#!perl
use strict;
use DBI;
my $dbh = connect(..);

my %pivot=();
my $total;

my $sql = 'SELECT prod,count(*) FROM prod GROUP BY prod';
my $sth = $dbh->prepare($sql);
$sth->execute();
while (my @f = $sth->fetchrow_array){
  $pivot{$f[0] || 'null' } = $f[1];
  $total       += $f[1];
}	 
my @cols = sort keys %pivot;
unshift @cols,'total';
$pivot{'total'} = $total;

print sprintf "| %5s ",$_ for @cols;
print "|\n";
print sprintf "| %5d ",$pivot{$_} for @cols;
print "|\n";