Re: [HACKERS] Bushy Plans fixed

> Bruce Momjian wrote:
> > 
> > > > Frankly, I would like to enable bushy plans and right-handed plans by
> > > > default.  The optimizer is now fast enough that a 9-table join is almost
> > > > instantaneous, even with bush plans.  People are not sophisticated
> > > > enough to know when to enables these options themselves. I am not sure I
> > > > am either.  I would like to enables both, fix whatever breaks, and
> > > > programmatically enable the options when they make sense.
> > >
> > > We need not in right-sided plans code any more.
> > > I agreed that we should enable bushes by default.
> > 
> > Are you saying right-hand plans are not useful if we have bushy plans?
> > If so, I will remove the right-hand code.
> 
> I mean that bushes should be able to produce right-sided plans.
> So - remove right-sided coded.

The bushy code joined joined relations, not base relations.  Currently,
base relations are always inner without right-hand plans.  See
make_rels_by_clause_joins() and let me know what needs to be changed, or
feel free to modify it yourself.  I will check your modifications.


--  Bruce Momjian                        |  http://www.op.net/~candle maillist@candle.pha.pa.us            |  (610)
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