Simon Riggs <> writes:
> On 13 June 2016 at 19:16, Tom Lane <> 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

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