From: | AJ Weber <aweber(at)comcast(dot)net> |
---|---|
To: | Matheus de Oliveira <matioli(dot)matheus(at)gmail(dot)com> |
Cc: | Shaun Thomas <sthomas(at)optionshouse(dot)com>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: how to improve perf of 131MM row table? |
Date: | 2014-06-26 14:07:45 |
Message-ID: | 53AC2931.40003@comcast.net |
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Thread: | |
Lists: | pgsql-performance |
I will try this, but can you clarify the syntax? I only know the VALUES
clause from insert statements, and it would be one set of parens like
VALUES('175769', '175771', ... )
You seem to indicate a VALUES clause that has strange parenthesis
corresponding to it.
Thank you for the feedback and offer to help!
-AJ
On 6/26/2014 9:56 AM, Matheus de Oliveira wrote:
>
> On Thu, Jun 26, 2014 at 10:26 AM, AJ Weber <aweber(at)comcast(dot)net
> <mailto:aweber(at)comcast(dot)net>> wrote:
>
> OK, the sample query is attached (hopefully attachments are
> allowed) as "query.sql".
> The "master table" definition is attached as "table1.sql".
> The "detail table" definition is attached as "table2.sql".
> The EXPLAIN (ANALYZE, BUFFERS) output is here:
> http://explain.depesz.com/s/vd5
>
>
> Could you try chaning your query and sending the EXPLAIN of the following?
>
> Instead of `node_id in ('175769', '175771', ...)` try `node_in IN
> (VALUES('175769'), ('175771'), ... )`.
>
>
> --
> Matheus de Oliveira
> Analista de Banco de Dados
> Dextra Sistemas - MPS.Br nível F!
> www.dextra.com.br/postgres <http://www.dextra.com.br/postgres/>
>
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