On Fri, Jan 27, 2017 at 11:44 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> I'm afraid though that we may have to do something about the
> irrelevant-joinquals issue in order for this to be of much real-world
> use for inner joins.

Maybe, but it's certainly not the case that all inner joins are highly
selective.  There are plenty of inner joins in real-world applications
where the join product is 10% or 20% or 50% of the size of the larger
input.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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