while (my @row = $queryHandle->fetchrow) {

my $reftype = ref $row[0];

# now see if it's an array, if so see it's scalar count
if ($reftype eq 'ARRAY'){
    my $count = scalar $reftype;
}

# now loop thru all the array by $count
foreach my $cnt( 0.. $count){

     $dude2->insert("end", $row[0][$count] );
     ...
     ....
}
.....
.....
}