Re: Trying to track down weird query stalls

dan@sidhe.org escribió:
> > dan@sidhe.org escribió:
> >
> >> where libinstance.libdate <= 1238445044
> >>    and libinstance.enddate > 1238445044
> >>    and libinstance.libinstanceid = libobject.libinstanceid
> >>    and libinstance.architecture = ?
> >
> > How are you generating the explain?  My bet is that you're just
> > substituting a literal in the architecture condition, but if the driver
> > is smart then maybe it's preparating the query beforehand.  You'll get a
> > different plan in that case.
>
> I don't think so. Perl's DBI is involved, but the statement's in a
> variable.

So what's the "?" in the query you pasted earlier?

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support