On Fri, May 25, 2018 at 1:53 PM, Amit Langote <amitlangot...@gmail.com> wrote: > Seems here that we call find_appinfos_by_relids here for *all* > partitions, even if all but one partition may have been pruned. I > haven't studied this code in detail, but I suspect it might be > unnecessary, although I might be wrong.
Uggh. It might be possible to skip it for dummy children. That would leave the dummy child rels generating a different pathtarget than the non-dummy children, but I guess if we never use them again maybe it wouldn't matter. > Fwiw, I'm not sure why the new pruning code would call here, at least > git grep find_appinfos_by_relids doesn't turn up anything interesting > in that regard. Hmm, OK. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
