Obligatory one-liner: 
perl -F: -lane "$F[0] eq  q|T| and $team=$F[1]; $F[0] eq q|P| and $h{$
+team}{$F[1]}++}{for my $t(sort keys %h){print $t, qq|\t\[|, join( qq|
+, |, sort keys %{$h{$t}}),qq|\]|}" Your-Data.txt
MARINERS        [GRIFFEY, PEREZ]
PHILLIES        [ROSE]
REDS    [BENCH, GRIFFEY, PEREZ, ROSE]

[download]
Substitute single quotes for double, if running on Linux.

                "From there to here, from here to there, funny things are everywhere." -- Dr. Seuss

In reply to Re: Unique Values within AOH by NetWallah
in thread Unique Values within AOH by dirtdog

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