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Data Bases > Pgsql Novice > Re: EXPLAIN out...
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Re: EXPLAIN output explanation requested

by ron.arts@[EMAIL PROTECTED] (Ron Arts) Jun 3, 2008 at 01:10 PM

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

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.

Thanks,
Ron

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 8 Posts in Topic:
EXPLAIN output explanation requested
ron.arts@[EMAIL PROTECTED  2008-06-03 11:56:39 
Re: EXPLAIN output explanation requested
andreas.kretschmer@[EMAIL  2008-06-03 12:35:34 
Re: EXPLAIN output explanation requested
andreas.kretschmer@[EMAIL  2008-06-03 12:52:28 
Re: EXPLAIN output explanation requested
ron.arts@[EMAIL PROTECTED  2008-06-03 13:10:10 
Re: EXPLAIN output explanation requested
ron.arts@[EMAIL PROTECTED  2008-06-03 19:51:05 
Re: EXPLAIN output explanation requested
andreas.kretschmer@[EMAIL  2008-06-03 20:24:58 
Re: EXPLAIN output explanation requested
andreas.kretschmer@[EMAIL  2008-06-03 20:28:39 
Re: EXPLAIN output explanation requested
andreas.kretschmer@[EMAIL  2008-06-04 09:42:05 

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tan12V112 Fri Dec 5 5:22:50 CST 2008.