£
......