Re: WIP: Upper planner pathification

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.
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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