>> Possibly worth noting is that in past discussions, we've concluded that >> the most sensible type of hint would not be "use this plan" at all, but >> "here's what to assume about the selectivity of this WHERE clause". >> That seems considerably less likely to break than any attempt to directly >> specify plan details.
> Isnt using a user given value for selectivity a pretty risky situation as > it can horribly screw up the plan selection?
And forcing a plan to be used *isn't* that? Please re-read the older threads, since you evidently have not.
I never said that we force a plan to be used. I just said that we should increase the preference for a user given plan and not interfere in the cost estimation of the other potential plans and the evaluation of the final selected plan.
