** simple indexing
   :PROPERTIES:
   :DATE:     2011-09-01
   :END:
#+name: list-o-numbers
| 1 | 2 | 3 |
| 4 | 5 | 6 |
| 7 | 8 | 9 |

#+begin_src sh :var column=list-o-numbers[,0]
  echo $column
#+end_src

#+name:
: 1 4 7