Re: Re: [COMMITTERS] pgsql: Rewrite GEQO's gimme_tree function so that it always finds a

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re: [COMMITTERS] pgsql: Rewrite GEQO's gimme_tree function so that it always finds a
Date: 2009-11-09 18:10:11
Message-ID: 18402.1257790211@sss.pgh.pa.us
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Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Mon, Nov 9, 2009 at 10:57 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Too bad you don't have debug symbols ... it'd be interesting to see
>> how long that list is.

> I stopped it a couple of times. Lengths of list1, list2 respectively:

> 8876, 20
> 14649, 18
> 15334, 10
> 17148, 18
> 18173, 18

Yowza. 18000 distinct paths for one relation? Could we see the test
case?

regards, tom lane

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