Unexpected Result in Windowing

Folks,

Robert Treat brought this up.

I create a table with something to partition by, and some meaningless
junk. I'm trying to get a random ordering inside each window:

CREATE TABLE foo(i, t) AS
SELECT i, md5((i*generate_series(1,10))::text) /* Nonsense text */
FROM generate_series(10,1) i;

SELECT
i,
t,
RANK() OVER (
PARTITION BY i
ORDER BY random()
)
FROM foo;
ERROR: ORDER/GROUP BY expression not found in targetlist

Oops. I found this error message only in backend/optimizer/util/tlist.c
and am wondering whether there needs to be a different code path for
windowing, or...?

Any ideas?

Cheers,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter
Skype: davidfetter XMPP: david(dot)fetter(at)gmail(dot)com

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