my $sth = $dbh->prepare("SELECT * FROM results WHERE 1=0");
    $sth->execute;
    my @cols = @{$sth->{NAME}};
    shift @cols;
    my $avgSQL =
      'SELECT '
      . join(', ', map { "avg($_) \n" } @cols )
      . ' FROM results';
    my $avgsHashRef = $dbh->selectrow_hashref($avgSQL);