do {
   my $row = $_read_sth->fetchrow_arrayref();
   print Dumper $row;
} while ($_read_sth->{syb_more_results});

##</code><code>##

while (my $row = $_read_sth->fetchrow_arrayref()) {
   print Dumper $row;
}

##</code><code>##

do {
   while (my $row = $sth->$_read_sth->fetchrow_arrayref()) {
      print Dumper $row;
   }
} while ($_read_sth->{syb_more_results});