dan@xxxxxxxxx escribió: > > dan@xxxxxxxxx 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 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
