Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> On Thu, 2008-06-26 at 13:42 -0400, Tom Lane wrote:
>> It might be possible to treat "ignore the RHS" as a join strategy and
>> try to apply it while forming join relations, which would be late enough
>> to have all the needed info available.
> Oh, actually have a join node that is a no-op, with a path cost of zero?
Not even that: just return the best path(s) for the LHS as the paths for
the joinrel.
regards, tom lane