Re: Extensions support for pg_dump, patch v27

Itagaki Takahiro <itagaki(dot)takahiro(at)gmail(dot)com> writes:
> Since pg_dump won't dump user objects in pg_catalog, adminpack can
> avoid the above errors by installing functions in pg_catalog.
> CREATE EXTENSION might have the same issue -- Can EXTENSION work
> without errors when we install extensions in template databases?

Well in fact the reason why pg_dump will not dump the extension when
it's installed in pg_catalog is that the pg_depend entry is not
recorded, and the SQL query pg_dump uses gets its data from pg_extension
JOIN pg_depend JOIN pg_namespace.

The missing entry in pg_depend is the reason why the extension is not
part of the dump. We could fix that using a LEFT JOIN here and COALESCE
to force the namespace as pg_catalog. Is that not a kludge? If
acceptable, I will do that next.

Regards,
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support