Re: WIP: Upper planner pathification

On Mon, Mar 21, 2016 at 7:55 AM, Jim Nasby <Jim.Nasby@bluetreble.com> wrote:
> On 3/17/16 9:01 AM, Robert Haas wrote:
>>
>> I think that
>> there are an awful lot of cases where extension authors haven't been
>> able to quite do what they want to do without core changes because
>> they couldn't get control in quite the right place; or they could do
>> it but they had to cut-and-paste a lot of code.
>
> FWIW, I've certainly run into this at least once, maybe twice. The case I
> can think of offhand is doing function resolution with variant. I don't
> remember the details anymore, but my recollection is that to get what I
> needed I would have needed to copy huge swaths of the rewrite code.

Amen, I have been doing that a couple of days ago with some elog stuff.
-- 
Michael