You can also write the function in plpython. Plpython
has the concept of a statement duration data dictionary.
Since the calls are recursive they should all be in the same
SQL statement duration. This is also a very handy way
to write running sums, etc.
elein@norcov.com
On Thursday 07 November 2002 18:38, Hadley Willan wrote:
> Gudday' all.
>
> In plpgsql, I've written a function that can call itself if
> necessary and thus recurse down to the bottom of a tree, operate on
> bottom node, then as it comes out, operate on each node, until
> eventually it gets to the top again.
>
> However, is there any system variable that I can check to see if this
> function has just been called for the first time or if this is the nTH
> call from itself?
>
> Thanks.
