Re: Fighting the planner >:-( - Mailing list pgsql-performance

From Casey Allen Shobe
Subject Re: Fighting the planner >:-(
Date
Msg-id CAFmVg3jGRj1z5y53coARXouVXj6vje-QWCQD=mjLR8GJ65ognQ@mail.gmail.com
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In response to Re: Fighting the planner >:-(  (Виктор Егоров <vyegorov@gmail.com>)
Responses Re: Fighting the planner >:-(  (Виктор Егоров <vyegorov@gmail.com>)
List pgsql-performance
I'll get back to you on this Monday - I'm heading home for the week now.

However I was unable to adjust the statistics target using that command:

alter table opportunity.census_user set statistics 500;
ERROR:  syntax error at or near "statistics"
LINE 1: alter table opportunity.census_user set statistics 500;
                                             ^



On Fri, Feb 1, 2013 at 4:55 PM, Виктор Егоров <vyegorov@gmail.com> wrote:
2013/2/1 Casey Allen Shobe <casey@shobe.info>:
> Rowcounts are shown in the earlier paste link, but apparently I forgot to
> include the census table - hewitt_1_0_factors_precalc_new has 4,135,890
> rows, and census_user has 1846439 rows.
>
> Statistics target is the default at 100.

I would try the following:
ALTER TABLE hewitt_1_0_factors_precalc_new SET STATISTICS 1000;
ALTER TABLE census_user SET STATISTICS 500;
ALTER TABLE census_output SET STATISTICS 500;
and analyzed them after. I hope I guessed ‘census_output’ name correctly.

And could you kindly share the plan after:
SET enable_nestloop TO off;


--
Victor Y. Yegorov



--
Casey Allen Shobe
casey@shobe.info


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