title: SQL full join without any conditions
body: <p>I am using MS SQL.<br>
  I have the following tables:</p>
  
  <pre><code>table A:
      id1   data1
      8234    ko
      2       po
      333     koo
      40      woo
  
  table B:
      id2     data2
      123     meow
      654     frrr
  
  table C:
      id3     data3
      10          a
      20          b
      30          c
      40          d
      50          e   
      60          f
  </code></pre>
  
  <p>I want to get this:</p>
  
  <pre><code>    id1     data1       id2     data2       id3     data3
      8234    ko          123      meow        10         a
      2       po          654      frrr        20         b
      333     koo         NULL     NULL        30         c
      40      woo         NULL     NULL        40         d
      NULL    NULL        NULL     NULL        50         e
      NULL    NULL        NULL     NULL        60         f
  </code></pre>
  
  <p>It's seems like full sum of tables without any conditions. I just want to get all columns and all data from all tables as is.<br>How can I do this?
  UPD: tables are not related. <br>
  In case when tables are related: I would use LEFT or RIGHT JOIN, when it was known in advance what table is larger than. But it is unknown.</p>