Greetings


I'm working with PostgreSQL for quite some time now
but only yesterday ran into a specific problem, as - so far -
I have always used customized backup/restore-scripts.

PROBLEM:
pg_dump seems to dump objects strictly alphabetically,
I presume. Hence a table "events" is always dumped
_before_ any sequence "events_id_seq" that is already
being referenced in the "create table"-statement for
table "events".

Example

CREATE TABLE event (
event_id integer DEFAULT nextval('event_id_seq'::text) NOT NULL,

KL <zappa_lot@gmx.net> writes:
> pg_dump seems to dump objects strictly alphabetically,

No, it doesn't ... at least not if you are running 8.0 or later.
It looks at dependencies to see what has to be dumped first.
(It does prefer alpha order when there's no dependency constraint.)

There are various situations where there might not be a dependency
entry, but without knowing more about the history of the table and
exactly which version you're running, it's hard to speculate about
why or what's the best fix.

I will point out, however, that the given script does not in fact
fail to load in any Postgres version known to me. Maybe you should
post your real problem instead of an oversimplified example.

regards, tom lane

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