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Re: EXPLAIN output explanation requested

From: Ron Arts <ron(dot)arts(at)neonova(dot)nl>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: EXPLAIN output explanation requested
Date: 2008-06-03 11:10:10
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-novice
A. Kretschmer schreef:
> am  Tue, dem 03.06.2008, um 12:35:34 +0200 mailte A. Kretschmer folgendes:
>> I guess, you have much insert/delete or update - operations on this
>> table and no recent vacuum.
>> Try to run a 'vacuum full;' and re-run your query. And, run a 'explain
>> analyse <your query>' to see the estimated costs and the real costs. 
> Btw, run 'select relpages, reltuples from pg_class where relname='phone'; 
> before and after the 'vacuum full' and show us the result.
> Andreas


thanks for answering. I'll run the vacuum full tonight, I don't
dare running it during the day, and I'll show you the query outputs as well.


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