Horton

Re: Path question

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Hans-Jürgen Schönig <hs@cybertec.at>, Greg Stark <gsstark@mit.edu>, Boszormenyi Zoltan <zb@cybertec.at>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2010-09-25T02:23:07Z
Lists: pgsql-hackers 
On Fri, Sep 24, 2010 at 5:05 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> It's not that hard if you just tweak equivclass.c to make the order of
> equivalence-class lists different, viz
[...]
> Since the order of equivalence-class member lists isn't supposed to be
> semantically significant, I claim that the code in createplan has to
> be able to deal with this.
[...]
> That's not a reason for it not to handle
> the case, though.

I'm not disputing that those tests are correct.  All I'm saying is
that I can't figure out a way to write regression tests that fail if
they are removed.

-- 
Robert Haas
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