Message-ID: <48595B63.4080000@cptec.inpe.br>
Date: Wed, 18 Jun 2008 16:00:51 -0300
From: Roberto Garcia <roberto.garcia@cptec.inpe.br>
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CC: pgsql-admin@postgresql.org
Subject: Re: Major upgrade advice
References: <48594429.7040001@pinpointresearch.com>
In-Reply-To: <48594429.7040001@pinpointresearch.com>
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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 
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