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  1. or download this
    $Records{'1'}{'Meta'}{'Name'} = 'Alice';
    $Records{'1'}{'Packages'}{'PackageID'} = 1;
    $Records{'2'}{'Meta'}{'Name'} = 'Bob';
    $Records{'2'}{'Packages'}{'PackageID'} = 1;
    
  2. or download this
    my @sorted =
       map $_->[0],                            # transform pairs back into
    + ids
       sort { $a->[1] cmp $b->[1] }            # sort by name
       map [ $_, $Records{$_}{Meta}{Name} ],   # transform into [id, name]
    + pairs
       keys %Records;                          # list of customer ids