I used DBD::CSV to make a small table containing IDs, category names and parent categories. Hopefully you can adapt this to your needs.

Code 
#! /usr/bin/perl

use strict ;
use warnings ;
$|++ ;

use DBI ;

my $cat_id = 11 ;

my $dbh = DBI->connect( "DBI:CSV:f_dir=.;csv_eol=\n" )
    or die "Cannot connect: " . $DBI::errstr ;

my $sth = $dbh->prepare( "SELECT * from categories where id = ?" )
    or die "Cannot prepare statement: " . $DBI::errstr ;

print cat_list( $sth, $cat_id ), "\n" ;

sub cat_list
{
    my ( $sth, $cat_id ) = @_ ;

    $sth->execute( "$cat_id" )
        or die "Cannot execute statement: " . $DBI::errstr ;

    my $data = $sth->fetchrow_hashref
        or die "No record found for category " . $cat_id ;

    return $data->{'parent'} == 0
           ? $data->{'name'}
           : cat_list( $sth, $data->{'parent'} )
             . '->'
             . $data->{'name'} ;
}



__END__

[download]
categories 
id,name,parent
1,Catalogue,0
10,Trucks,1
20,Snowmobiles,1
11,Parts,10
12,Accessories,10
21,Parts,20
22,Clothing,20

[download]

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In reply to Re: Looping through a subrouting by DamnDirtyApe
in thread Looping through a subrouting by Anonymous Monk

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