Re: [BUGS] 8.0.0beta1: Ownership of implicit sequences after dump/restore

Added to open items list:

* fix permissions on sequences restored via pg_dump

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Michael Fuhr wrote:
> PostgreSQL version: 8.0.0beta1
> Operating system : Solaris 9
>
> Backups created by pg_dump/pg_dumpall don't set the ownership of
> implicitly-created sequences. When backups are restored, users who
> created sequences may not be able to use them.
>
> How to repeat:
>
> 1. Create a test user and a test database.
>
> createuser -P -Upostgres testuser
> Enter password for new user: ********
> Enter it again: ********
> Shall the new user be allowed to create databases? (y/n) n
> Shall the new user be allowed to create more new users? (y/n) n
>
> createdb -Upostgres testdb
>
> 2. Connect to the test database as the test user, create explicit
> and implicit sequences, then list the sequences.
>
> psql -Utestuser testdb
> CREATE SEQUENCE test_seq;
> CREATE TABLE stuff (id SERIAL PRIMARY KEY, name TEXT NOT NULL);
> \ds
> List of relations
> Schema | Name | Type | Owner
> --------+--------------+----------+----------
> public | stuff_id_seq | sequence | testuser
> public | test_seq | sequence | testuser
> (2 rows)
>
> 3. Make a backup of the test database.
>
> pg_dump -Upostgres testdb > backup.sql
>
> 4. Drop the test database.
>
> dropdb -Upostgres testdb
>
> 5. Recreate the test database and restore it.
>
> createdb -Upostgres testdb
> psql -Upostgres -f backup.sql testdb
>
> 6. Connect to the test database as the test user, show the sequences,
> and try to use the implicitly-created one.
>
> psql -Utestuser testdb
> \ds
> List of relations
> Schema | Name | Type | Owner
> --------+--------------+----------+----------
> public | stuff_id_seq | sequence | postgres
> public | test_seq | sequence | testuser
> (2 rows)
>
> SELECT nextval('stuff_id_seq');
> ERROR: permission denied for sequence stuff_id_seq
>
> pg_dump sets the ownership of the explicitly-created sequence via
> an ALTER TABLE statement (I see ALTER SEQUENCE ... OWNER TO on the
> TODO list):
>
> ALTER TABLE public.test_seq OWNER TO testuser;
>
> No such statement is issued for the implicitly-created sequence,
> resulting in the sequence being owned by the user who restored the
> database. This would typically be a database superuser.
>
> Is this a bug in pg_dump/pg_dumpall, or is it a bug in the ALTER
> TABLE ... OWNER TO statement that set the ownership of the table
> that implicitly created the sequence? It seems reasonable that
> changing a table's ownership should also change the ownership of
> any implicitly-created sequences, or has that already been discussed
> and rejected?
>
> Thanks.
>
> --
> Michael Fuhr
> http://www.fuhr.org/~mfuhr/
>
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