ASP custom function, imitating domain function DLookup in VBA
Author:Eve Cole
Update Time:2009-06-24 16:47:28
Function dlookup(strFieldName, strTableName, strWhere, objConn)
'参考Access VBA 中的Dlookup函数
'由于环境不同,加了ObjConn参数,直接将Adodb.connection直接调进来
Dim strsql
Dim rs
Set rs = server.CreateObject("adodb.recordset")
'下面要调用外部的一个自定义函数 checksql()
strFieldName = checksql(strFieldName)
If strWhere <> "" Then
strWhere = " where " & strWhere
End If
strsql="select "&strfieldname&" from "&strtablename&" " & strwhere
'debugstop strsql
On Error Resume Next
rs.Open strsql, objConn, 1, 1
If Err <> 0 Then
response.write Err.Description
response.end()
End If
If rs.EOF And rs.BOF Then
dlookup = ""
Else
'要调用一个自定义函数 NZ
'详细内容请参考 ACCESS VBA 帮助中的资料
dlookup = Nz(rs(strFieldName), "")
End If
rs.Close
End Function