Обсуждение: plan forcing in postgresql
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?
On Mon, Mar 17, 2014 at 10:53 AM, Rajmohan C <csrajmohan@gmail.com> 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? This thread is cross posted with -hackers. (the main discussion is there). merlin