David Rowley <david.row...@2ndquadrant.com> writes: > On 12 March 2016 at 11:43, Tom Lane <t...@sss.pgh.pa.us> wrote: >> It seems like the major intellectual complexity here is to figure out >> how to detect inner-side-unique at reasonable cost. I see that for >> LEFT joins you're caching that in the SpecialJoinInfos, which is probably >> fine. But for INNER joins it looks like you're just doing it over again >> for every candidate join, and that seems mighty expensive.
> I have a rough idea for this, but I need to think of it a bit more to > make sure it's bulletproof. Where are we on this? I had left it alone for awhile because I supposed that you were going to post a new patch, but it's been a couple weeks... regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers