Simon Riggs <si...@2ndquadrant.com> writes: > On 13 June 2016 at 19:16, Tom Lane <t...@sss.pgh.pa.us> wrote: >> Another point here is that I'm now unconvinced that restricting the logic >> to consider only multi-column fkeys is really what we want. It looks to >> me like the code can also improve estimates in the case where there are >> multiple single-column FKs linking to the same target relation. That >> might not be too common for two-table queries, but I bet it happens a >> lot in three-or-more-table queries.
> Is it realistic that we consider that at this point? Certainly not for > myself, at least. It's pretty much built into the redesign I proposed, or so I thought. 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