It looks easier with a hash 
#!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";

[download]
Note ; This assumes you don't have a prod called 'total'.
poj

In reply to Re^2: return string from query (DBI, MySQL) got truncated when trying to generating statement dynamically for MySQL by poj
in thread return string from query (DBI, MySQL) got truncated when trying to generating statement dynamically for MySQL by khandielas

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