I can do it with multi lines (below). But I'd really like to do it in one, without the foreach ($names is an arrayref of hashes): 
my @ids; 

foreach my $a (@{ $names }) {

   push(@ids,$a->{id});
}

my $ids = join(",", @ids);

[download]
Thanks!

In reply to Joining the hash values of an array of hashes by Rodster001

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