jeffa's proposal is probably the simplest, but your code would work if you change the relevant line to: 
push @{ $all }, @$data1, @$data2;

[download]
When I dump $all after this change, I get: 
$VAR1 = [
          {
            'NAME' => 'PAUL DY',
            'DATE' => '2009-05-05',
            'NUMBER' => '00001'
          },
          {
            'NAME' => 'ANTHONY RD',
            'DATE' => '2012-01-07',
            'NUMBER' => '00003'
          },
          {
            'CAR2' => '2',
            'CAR1' => '1',
            'CAR3' => '3'
          },
          {
            'CAR2' => '2b',
            'CAR1' => '1b',
            'CAR3' => '3b'
          }
        ];

[download]
i.e. presumably what you want.

In reply to Re: Combining two references by Laurent_R
in thread Combining two references by Anonymous Monk

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