Automate ODBC Linked Table using VBA

  • Thread starter Thread starter Allison
  • Start date Start date
A

Allison

How can I automate importing a linked table using VBA
Code. This will be a standard process for our department.

Current Situation:

Our table is located in another system. The process we
currently use is to link to the table prepare a make table
query in order to extract the data we need for our
department.


Future:

We would like to use VBA code to automatically update all
the fields in our make table query. We also need for the
code to be Public instead of Private.

Logic Behind the Update:

We use the same fields from the outside table each time we
do an analysis but the information changes constantly and
the fields stay the same. We are trying to avoid
massaging the table each time is there a way to have a
standard table that we can default to and the information
is automatically updated.
 
I use this procedure to re-create links to SQL Server.
====================================================
For Jet re-linking code see:
http://www.mvps.org/access/tables/tbl0009.htm
====================================================
(This eliminates the need to re-name all the tables to strip out dbo_ and it
allows you to point to different versions of the same database easily.)
There is a local Access table (tblODBCTables) that contains the table names
I want to link to on the Server.
Note: the source table name needs the dbo. prefix which is in the code. The
linked table name usualy omits this. .

Public Sub LinkSQLServerTables(strDSN As String, strDatabase)
On Error GoTo Err_LinkSQLServerTables

Dim dbs As Database, rs As Recordset, tdfAccess As TableDef
Dim dbsODBC As Database, strConnect As String

If strDSN = "" Then
MsgBox "You must supply a DSN in order to link tables."
Exit Sub
Else
strConnect = "ODBC;DSN=" & strDSN & ";UID=User;PWD=password;DATABASE=" &
strDatabase & ";"
End If

SysCmd acSysCmdSetStatus, "Connecting to SQL Server..."

Call DeleteODBCTableNames

Set dbs = CurrentDb
Set rs = dbs.OpenRecordset("tblODBCTables")
Set dbsODBC = OpenDatabase("", False, False, strConnect)

Do While Not rs.EOF
Set tdfAccess = dbs.CreateTableDef(rs![LinkTablename], dbAttachSavePWD)
tdfAccess.Connect = dbsODBC.Connect
tdfAccess.SourceTableName = dbsODBC.TableDefs("dbo." &
rs![LinkTablename]).Name
dbs.TableDefs.Append tdfAccess
rs.MoveNext
Loop

rs.Close
Set rs = Nothing
Set dbsODBC = Nothing
Set dbs = Nothing

Exit_LinkSQLServerTables:
SysCmd acSysCmdClearStatus
Exit Sub

Err_LinkSQLServerTables:
MsgBox ("Error # " & Str(Err.Number) & " was generated by " & Err.Source
& Chr(13) & Err.Description)
Resume Exit_LinkSQLServerTables

End Sub


'This procedure deletes all linked ODBC table names in an mdb.
Public Sub DeleteODBCTableNames()
On Error GoTo Err_DeleteODBCTableNames

Dim dbs As Database, tdf As TableDef, I As Integer
Set dbs = CurrentDb
For I = dbs.TableDefs.Count - 1 To 0 Step -1
Set tdf = dbs.TableDefs(I)
If (tdf.Attributes And dbAttachedODBC) Then
dbs.TableDefs.Delete (tdf.Name)
End If
Next I

dbs.Close
Set dbs = Nothing

Exit_DeleteODBCTableNames:
Exit Sub

Err_DeleteODBCTableNames:
MsgBox ("Error # " & Str(Err.Number) & " was generated by " & Err.Source
& Chr(13) & Err.Description)
Resume Exit_DeleteODBCTableNames

End Sub
 
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