How to get items with all of its revisions with maximum generation

Thanks Christopher. This looks to be a simple. However if the latest generation is released, then the combined query will fail as latest revision is_released = '1'. so, second query might return no records.

<AML>
  <Item type="Part" action="get" select="item_number,generation,major_rev">
  <item_number>TESTPART1</item_number>
  <generation condition="gt">1</generation>
  <is_released>1</is_released>
  </Item>
  <Item type="Part" action="get" select="item_number,generation,major_rev">
  <item_number>TESTPART1</item_number>
  <is_released>0</is_released>
  </Item>
</AML>