El mié, 11-01-2012 a las 10:40 -0500, Tom Lane escribió:
> Gerardo Herzig <gherzig@fmed.uba.ar> writes:
> > Hi all. Im working on a 'simple' query with 7, 8 left joins. After the
> > 9nth join or so, explain analyze became to show the plan with many
> > tables being read in sequential fashion. Of course, this slows down the
> > query response in a factor on 10.
>
> increase join_collapse_limit, perhaps?
>
> regards, tom lane
>
Im sory Tom and all, again stuck with this. Now i have 9 joins, and
join_collapse_limit = 20, and the query slows down big time when the 9th
join appears.
Another configuration variable to check against?
Thanks again.
Gerardo
