From: Nelson Gonzaga <ngonzaga@yahoo.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Re: Grant on lo_export()
Date: Wed, 1 Aug 2018 18:34:46 +0000 (UTC)
Message-ID: <1115222796.574920.1533148486880@mail.yahoo.com> (raw)
In-Reply-To: <27170.1533132366@sss.pgh.pa.us>
References: <1160328940.343057.1533121961953.ref@mail.yahoo.com>
<1160328940.343057.1533121961953@mail.yahoo.com>
<27170.1533132366@sss.pgh.pa.us>
I understand that I have to use libpq for the lo_import command to work.but I did not find .NET code to use this library.Is there an example? Or just this in C ++ [1]?
[1] https://www.postgresql.org/docs/current/static/lo-examplesect.html
Em quarta-feira, 1 de agosto de 2018 11:06:43 BRT, Tom Lane <tgl@sss.pgh.pa.us> escreveu:
Nelson Gonzaga <ngonzaga@yahoo.com> writes:
> Hi all,I'm trying to use lo_import / lo_export and apparently I have permission denied:
> command:select lo_export(oid_imagem, '/tmp2/erro_export1.png') fromimagem where nome_imagem = 'erro';
> ERROR: must be superuser to use server-side lo_export()
> SQL state:42501
> Hint:Anyone can use the client-side lo_export() provided by libpq.
The error message means exactly what it says.
As of v11 it'll be possible to grant usage of lo_export() to
non-superusers, but in all released branches that check is hard-wired.
Note that since you can use that function to overwrite PG data or config
files, granting use of it to someone you wouldn't trust with full
superuser would be a damfool idea anyway.
regards, tom lane
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Cc: ngonzaga@yahoo.com, tgl@sss.pgh.pa.us, pgsql-admin@lists.postgresql.org
Subject: Re: Grant on lo_export()
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