Using ADO to write a blob in VBA

Dear mates,

I have a question concerning the postgresql page

http://psqlodbc.projects.postgresql.org/howto-vblo.html

I tried the ADO (Active X Data objects) blob version using postgres server version 8.4 (postgres ODBC client 8.04.01) with a table in two variants

* table (main integer, object oid)
* table (main integer, object bytea)

but got back the error message: "Type lo does not exist" when executing with

Set rs = cmd.Execute

So, either this page is outdated or I am doing something wrong: Is there a third binary type in postgresql that I should use?

Thanks a lot for any short answer. Would be very helpful, because I have to port
a visual basic script ( I dislike this language by the way :) ) to work together with
postgresql.

Best regards and cheers,

Stephan

Here is the way I tried it:

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Sub Try()
Dim cn As New ADODB.Connection
Dim rs As ADODB.Recordset
Dim cmd As ADODB.Command
Dim chunk() As Byte
Dim fd As Integer
Dim flen As Long
Dim main As ADODB.Parameter
Dim object As ADODB.Parameter

' Connect to the database using ODBC
With cn
.ConnectionString = "dsn=xxx; pwd=yyy"
.Open
.CursorLocation = adUseClient
End With

ret = cn.Execute("create table newtesttable (main integer, object oid)")

' Here is an example if you want to issue a direct command to the database
'
'Set cmd = New ADODB.Command
'With cmd
' .CommandText = "delete from MYTABLE"
' .ActiveConnection = cn
' .Execute
'End With
'Set cmd = Nothing

'
' Here is an example of how insert directly into the database without using
' a recordset and the AddNew method
'
Set cmd = New ADODB.Command
cmd.ActiveConnection = cn
cmd.CommandText = "insert into newtesttable(main,object) values(?,?)"
cmd.CommandType = adCmdText

' The main parameter
Set main = cmd.CreateParameter("main", adInteger, adParamInput)
main.Value = 100 '' a random integer value ''
cmd.Parameters.Append main

' Open the file for reading
fd = FreeFile
Open "myBlobFile.txt" For Binary Access Read As fd
flen = LOF(fd)
If flen = 0 Then
Close
MsgBox "Error while opening the file"
End
End If

' The object parameter
'
' The fourth parameter indicates the memory to allocate to store the object
Set object = cmd.CreateParameter("object", _
adLongVarBinary, _
adParamInput, _
flen + 100)
ReDim chunk(1 To flen)
Get fd, , chunk()

' Insert the object into the parameter object
object.AppendChunk chunk()
cmd.Parameters.Append object

' Now execute the command
Set rs = cmd.Execute

' ... and close all
cn.Close
Close

End Sub

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