Re: Grant on lo_export()

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(at)sss(dot)pgh(dot)pa(dot)us> escreveu:

Nelson Gonzaga <ngonzaga(at)yahoo(dot)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