> Thanks, but the join clause is there, it's just buried in the subqueries.
>
> If there is a problem, it is probably that the loop never ends.
>
> Or it could be that the answer is exponential, and I just have too many
> rows in the source table and too deep a graph.
>
> I figured out how to do it in the application with one call to the
> database and a simple recursive method in a class, though, so I'm not
> going to use a stored function in the DB.
If you have figured it out this way you can even use one of the
PL/languages to implement it within the database :-)
Cheers
Tino
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