Select Code to Download

id    fname    lname
1     Joe      Smith
2     Sally    Smith

use DBI;
$dbh = DBI->connect("DBI:CSV:f_dir=./");
...
}

print Dumper(\%hash);

$VAR1 = {
          '' => undef
        };

$VAR1 = {
            {
...
              'lname' => 'Smith'
            {
        };