$res = $dh->prepare($sql);
    $res->execute();

    my @dataset = ();
    # Iterate over result set building up the result set
    do {
        while (my $data = $res->fetch()) {
            if ($res->{syb_result_type} == CS_ROW_RESULT) {
                if (defined $data) {
                    @$data = map {$_ ||= ""} @$data;