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Re: BLOB issue(s) & questions

From: Andre Felipe Machado <andremachado(at)techforce(dot)com(dot)br>
To: "pgsql-odbc" <pgsql-odbc(at)postgresql(dot)org>
Subject: Re: BLOB issue(s) & questions
Date: 2004-05-16 12:45:01
Message-ID: 200405160945.01579.andremachado@techforce.com.br (view raw or flat)
Thread:
Lists: pgsql-odbc
> There are three options:
>
> 1) Use a bytea column. You might create a domain as an 'lo' alias to
> bytea if required.

This works. And very easy.
But for files upt to around 2 MB. Beware.



> 2) Use the /contrib/lo code. This custom datatype allows you to create a
> cleanup trigger for each lo column.

This works.
but not easy with odbc and other apps...


>
> 3) Use the 'simple' ODBC lo option documented at:
> http://gborg.postgresql.org/project/psqlodbc/faq/faq.php?faq_id=52 -


> Please note that I haven't tried using blobs in years...
>
> Regards, Dave.


Solution 3 does not work for Postgresql since 7.x, as I can remember. For 
7.3.x is sure (I tried).
The innards of Pg changed a lot and it does not allow the tricks cited.
Use the solution 2, instead, for very large objects over 2MB.

good luck.
Andre Felipe
http://www.andrefelipemachado.hpg.ig.com.br/linux/index.html


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