From: | Doug Hunley <doug(dot)hunley(at)gmail(dot)com> |
---|---|
To: | Bosco Rama <postgres(at)boscorama(dot)com> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: cluster on conditional index? |
Date: | 2012-08-16 15:25:48 |
Message-ID: | CALxYTP6MS=ROY9QP4jdV+5krnNybakmUfMxsZDsRzJkBRi3NVA@mail.gmail.com |
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Lists: | pgsql-performance |
On Wed, Aug 15, 2012 at 5:19 PM, Bosco Rama <postgres(at)boscorama(dot)com> wrote:
> On 08/15/12 14:05, Josh Berkus wrote:
>>
>>> That actually makes sense to me. Cluster the rows covered by that
>>> index, let the rest fall where they may. I'm typically only accessing
>>> the rows covered by that index, so I'd get the benefit of the cluster
>>> command but wouldn't have to spend cycles doing the cluster for rows I
>>> don't care about.
>>
>> Sure, that's a feature request though. And thinking about it, I'm
>> willing to bet that it's far harder to implement than it sounds.
How/where does file feature requests?
>>
>> In the meantime, you could ad-hoc this by splitting the table into two
>> partitions and clustering one of the two partitions.
>
> Wouldn't creating a second index on the boolean itself and then clustering
> on that be much easier?
that's what I was looking into doing actuallly
--
Douglas J Hunley (doug(dot)hunley(at)gmail(dot)com)
Twitter: @hunleyd Web:
douglasjhunley.com
G+: http://goo.gl/sajR3
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