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Re: Major upgrade advice

From: Roberto Garcia <roberto(dot)garcia(at)cptec(dot)inpe(dot)br>
To:
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Major upgrade advice
Date: 2008-06-18 19:00:51
Message-ID: 48595B63.4080000@cptec.inpe.br (view raw or flat)
Thread:
Lists: pgsql-admin
Just to mention one issue we had here:

In 8.1 we did this to retrieve all data from a specific date:
SELECT * FROM xxx
WHERE <timestamp_column> LIKE '2008-05-20%'

In 8.3 we had to change to:
SELECT * FROM xxx
WHERE <timestamp_column> >= CAST('2008-05-20' as timestamp) AND
      <timestamp_column> < CAST('2008-05-21' as timestamp)

Regards
Roberto Garcia


Steve Crawford wrote:
> I'm getting ready to tackle another upgrade: 7.4.6 -> 8.3.3. The 
> preliminaries (development/testing) look good but I'd like 
> suggestions/warnings/comments on:
>
> 1. Removing OIDs on user tables.
>
> I don't see any dump or restore options to remove OIDs. Am I better 
> off modifying the dump to alter the "SET default_with_oids = true;" 
> lines or going through all the user tables in advance and running 
> "ALTER TABLE ... SET WITHOUT OIDS"? Other options?
>
> 2. Alter encoding from C to utf8.
>
> Cheers,
> Steve
>
>
>


Roberto Garcia
Banco de Dados, MSc
Fone: (12) 3186-8405 
-- 
A luta contra o aquecimento global depende de cada um de nós, faça sua parte, economize recursos naturais.
-- 
http://www.cptec.inpe.br
http://www.inpe.br 


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Subject: Re: Advice on running two database clusters on oneserver machine
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