It was a misunderstanding on my part. Here is my whole function, and I get an error about coercing an array into a hash.

        my @names = @{ $sth->{NAME} };
    my @ordered_values = ();
    my %xml_hash = ( dataset => [] );
    while ( my $row = $sth->fetchrow_arrayref ) {
        @ordered_values = @{$row}{@names};  <----Can't coerce array in
+to hash HERE
    }

    my $cgi = CGI->new;
    print $cgi->header('text/xml');    
    my $testxml = XMLout( \@ordered_values, NoAttr => 1, RootName => '
+dataset', );
    print $testxml;
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