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Re: [patch] libpq one-row-at-a-time API

From: Merlin Moncure <mmoncure(at)gmail(dot)com>
To: Marko Kreen <markokr(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Postgres Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [patch] libpq one-row-at-a-time API
Date: 2012-07-25 00:06:46
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Lists: pgsql-hackers
On Tuesday, July 24, 2012, Marko Kreen <markokr(at)gmail(dot)com> wrote:
> On Wed, Jul 25, 2012 at 1:29 AM, Merlin Moncure <mmoncure(at)gmail(dot)com>
>> On Tue, Jul 24, 2012 at 4:59 PM, Marko Kreen <markokr(at)gmail(dot)com> wrote:
>>> So if we give only PQgetResult() in 9.2, I do not see that we
>>> are locked out from any interesting optimizations.
>> Well, you are locked out of having PQgetResult reuse the conn's result
>> since that would then introduce potentially breaking changes to user
>> code.
> You can specify special flags to PQsend or have special PQgetResultWeird()
> calls to get PGresults with unusual behavior.  Like I did with
> I see no reason here to reject PQgetResult() that returns normal PGresult.

Yeah -- I agree.  So, given the scheduling, I think we should go with
non-PQgetRowData patch and reserve optimized path for 9.3.


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