On Sun, Dec 08, 2002 at 05:28:22PM -0500, Tom Lane wrote:
>
> Well, you could dig through backend/executor/node*.c and see which of
> the node types pay attention to es_direction. To a first approximation
> it looks like these do:
I'll be honest with you: I don't know much about the internals and this
is pure Greek to me... And I never was much good at Greek in school.
> although I have not thought about which other upper plan nodes might be
> okay (ie, they're safe if their input nodes are). Also, a Material or
> Sort node will hide any direction-unsafety in its input.
More Greek, I'm afraid. :-(
Jeroen
