Hello, Merlin.
I hope it's OK that I've added Andrew's patch to CommitFest:
https://commitfest.postgresql.org/action/patch_view?id=606
I did this becuase beta3 already released, but nut nothig is done on
this bug.
You wrote:
MM> On Thu, Jun 23, 2011 at 7:54 AM, Andrew Chernow <ac@esilo.com> wrote:
>>> you are creating as you iterate through. This behavior was
>>> unnecessary in terms of what libpqtypes and friends needed and may (as
>>> Tom suggested) come back to bite us at some point. As it turns out,
>>> PQsetvalue's operation on results that weren't created via
>>> PQmakeEmptyResult was totally busted because of the bug, so we have a
>>> unique opportunity to tinker with libpq here: you could argue that you
>>>
>>> +1
>>>
>>> Exactly at this moment I am thinking about using modifiable
>>> (via PQsetvalue) PGresult instead of std::map in my C++ library
>>> for store parameters for binding to executing command.
>>> I am already designed how to implement it, and I supposed that
>>> PQsetvalue is intended to work with any PGresult and not only
>>> with those which has been created via PQmakeEmptyResult...
>>> So, I am absolutely sure, that PQsetvalue should works with
>>> any PGresult.
>>
>> All PGresults are created via PQmakeEmptyPGresult, including libpqtypes.
>> Actually, libpqtypes calls PQcopyResult which calls PQmakeEmptyPGresult.
>>
>> It might be better to say a "server" result vs. a "client" result.
>> Currently, PQsetvalue is broken when provided a "server" generated result.
MM> er, right-- the divergence was in how the tuples were getting added --
MM> thanks for the clarification. essentially your attached patch fixes
MM> that divergence.
MM> merlin
--
With best wishes,Pavel mailto:pavel@gf.microolap.com
