Tom Lane writes:
> I suspect it would not work to re-use a query plan tree at multiple
> recursion levels (someday, plan trees should be read-only during
> execution, but they ain't now). As long as you are making a new
> plan tree for each recursive entry, it should work ...
ISTM that this is already what's happening. Each level gets a new plan
tree.
--
Peter Eisentraut peter_e(at)gmx(dot)net