Re: Coster/planner and edge cases...

Michael Loftis <mloftis@wgops.com> writes:
> IE I'd like to have the information come back as say a notice or maybe 
> as extra information for an EXPLAIN for my purposes, but unless there is 
> interest, consensus on how it should be done, and a TODO item made of 
> it, I won't be making a patch of that, no reason to clutter the backend 
> with stuff that hopefully won't be needed for long :)

I think it'd be useful to have, actually, as long as we're not talking
about much code bloat.  I tend to try to find a way to see what I want
with EXPLAIN, because using OPTIMIZER_DEBUG is such a pain.  But it's
often difficult to force the plan I'm interested in to rise to the top.
A nicer user interface for looking at the rejected alternatives would
seem like a step forward to me, whether or not ordinary users have any
need for it...
        regards, tom lane