Re: [Bug] Inconsistent result for inheritance and FOR UPDATE. - Mailing list pgsql-hackers

From Etsuro Fujita
Subject Re: [Bug] Inconsistent result for inheritance and FOR UPDATE.
Date
Msg-id 548A540C.8050200@lab.ntt.co.jp
Whole thread Raw
In response to Re: [Bug] Inconsistent result for inheritance and FOR UPDATE.  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: [Bug] Inconsistent result for inheritance and FOR UPDATE.  (Etsuro Fujita <fujita.etsuro@lab.ntt.co.jp>)
List pgsql-hackers
(2014/12/12 11:19), Tom Lane wrote:
> Etsuro Fujita <fujita.etsuro@lab.ntt.co.jp> writes:
>> (2014/12/12 10:37), Tom Lane wrote:
>>> Yeah, this is clearly a thinko: really, nothing in the planner should
>>> be using get_parse_rowmark().  I looked around for other errors of the
>>> same type and found that postgresGetForeignPlan() is also using
>>> get_parse_rowmark().  While that's harmless at the moment because we
>>> don't support foreign tables as children, it's still wrong.  Will
>>> fix that too.
> 
>> I don't think we need to fix that too.  In order to support that, I'm
>> proposing to modify postgresGetForeignPlan() in the following way [1]
>> (see fdw-inh-5.patch).
> 
> My goodness, that's ugly.  And it's still wrong, because this is planner
> code so it shouldn't be using get_parse_rowmark at all.  The whole point
> here is that the rowmark info has been transformed into something
> appropriate for the planner to use.  While that transformation is
> relatively trivial today, it might not always be so.

OK, I'll update the inheritance patch on top of the revison you'll make.

Thanks,

Best regards,
Etsuro Fujita



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