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Thread: Retrieving primary key names from Access 2003

  1. #1
    Join Date
    Jul 2006

    Retrieving primary key names from Access 2003

    Does anyone know how Access 2003 stores the names of the primary keys of a database? I'm using an ODBC connection, but the current driver I have for Access (4.00.6304.00) doesn't support the function SQLPrimaryKeys(). I looked in the system tables, but I can't find the names. I've searched this board but can't seem to find someone who has had a similar problem.

    I want to know the names because I want to be able to build queries to drop an existing primary key from a given table.
    Last edited by aleksander3; 07-18-2006 at 03:34 PM.

  2. #2
    Join Date
    Dec 2003
    I don't know whether you are using DAO or ADO but one method is to use ADOX (Microsoft ADO Ext 2.x for DDL and Security):

    Dim catADOX As New ADOX.Catalog
    catADOX.ActiveConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
                         "Data Source=C:\Test Files\db1 XP.mdb;"
    For Each keyADOX In catADOX.Tables("Table1").Keys
        If keyADOX.type = adKeyPrimary Then
            Debug.Print keyADOX.Name
            Exit For
        End If
    Next keyADOX
    Set catADOX = Nothing
    Set keyADOX = Nothing
    OpenSchema would be another option.

    Personally I can't recommend using ODBC with a Jet database since it's not as stable as Jet OLEDB and is lacking in features.
    Microsoft MVP (Visual Basic)

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