Hello jjohhn ,

This might be a little 'quick and dirty' but it does what you want, using a hash : 

use strict ; 
use warnings ; 

my @file1 = ( 'A1|dog|', 'A2|cat|','A3|bird|' ) ; 
my @file2 = ( 'A1|Fido|','A2|Fluffy|','A3|Tweety|') ; 
my %rez ;

foreach  my $it (@file1) { 
my @input = split /\|/ , $it ;
$rez{$input[0]} = join "|" ,"", @input[1,] ;
}

foreach  my $it (@file2) { 
my @input = split /\|/ , $it ;
$rez{$input[0]} .= join "|" ,"", @input[1,] ;
}

print $_, $rez{$_}, "\n" foreach ( sort keys %rez )   ;

[download]
Hope this helps :)
zlr_

In reply to Re: combining 2 files with a comon field by ZlR
in thread combining 2 files with a comon field by jjohhn

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