Re: Open bytea files (images, docs, excel, PDF) stored in Postgresql using a Microsoft Access form

Ok. I got the general idea. Thanks Vincent.
My next question is:
How do I convert the bytea content stored in Postgresql into the real file so I can put it in a local directory? (and
theopposite process: store a file on a path to a postgresql database) 
I know this could be more an access issue but I'm quite newbie...
Regards,

-----Mensaje original-----
De: Vincent Veyron [mailto:vv.lists@wanadoo.fr]
Enviado el: viernes, 07 de junio de 2013 14:41
Para: Aitor Gil Martin
CC: pgsql-general@postgresql.org
Asunto: Re: [GENERAL] Open bytea files (images, docs, excel, PDF) stored in Postgresql using a Microsoft Access form

Le vendredi 07 juin 2013 à 11:35 +0200, Aitor Gil Martin a écrit :
> Hi,
>
> I,ve got a clients table in PostgreSQL. Each client has different
> documents (more than 7.000 files in total in different extensions JPG,
> XLS,DOC,PDF...) stored in a bytea field in another PostgreSQL Table. My
> intention is to create a form using Microsoft Access (or some other
> software) to be able to manage those files (Add more files, modify
> files or delete files).
>
> What should I do in order Access could understand (open) each file or
> store new files?

I do this from a navigator now, but the general idea is :

use this table structure:

create table (
id_document serial,
content bytea,
extension text)

In your form, display a list of links, one for each file, pointing to a
directory you can write to, with the file's id and extension. So if file
id is 7001, extension is pdf, path is : your/directory/7001.doc

Write the file's data to disk, obviously using the same name for the
file as in the link, once the user clicks on the link, using the
on_click event : file will be served to the user.


--
Salutations, Vincent Veyron
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