Atri Sharma wrote > On Mon, Mar 17, 2014 at 9:22 PM, Rajmohan C <
> csrajmohan@ > > wrote: > >> I am implementing Planner hints in Postgresql to force the optimizer to >> select a particular plan for a query on request from sql input. I am >> having >> trouble in modifying the planner code. I want to create a path node of >> hint >> plan and make it the plan to be used by executor. How do I enforce this ? >> Should I create a new Plan for this ..how to create a plan node which can >> be then given directly to executor for a particular query? >> > > Planner hints have been discussed a lot before as well and AFAIK there is > a > wiki page that says why we shouldnt implement them. Have you referred to > them? > > Please share if you have any new points on the same. > > Regards, > > Atri http://wiki.postgresql.org/wiki/Todo (I got to it via the "FAQ" link on the homepage and the "Developer FAQ" section there-in. You should make sure you've scanned that as well.) Note the final section titled: "Features We Do Not Want" Also, you need to consider what you are doing when you cross-post (a bad thing generally) "-hackers" and "-novice". As there is, rightly IMO, no "-novice-hackers" list you should have probably just hit up "-general". Need to discuss the general "why" before any meaningful help on the "how" is going to be considered by hackers. David J. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Planner-hints-in-Postgresql-tp5796347p5796353.html Sent from the PostgreSQL - hackers mailing list archive at Nabble.com. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
