On Thu, Apr 27, 2017 at 7:53 PM, Marko Tiikkaja <ma...@joh.to> wrote: > On Thu, Apr 27, 2017 at 4:13 PM, Bruce Momjian <br...@momjian.us> wrote: >> >> On Thu, Apr 27, 2017 at 08:00:28AM +0530, Amit Kapila wrote: >> > > Oh, so non-correlated subqueries can be run in parallel. Yes, that is >> > > something we should have in the release notes. How is this? >> > > >> > > Author: Robert Haas <rh...@postgresql.org> >> > > 2017-02-14 [5e6d8d2bb] Allow parallel workers to execute >> > > subplans. >> > > >> > > Allow non-correlated subqueries to be run in parallel (Amit >> > > Kapila) >> > > >> > >> > Looks good to me. > > > It's not clear from this item what the previous behavior was. How about > adding something like "Correlated subqueries can not yet be parallelized."? > (I'm guessing that's the change, anyway, please correct me if I'm mistaken.) >
Previous to this change queries containing a reference to subplans (correlated or un-correlated) doesn't get parallelised. -- 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
