Hello,

Please find attached the elisp-file and a tutorial (as an org-file) for org-babel-table-proc.

It provides some simple set-operations (mostly merge and intersect), which treat org-mode tables as sets.

An example for merging two tables would be:

> #+name: lower
> | 2 | b |
> | 4 | d |
> | 5 | e |
> | 6 | h |
>
> #+name: upper
> |  1 | A |
> |  3 | C |
> |  4 | D |
> | 10 | J |
> |  2 | B |
>
> #+begin_src emacs-lisp :var t1=lower :var t2=upper
>    (babel-table-proc-merge t1 t2)
> #+end_src
>
> #+results:
> |  1 |   | A |
> |  2 | b | B |
> |  3 |   | C |
> |  4 | d | D |
> |  5 | e |   |
> |  6 | h |   |
> | 10 |   | J |

which merges the two input tables lower and upper into a single table, even, if they do not have all
keys (from the first column) in common.
In general this merges information from two different sources without loosing anything.

The package org-babel-table-proc provides these and a few other operations, but definitely still needs
some debugging and polishing.

However, before finishing this work, I would like to ask, if something like this is already present
in babel or the library of babel ?

Also, I am not sure, which prefix to use for packages and functions; is org-babel-table-proc the right name or can
it be shortened to ob-table-proc.

Any input would be very welcome !

With kind regards, Marc-Oliver Ihm