Great thread. Seems the answer to my question is as followed ---

my @accounts = @{$dbh->selectcol_arrayref("SELECT `UserName` FROM Acco
+unt a, asscAccountAccountGroup aaag, asscRoleAccountGroup arag, Role 
+r WHERE a.Id = aaag.AccountId AND aaag.AccountGroupId = arag.AccountG
+roupId AND arag.RoleId = r.Id AND r.Name = 'ROLE_REVIEWER'")};

print join("\n",@accounts);
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Thanks again for pointing me in the right direction

If you don't really need the entire list of results in an array, you can just fetch one at a time like so:

my $sth = $dbh->prepare($sql);
$sth->execute();
$sth->bind_col( 1, \my $user_name );
while ( $sth->fetch() ) {
  print "$user_name\n";
}
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