比较不错的asp单表单字段多条件查询

用途:文章表内文章关键字查询
查询格式: 百度 google 　　百度好还是google好　百度＋google　（也可不输入条件全部查询）


<!--#include file="conn.asp"-->
<%
Function SearshSQL(Tname,Lname,Str) 'Tname-表名　Lname-列名　Str－查询的字符
If Trim(Str)="" then
        MySql="Select * From "&Tname
Else        
        Str=SqlEncode(Str)                         '预处理查询字符串
        ArrStr=split(Str," ")                '用空格分割处理后字符串
        Umax=Ubound(ArrStr)                        '分割后数组上维,确定分割成关键词的个数
        If Umax>0 Then                                '关键词中多个空格的处理,从第2维开始处理
                For i=1 to Umax
                 StrTemp=ArrStr(i)
                 If Trim(StrTemp)="" Then StrTemp="/~~~~~/" '分割成的元素为空用特殊字符代替
                 Sql=Sql &" Or "& Lname &" like '%"& StrTemp &"%'"
                Next
        End If

        MySql="Select * From "& Tname &" where "& Lname &" like '%"&ArrStr(0)&"%'"&Sql

        Do
          j=InStr(1,MySql, "%/~~~~~/%",1)
          If j=0 Then
                Exit Do
          End If
          MySql=Replace(MySql," Or "&Lname&" like '%/~~~~~/%'","")
        Loop
End IF        


SearshSQL=MySql

end function

Function SqlEncode(Str)                '格式化字符串
str=replace(str,"　"," ")        '先把左右的全角空格替换成半角空格
str=trim(str)
str=replace(str,"["," ")
str=replace(str,"';"," ")
str=replace(str,"'"," ")
str=replace(str,"_"," ")
str=replace(str,"%"," ")
str=replace(str,"+"," ")
str=replace(str,"　"," ")
sqlencode=str
end function
%>
<%
sql=SearshSQL("article","coments","萝卜＋白菜　狗熊") ＋"order by..(排序)"
Set rs=Server.Createobject("ADODB.RECORDSET")
rs.Open sql,conn,1,1
if not rs.eof then

狼蚁网站SEO优化的自己写