Re: enable_indexonly

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Thom Brown <thom(at)linux(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: enable_indexonly
Date: 2012-04-27 15:45:00
Message-ID: CA+U5nM+qvJj+VKpZv2xWRKA=uoKaRVoSySgkungw67rE50NdpA@mail.gmail.com
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On Fri, Apr 27, 2012 at 4:41 PM, Thom Brown <thom(at)linux(dot)com> wrote:
> On 27 April 2012 16:08, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
>> I notice that there isn't a parameter called enable_indexonly (or similar).
>>
>> ISTM that such a major new feature should be controlled by a planner
>> method parameter, just as all the existing planner methods are.
>>
>> This will help us evaluate index only scans in production, and turn
>> them off if they have negative impacts.
>
> It already exists and is called "enable_indexonlyscan".

Hmm. Forgive me, I pressed the wrong button and looked at current docs
rather than dev docs.

(Easier when they used to look different...)

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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