Re: Rewrite, normal execution vs. EXPLAIN ANALYZE

Tom Lane wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
> > On Wed, Aug 4, 2010 at 2:45 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> >> I seriously doubt that there are many applications out there that are
> >> actually depending on this aspect of rule execution; if anything, there
> >> are probably more that will see it as a bug.
> 
> > Changing EXPLAIN ANALYZE seems a bit less likely to break things for
> > anyone depending on current behavior;
> 
> Well, the point I was trying to make is that there may well be fewer
> people depending on the current behavior than there are people for whom
> the current behavior is wrong, only they don't know it because they've
> not seen a failure (or not seen one often enough to diagnose what's
> happening).
> 
> This is of course merest speculation either way.  But I don't feel that
> we need to necessarily treat rule behavior as graven in stone.

Where are we on this?  It seems it is an issue independent of writable
common table expressions (wCTEs).

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +