Here's the code:

#! /usr/local/bin/perl
#
use DBI;
use DBD::CSV;

my($dh, $sh);
my($row);

$dh = DBI->connect("DBI:CSV:") ||
        die "Cannot connect: ". $DBI::errstr;
$dh->{'csv_tables'}->{'passwd'} = {
        'eol' => '\n',
        'sep_char' => ':',
        'quote_char' => undef,
        'escape_char' => undef,
        'file' => '/etc/passwd',
        'col_names' => ["login", "password", "uid", "gid", "gecos",
                        "dir", "shell"]
};

$sh = $dh->prepare("SELECT * FROM passwd") ||
        die "Cannot prepare: ". $dh->errstr();

$sh->execute() || die "Cannot execute: ". $sh->errstr();

while ($row = $sh->fetch) {
        printf "%s\n", $row;
}
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Data is the /etc/passwd file at work which, for obvious reasons, I cannot post here.

Suffice to say it is a file of greater than one line consisting of records of the format:

user:*:[0-9]+:[0-9]+:Real Name:/dir:/path/to/shell
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The output I get is the first row in the passwd file and no more.