Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Tue, Sep 19, 2017 at 3:18 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> That's certainly a case that we ought to support somehow. The problem is
>> staying reasonably consistent with the two-decades-old precedent of the
>> existing behavior for one target variable.
> My point is that you objected to Pavel's proposal saying "it's not
> clear whether users want A or B". But I think they always want A.
I'm not sure if that's true or not. I am sure, though, that since
we've done B for twenty years we can't just summarily change to A.
regards, tom lane