foreach $num_doc(@num_from_doc) {

# Now retrieve data from the table.

    $sth = $dbh->prepare('SELECT num FROM num_table WHERE num <> ?');    
    
    $sth->execute($num_doc);   

my $num_in_db = $sth->fetchrow_array();

print "**This $num_doc is not in the DataBase<br>";
print "Here is what I found: $num_in_db<br>";
}