sub FETCH {
    my $self = shift;

    # Just passing...
    if ( justPassingTheValue() ) {
        return $self;
    }

    # Value is being used in some expression
    # Now evaluate the real thing...
    $self->{sth}->execute();
    my $row = $self->{sth}->fetchrow_arrayref;
    $self->{sth}->finish();
    return $row->[0];
}