Robert Haas <robertmhaas@gmail.com> writes:
> This looks like it's on the right track to me. I hope Tom will look
> into it, but if he doesn't I may try to get it committed myself.
I do plan to take a look at it during this CF.
> + /* Set or update cheapest_total_path and related fields */
> + set_cheapest(current_rel);
> I wonder if it's really OK to call set_cheapest() a second time for
> the same relation...
It's safe enough, we do it in some places already when converting
a relation to dummy. But having to do that in a normal code path
suggests that something's not right about the design ...
regards, tom lane
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