Re: WITH RECURSIVE patch V0.1

On Sun, May 18, 2008 at 08:51:29PM +0900, Tatsuo Ishii wrote:
> WITH RECURSIVE patch V0.1
>
> Here are patches to implement WITH RECURSIVE clause. There are some
> limitiations and TODO items(see the "Current limitations" section
> below). Comments are welcome.
>
> 1. Credit
>
> These patches were developed by Yoshiyuki Asaba (y-asab(at)sraoss(dot)co(dot)jp)
> with some discussions with Tatsuo Ishii (ishii(at)sraoss(dot)co(dot)jp).

This is really great! Kudos to all who made this happen :)

I tried a bunch of different queries, and so far, only these two
haven't worked. Any ideas what I'm doing wrong here?

WITH RECURSIVE t(n) AS (
SELECT 1
UNION ALL
SELECT n+1
FROM t
WHERE n < 100
)
SELECT * FROM t;
ERROR: cannot extract attribute from empty tuple slot

WITH RECURSIVE t(n) AS (
VALUES (1)
UNION ALL
SELECT n+1
FROM t
WHERE n < 100
)
SELECT * FROM t;
ERROR: cannot extract attribute from empty tuple slot

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

Remember to vote!
Consider donating to Postgres: http://www.postgresql.org/about/donate