Re: Improve planner cost estimations for alternative subplans

Hi Tom,

sorry for the delay,
> I experimented with adding a number-of-evaluations parameter to
> cost_qual_eval, and found that the majority of call sites do have
> something realistic they can pass.  The attached very-much-WIP
> patch shows my results so far.  There's a lot of loose ends:
I like the idea, so if we alternative subplans remain there
I think we should implement it.

Best, Alex