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VBA Code to Add Linked Table with Primary Key

I have an updatable view in sql server database. When I create linked table to it with ODBC, I'm asked to select unique record identifier, in order for it to be updateable.

Dialog in the wizard to select unique identifier

I need to dynamically relink this table in VBA, so I need to drop and recreate the linked table (I cannot update the TableDef.Connect property for ODBC table).

I found several solutions, which are not applicable in my case:

  • create the index after linking: I cannot for ODBC source
  • create the primary key in database: I cannot, it's a view

These would be applicable:

  • a code which will do what the wizard does
  • a code to relink without the need to delete TableDef and that works with ODBC linked table, and will not reset previously set identifier

Temporary workaround:

  • convert the view to materialized view and create unique index on it
like image 461
Oliv Avatar asked Mar 07 '12 13:03

Oliv


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How do you create a linked table?

In the File name text box, type the name of the source database or click Browse to display the File Open dialog box. Click Link to the data source by creating a linked table, and then click OK. The Link Tables dialog box opens. In the Link Tables dialog box, select the tables you want to link to.


1 Answers

Why can't you create an index for an ODBC source after linking?

At work, we are using Access with linked SQL Server tables, and when someone wants to connect to a different database (change from production environment to test environment), we do something like this for all tables:

Dim TD As TableDef
Dim ConString As String

ConString = "ODBC;DRIVER={SQL Server};SERVER=ServerName;DATABASE=DbName;Trusted_Connection=Yes;"

CurrentDb.TableDefs.Delete "SomeTable"

Set TD = CurrentDb.CreateTableDef("SomeTable", 0, "SomeTable", ConString)
CurrentDb.TableDefs.Append TD
Set TD = Nothing

CurrentDb.Execute "CREATE UNIQUE INDEX SomeIndex ON SomeTable (PrimaryKeyColumn) WITH PRIMARY"
like image 162
Christian Specht Avatar answered Oct 18 '22 16:10

Christian Specht