sub getNullEndIds{
    my $self = shift;
    my $dbh = DBI->connect($dbi,"monster_mirror","m1rr0r",{'RaiseError' => 1});
    my $sth = $dbh->prepare("SELECT id from high where end IS NULL");
    $sth->execute();
    my @id;
    while(my @dummy = $sth->fetchrow_array()){
        push(@id,$dummy[0]);
    }
    $sth->finish();
    $dbh->disconnect();
    return @id;
}