How to connect to Netezza (PureData System for Analytics) via VBA - sql

Question

I am trying to connect to connect to Netezza using VBA. I have enabled the following:
Microsoft Excel 15.0 Object Library
Microsoft Office 15.0 Object Library
Microsoft ActiveX Data Objects 6.1 Library
Visual Basic for Applications
Here is my code:
Sub NZConn()
Dim cmd As New ADODB.Command
Dim rs As New ADODB.Recordset
Dim x As Variant
Set cmd = New ADODB.Command
Set RS = New ADODB.Recordset
cmd.ActiveConnection = "Driver={Netezza " & _
"ODBC};servername=servername;port=####;database=database;" & _
"username=username;password=password;"
cmd.ActiveConnection.CursorLocation = adUseClient
cmd.CommandTimeout = 120
cmd.CommandType = adCmdText
x = "Write Query here"
cmd.CommandText = x
Set rs = cmd.Execute
Sheet1.Range("A1").CopyFromRecordset rs
cmd.ActiveConnection.Close
End Sub
I can get the code to run without throwing back an error, but there is nothing that is pasted from the record set, which leads me to believe that is may have something to do with the structure of the connection string.
I have the server, user id, password, database, port, and driver.
Would I need to establish / open an ActiveConnection first?

Answer 1

I was able to figure out the issue on my own. I found that there is a command line builder in the 'Tools' tab in Aginity, which helped specify the exact connection string I needed to connect to Netezza. Once I had this connection string, I was getting an 'architecture mismatch' error. After downloading the 32-bit ODBC drivers for Netezza, the methodology worked perfectly. Here is the updated code below:
Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset
Dim iCols As Integer
Dim DB As String, User As String, PW As String, ConnectionString As String
Dim Server As String, Query As String
Dim SQLTable As Worksheet
Set cn = New ADODB.Connection
Set rs = New ADODB.Recordset
Set SQLTable = Sheet1
Server = SQLTable.Cells(2,3).Value
User = SQLTable.Cells(2,4).Value
PW = SQLTable.Cells(2,5).Value
DB = SQLTable.Cells(2,6).Value
Query = SQLTable.Cells(2,7).Value
ConnectionString = "Driver={NetezzaSQL};" & _
"server=" & Server & ";" & _
"UserName=" & User & ";" & _
"Password=" & PW & ";" & _
"Database=" & DB & ";" & _
"Query Timeout=120"
cn.Open (ConnectionString)
rs.Open (Query), cn
For iCols = 0 To RS.Fields.count - 1
Worksheets("Sheet2").Cells(1, iCols + 1).Value = rs.Fields(iCols).Name
Next
Worksheets("Sheet2").Cells(2, "A").CopyFromRecordset rs
rs.Close
cn.Close
NB:
"IBM NETEZZA ODBC DRIVER – 32 BIT" is what I downloaded
"ODBC-DRIVER-FOR-NETEZZA-7-X86" is what showed up in my software center to install
"Name: NetezzaSQL ; Version: 7.00.04.41188 ; Company: www.ibm.com ; File: NSQLODBC.DLL" is what is shown now in my 32-bit 'ODBC Data Source Administrator' window

Answer 2

I think your connection string is ok, and yes you should need to open a connection first.
Like this:
AccessConnect = "Driver={Netezza " & _
"ODBC};servername=servername;port=####;database=database;" & _
"username=username;password=password;"
Dim Conn1 As New adodb.Connection
Conn1.ConnectionString = AccessConnect
Conn1.Open
then it would be
Set RS = Conn1.Execute(x) 'where x is your query