I have tried like this.
But in my case it is not working when trying to access a column that is not 
exists in the table.

Example:

CREATE TABLE test_str (te_id text);

INSERT INTO test_str VALUES ('a');
INSERT INTO test_str VALUES ('b');
INSERT INTO test_str VALUES ('c');

SELECT t.name from test_str t;

I am getting error like this.

ERROR:  column t.name does not exist



--- On Wed, 24/2/10, Net Tree Inc. <nettree...@gmail.com> wrote:

From: Net Tree Inc. <nettree...@gmail.com>
Subject: Re: [GENERAL] how do I do dump and restore without bugging with 
constraint?
To: pgsql-ad...@postgresql.org, pgsql-general@postgresql.org
Date: Wednesday, 24 February, 2010, 1:57 AM

I see something related with Deferrable and Initially deferrable that
seems like something could avoid constraints when dumping and restore,
but it has to modify the table or re-create all of them to have such
option (maybe is what you referraled "table definitions"). Is it what
it can be use for to avoid during dumping and restoring? 






  DEFERRABLE

    NOT DEFERRABLE
This controls whether the constraint can be deferred. A constraint that
is not deferrable will be checked immediately after every command.
Checking of constraints that are deferrable can be postponed until the
end of the transaction (using the SET CONSTRAINTS command).       NOT DEFERRABLE
is the default. Only foreign key constraints currently accept this
clause. All other constraint types are not deferrable. INITIALLY IMMEDIATE

    INITIALLY DEFERRED
If a constraint is deferrable, this clause specifies the default time
to check the constraint. If the constraint is INITIALLY IMMEDIATE, it is 
checked after each       statement. This is the default.  If the constraint is  
     INITIALLY DEFERRED, it is checked only at the       end of the 
transaction.  The constraint check time can be       altered with the SET 
CONSTRAINTS command.      




On Tue, Feb 23, 2010 at 12:50 PM, Net Tree Inc. <nettree...@gmail.com> wrote:

Hi all,
I am dumping both schema and data from old database to new one. The new 
database schema is somehow contain slightly different schema then the old one. 
When I do restore it shown alot errors related with constraints. How can I dump 
and to restore from old to new without dealing with constraint and just forces 
data dump to where it suppose to belong? 











-- 
---------------------------------------
Steven Huang




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