Hello!
Please, read pg_dump(1) manual page. You will find this text in it:
"It is not guaranteed that pg_dump's output can be loaded into a server of
an older major version -- not even if the dump was taken from a server
of that version. Loading a dump file into an older server may require
manual editing of the dump file to remove syntax not understood by the
older server."
Regards,
Dmitry Igrishin
2009/10/11 Robert Paulsen
<robert@paulsenonline.net>On Sunday 11 October 2009 3:32 am, Dmitriy Igrishin wrote:
> Hello.
> Note, that you may use SERIAL data type and PostgreSQL will implicitly
> create sequence for you column, for example,
> CREATE table test (
> id SERIAL NOT NULL PRIMARY KEY, -- PostgreSQL will implicitly
> create 'test_id_seq'
> dat text
> );
>
> Regards,
> Dmitiy Igrishin
>
I believe that's how I started, not knowing any other way, but the pg_dump
utility spits things out in all the gory details!
Somewhere along the line the default value for the id field was lost. I at
first suspected it happened in the dump/restore cycle when I restored the
data back into 8.0 after dumping it with 8.2 but I reran that scenario and
something else happened: It would NOT restore back into 8.0 at all, so that
must not be what I actually did to get into the "lost default" situation.
Below is what 8.2 dumps out. 8.0 refuses imported that. I suppose if I had
originally edited the 8.2 dump data to "fix" this I might have gotten into
the mess I was in but I sure don't remember doing that.
8.2 dump data:
id integer DEFAULT nextval(('auth_id_seq'::text)::regclass) NOT NULL,
What 8.0 is happy with:
id integer DEFAULT nextval('vault_id_seq'::text) NOT NULL,
Bob
