sub getsqlvalue {
    my @results = ();
    my ($dbh,$sqlstatement)= @_;
    my $sth = $dbh->prepare($sqlstatement);
    my @row;
    $sth->execute || die "Could not execute MySQL statement: $sqlstatement";
    while (@row=$sth->fetchrow_array) { push(@results, [ @row ]); }
    $sth->finish();
    return $results[0][0];
}