On 2 November 2017 at 01:14, Alvaro Herrera <alvhe...@alvh.no-ip.org> wrote: > Nico Williams wrote: > >> As an aside, I'd like to be able to control which CTEs are view-like and >> which are table-like. In SQLite3, for example, they are all view-like, >> and the optimizer will act accordingly, whereas in PG they are all >> table-like, and thus optimizer barriers. > > There was a short and easy to grasp (OK, maybe not) discussion on the > topic of CTEs acting differently. I think the consensus is that for > CTEs that are read-only and do not use functions that aren't immutable, > they may be considered for inlining. > https://www.postgresql.org/message-id/5351711493487...@web53g.yandex.ru
Yep. All theoretical though, I don't think anyone (myself included) stumped up a patch. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
