Return ResultSet from update statement?

Question

I tried to return the id of the affected row I updated. I am wondering, why I don't get a ResultSet back from this (only primary key would be ok), eventhough I set Statement.RETURN_GENERATED_KEYS? I connect to a Microsoft SQL Server using the most recent jTDS driver 1.3.0.

    try
    {
        PreparedStatement pst = SQL.getConnection().prepareStatement(qry, Statement.RETURN_GENERATED_KEYS);

        pst.setString(1, someValue);
        pst.setString(2, someOtherValue);

        int affectedRows = pst.executeUpdate(); 
        System.out.println(affectedRows); //to make sure whether the query updated anything

        ResultSet rs = pst.getGeneratedKeys();

        if (rs.next())
        {
            System.out.println(rs.getInt(1));
        }
    } catch (Exception e) {
        e.printStacktTrace();
    }

Any suggestions here?

Answer 1

One workaround is to create a stored procedure and call it by using the CallableStatement method. Don't ask me why this works and not the other way though.

Answer 2

With SQL Server 2008 and later you can use an OUTPUT clause in your INSERT or UPDATE statement. See this answer for an example.