Etsuro Fujita <> writes:
> On 2016/07/15 11:48, Tom Lane wrote:
>> If we add a mechanism to let us know that the FDW doesn't care, we could
>> relax the requirement for such cases.  I don't have a strong opinion on
>> whether that's worthwhile.  It'd depend in part on how many FDWs there
>> are that don't care, versus those that do; and I have no idea about that.

> So, I'd vote for leaving that for future work if necessary.

Makes sense to me.

> Here is a patch for that redesign proposed by you; reverts commits  
> fbe5a3fb73102c2cfec11aaaa4a67943f4474383 and  
> 5d4171d1c70edfe3e9be1de9e66603af28e3afe1, adds changes for that redesign  
> to the core, and adjusts the postgres_fdw code to that changes.  Also, I  
> rearranged the postgres_fdw regression tests to match that changes.

OK, I'll review this later today.

                        regards, tom lane

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