#!/usr/bin/perl

use strict;
use warnings;


# substituted for the FILE
my @file2 = qw(789|efg|2222222 123|abc|9999999 786|uvw|1234567 123|xxx|0000000 234|cde|0000000 567|xyz|1111111);


# process file 1

my %file_1_hash = ();

while ( <DATA> ) {
  chomp;
  my @array = split( /\|/ );
  $file_1_hash{join( '|', @array[0..$#array-1] )} = $array[$#array];
}

# when file2 is a FILE, just do a while loop here

foreach (@file2) {
  my @file_2_array = split( /\|/ );
  my $file_2_key = join( '|', @file_2_array[0..$#file_2_array-1] );

  if ( !exists $file_1_hash{$file_2_key} ) {
    $file_1_hash{$file_2_key} = "NO MATCH";
  }

  print join( '|', $file_2_key, $file_2_array[$#file_2_array], $file_1_hash{$file_2_key} ), "\n";
}

__DATA__
123|abc|777
234|cde|456
567|xyz|999