From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Peter Geoghegan <pg(at)heroku(dot)com> |
Cc: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Re: Reusing abbreviated keys during second pass of ordered [set] aggregates |
Date: | 2015-12-22 22:59:22 |
Message-ID: | CA+TgmoYQ8v2-SPHcxfM+4fuO2+rtemjGssW7jRTyK1D7dRy7rA@mail.gmail.com |
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On Tue, Dec 22, 2015 at 12:31 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Mon, Dec 21, 2015 at 2:55 PM, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
>> On Mon, Dec 21, 2015 at 10:53 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>> PFA my proposal for comment changes for 9.5 and master. This is based
>>> on your 0001, but I edited somewhat. Please let me know your
>>> thoughts. I am not willing to go further and rearrange actual code in
>>> 9.5 at this point; it just isn't necessary.
>>
>> Fine by me. But this revision hasn't made the important point at all
>> -- which is that 0002 is safe. That's a stronger guarantee than the
>> abbreviated key representation being pass-by-value.
>
> Right. I don't think that we should back-patch that stuff into 9.5.
OK, so I've gone ahead and committed and back-patched that. Can you
please rebase and repost the remainder as a 9.6 proposal?
Thanks,
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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