AW: Download file from COPY ... TO with pgadmin

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От Marco Lechner
Тема AW: Download file from COPY ... TO with pgadmin
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Msg-id e4beb8b2bc6941ddbeff5148a55dbbc0@bfs.de
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Ответ на Re: Download file from COPY ... TO with pgadmin  (Erik Wienhold <ewie@ewie.name>)
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Works as expected on both ways. Thnx.

-----Ursprüngliche Nachricht-----
Von: Erik Wienhold <ewie@ewie.name> 
Gesendet: Dienstag, 31. Januar 2023 14:58
An: Marco Lechner <mlechner@bfs.de>; pgsql-general@lists.postgresql.org
Betreff: Re: Download file from COPY ... TO with pgadmin

> On 31/01/2023 14:02 CET Marco Lechner <mlechner@bfs.de> wrote:
>
> Using COPY …TO it is possible to store e.g. the “value” of a bytea 
> cell in a directory on the server. E.g. by this:
>
> COPY (SELECT content FROM d_doc WHERE id = 'x123456') TO 
> CONCAT('/tmp/mydoc.pdf’) (FORMAT binary);
>
> As we do not have access to the postgresql fileserver (ssh, …), but 
> can SELECT the value of the bytea cell, is It possible to download the 
> bytea directly into a file on a client computer when using pgadmin? Is 
> there a solution with the COPY … TO command, any pgadmin specific feature or any other simple solution?

Use psql with \copy which targets the client file system.  pgAdmin 5.4+ can also launch psql.

--
Erik

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