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在ASP中列出数据库中的表名和字段名的程序

March 25,2004

<%
dsn = "DSN=DSNName"
Const adSchemaTables = 20
adSchemaColumns = 4
Set oConn = Server.CreateObject("ADODB.Connection")

oConn.open dsn
Set rstSchema = oConn.OpenSchema(adSchemaColumns)
   response.write "<table>"
   response.write "<tr><td>Table name</td><td>field name</td><td>field type</td><td>is nullable</td><td>field size</td></tr>"
tablename=""
Do Until rstSchema.EOF
   response.write "<tr><td>"
   if rstSchema("Table_name") <> tablename then
      response.write rstSchema("Table_name")
      tablename = rstSchema("Table_name")
   else
      response.write " "
   end if
   response.write "</td><td>"& rstschema("column_Name") & "</td><td>"
   select case rstschema("data_type")
      case "130"
         if rstschema("CHARACTER_MAXIMUM_LENGTH") = 1073741823 then
            response.write "Memo"
         else
            response.write "Text"
         end if
      case 135
         response.write "Date/Time"
      case 3
         response.write "Long Integer"
      case 11
         response.write "Yes/No"
      case 131
         response.write "Currency"
      case else
         response.write rstschema("data_type")
   end select
   response.write  "</td><td>" & rstschema("is_nullable") & "</td><td>"
   if rstschema("CHARACTER_MAXIMUM_LENGTH") <> 1073741823 then
      response.write rstschema("CHARACTER_MAXIMUM_LENGTH")
   else
      response.write " "
   end if
   response.write "</td></tr>"
   rstSchema.MoveNext
Loop
response.write "</table>"
%>