Debian 9.6 - perl 5.24.1 - UNSIGNED ZEROFILL

sub region {
 my $return;
 $text_quest = "
  SELECT region_id, $DATA{'LANGUAGE'}_region_name 
  FROM address_region
  WHERE
  id_country = $country AND
  region_act > 0
  GROUP BY region_id
 ";
 $sth = $dbh->prepare($text_quest);
 $sth->execute();

 if ($sth->err) {
  $return .= "Ошибка catalog_region_cat " . $sth->errstr;
 }
	
 $sth->bind_col( 1, \$region_id_tmp );
 $sth->bind_col( 2, \$name_tmp );
	
 while ( $sth->fetch ) {

# Костыль для решения, но таких мест много...
#     if ($region_id_tmp =~ /^\d$/) {
#        $region_id_tmp = '0' . $region_id_tmp;
#     }
	
  $return .= "<p><a title=\"$title_tmp\"   href=\"http://$DATA{'LANGUAGE'}.$DATA{'HOST_NAME'}/$_[1]?country=$country&amp;region=$region_id_tmp\"><span>$name_tmp</span></a></p>\n";

 }
 $sth->finish();
 return $return; 
}

$sth->bind_param(1, $date, SQL_DATE);
$sth->bind_param(2, $n, SQL_INTEGER);

$sth->bind_col( 1, \$region_id_tmp, SQL_STRING );