On Thu, Oct 5, 2017 at 6:08 PM, Robert Haas <robertmh...@gmail.com> wrote: > On Thu, Oct 5, 2017 at 5:52 AM, Amit Kapila <amit.kapil...@gmail.com> wrote: >> Now, unless, I am missing something here, it won't be possible to >> detect params in such cases during forming of join rels and hence we >> need the tests in generate_gather_paths. Let me know if I am missing >> something in this context or if you have any better ideas to make it >> work? > > Hmm, in a case like this, I think we shouldn't need to detect it. The > Var is perfectly parallel-safe, the problem is that we can't use a > not-safe plan for the inner rel. I wonder why that's happening > here... >
It is because the inner rel (Result Path) contains a reference to a param which appears to be at the same query level. Basically due to changes in max_parallel_hazard_walker(). -- With Regards, Amit Kapila. EnterpriseDB: http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
