On Thu, Mar 17, 2016 at 4:22 PM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> Robert Haas <robertmh...@gmail.com> writes:
>> On Thu, Mar 17, 2016 at 2:31 PM, Tom Lane <t...@sss.pgh.pa.us> wrote:
>>> Also, I don't particularly see a need for a corresponding API for FDWs.
>>> If an FDW is going to do anything in this space, it presumably has to
>>> build up ForeignPaths for all the steps anyway. So I'd be inclined
>>> to leave GetForeignUpperPaths as-is.
>> No idea if that is going to be a significant limitation or not.
>> Doesn't seem like it should be, but what do I know?
> Well, to my mind the GetForeignUpperPaths API is meant to handle the
> common case efficiently. An FDW that's not happy with that can always
> get into the create_upper_paths_hook instead.
OK - sold.
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