Robert Haas <robertmh...@gmail.com> writes: > On Sun, Mar 13, 2016 at 10:51 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: >> I'm not really sold on enforcing that people create meaningless user >> mappings. For one thing, they're likely to be sloppy about it, which >> could lead to latent security problems if the FDW later acquires a >> concept that user mappings mean something.
> I think we should just fix build_simple_rel() so that it doesn't fail > if there is no user mapping. It can just set rel->umid to InvalidOid > in that case, and if necessary we can adjust the code elsewhere to > tolerate that. This wasn't an intentional behavior change, and I > think we should just put things back to the way they were. So, allow rel->umid to be InvalidOid if there's no user mapping, and when dealing with a join, allow combining when both sides have InvalidOid? regards, tom lane -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers