in reply to Identifying unmatched data in a database

open(FILE, "<try"); while (my $line = <$try>) {

You are opening FILE but trying to read from an unopened file handle $try.

update

Should be added that you either didn't care to tell us the error messages you got or - what I rather fear - you never tried to run it.

That's not the way we are handling this here :(

Cheers Rolf

(addicted to the Perl Programming Language)