> Can you please post an example of such a join removal? I mean a query before > and after the removal. Thanks,
Courtesy Robert Haas: SELECT foo.x, foo.y, foo.z FROM foo WHERE foo.x = bar.x Conditions: 1) foo.x is not null. 2) foo (x) is a foreign key referencing bar (x). We can ignore bar completely in this case i.e. avoid scanning bar. Regards, Atri -- Regards, Atri l'apprenant -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
