Le samedi 7 juin 2014 09:09:00 Gurjeet Singh a écrit : > On Sat, Jun 7, 2014 at 8:56 AM, Cédric Villemain <ced...@2ndquadrant.com> wrote: > > Le samedi 7 juin 2014 08:35:27 Gurjeet Singh a écrit : > >> PS: Please note that I am not proposing to add support for the > >> optimizer hint embedded in Mitsuru's query. > >> > > :-) > > Even though I (sometimes) favor hints, and developed the optimizer > hints feature in EDB (PPAS), I know how much Postgres **hates** [1] > optimizer hints :) So just trying to wade off potential flamewar-ish > comments.
There is a large benefits to users in preventing HINT in core: it makes it mandatory for PostgreSQL to keep improving, and it makes it mandatory for developers to find solutions around this constraint. There is at least planner_hint contribution (search Oleg website), and added to a postgresql hook on the parser you're done implementing HINT in userland. I'm not arguing pro/cons about the feature (as you said the question has been answered already) but arguing that arbitrary constraints challenge us and produces good things for PostgreSQL in return. -- Cédric Villemain +33 (0)6 20 30 22 52 http://2ndQuadrant.fr/ PostgreSQL: Support 24x7 - Développement, Expertise et Formation
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