Обсуждение: Pg_dump behaviour

I often perform single-table backups using pgadmin.
Recently, a problem occurred while doing that kind of backup using pgadmin
1.6.2 and PostgreSQL 8.2.1 on a Windows server:
When trying to backup a table contained in a specific schema, pg_dump can't
find the table.


For instance, I have a database named 'mdg', containing a schema named
'art', in turn containing a table named 'tefh'.
When I try to backup this table to the root directory with pgadmin, it
generates and executes the following command:

pg_dump.exe -i -h localhost -p 5432 -U postgres -F c -v -f "c:\tefh" -t
tefh -n art mdg


Pg_dump then raises the following error:

pg_dump: No matching tables were found


I tried some alternatives from the command line, but pg_dump only seems to
make the single-table backup when the table name is qualified, as in:

pg_dump.exe -i -h localhost -p 5432 -U postgres -F c -v -f "c:\tefh" -t
art.tefh mdg


At this point, I'd say that the command generated by pgadmin should work, as
it seems to be consistent with pg_dump documentation. Any hints ?

Thank you.


Hélder M. Vieira

"=?iso-8859-1?Q?H=E9lder_M._Vieira?=" <hmv@mail.telepac.pt> writes:
> I often perform single-table backups using pgadmin.
> Recently, a problem occurred while doing that kind of backup using pgadmin
> 1.6.2 and PostgreSQL 8.2.1 on a Windows server:
> For instance, I have a database named 'mdg', containing a schema named
> 'art', in turn containing a table named 'tefh'.
> When I try to backup this table to the root directory with pgadmin, it
> generates and executes the following command:

> pg_dump.exe -i -h localhost -p 5432 -U postgres -F c -v -f "c:\tefh" -t
> tefh -n art mdg

That was the pre-8.2 way to do it; now the right thing would be
    -t art.tefh
Sounds like pgadmin needs an update.  While they're at it, they should
definitely lose the -i switch ... using that by default is extremely
stupid/dangerous.

            regards, tom lane

----- Original Message -----
From: "Tom Lane" <tgl@sss.pgh.pa.us>
To: "Hélder M. Vieira" <hmv@mail.telepac.pt>
Cc: <pgsql-admin@postgresql.org>
Sent: Monday, January 15, 2007 3:39 PM
Subject: Re: [ADMIN] Pg_dump behaviour


...
> That was the pre-8.2 way to do it; now the right thing would be
> -t art.tefh
> Sounds like pgadmin needs an update.
...


Thanks for clarifying.
The second note in the '-t' option description in the pg_dump documentation
is a clear warning.
I'll submit a bug report in the pgadmin mailling list.


Regards,

Helder M. Vieira