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--------------------------------
id    id2
1      1
2      0
3      0
---------------------------------

id Ϊ×Ô¶¯±àºÅ µ±ÎÒÅжÏid=1µÄʱºò id2ÏîΪ1 Ôõô¸øÆäËûµÄidΪ0,Ò»ÏÂÃÉÁË
UPDATE id2=1 WHERE id=1;
UPDATE id2=0 WHERE id <>1;
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UPDATE table SET id2=1 WHERE id=1;
UPDATE table SET id2=0 WHERE id <>1;


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<%
skin=request("skin")
if request("skin") <>"" then
Set rs=Server.CreateObject("adodb.recordSet")
rs.open "select * from skin where skin='"&skin&"'",conn,1,3
rs("style")=1
rs.update
rs.close
Set rs=Server.CreateObject("adodb.recordSet")
rs.open "select * from skin where skin <>'"&skin&"'",conn,1,3
rs("style")=0
rs.update
rs.close
set rs=nothing
end if
%>
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SQL code:
update table
set id2 = 0
where (select count(*) from table where id=1 and


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<!--#include file="Conn.asp"-->
<body>
<table border="0" align="left" cellpadding="0" cellspacing="0">
<%

URL ......

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  rs.open "select * from question",conn,1,3
  if ......
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