| From: | "Jeroen T(dot) Vermeulen" <jtv(at)xs4all(dot)nl> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: More on cursors in 7.3 |
| Date: | 2002-12-08 22:58:14 |
| Message-ID: | 20021208225814.GH68172@xs4all.nl |
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| Lists: | pgsql-hackers |
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
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