Is there a means to set the owner of all objects in a PostgreSQL database at the same time?

Question

Modify OWNER on all tables simultaneously in Postgresql describes some nifty ways to change table and other objects to a specific user, and it works swimmingly, however all the suggestions seem to ignore the functions I created.

Is there a fairly easy way to reset the owner of ALL objects in the database, including the functions? Doing it by hand is highly undesirable.

Answer 1

You should only ever manipulate system catalogs directly, if you know exactly what you are doing. It may have unexpected side effects. Or you can corrupt the database (or the whole database cluster) beyond repair.

@Jeremy's answer, while basically doing the trick, is not advisable for the general public. It unconditionally changes all functions in a schema. Are you sure there are no system functions affected or functions installed by an additional module? It would also be pointless to change the owner of functions that already belong to the future owner.

In short, try this instead:

SELECT string_agg('ALTER FUNCTION '
            || quote_ident(n.nspname) || '.' 
            || quote_ident(p.proname) || '(' 
            || pg_catalog.pg_get_function_identity_arguments(p.oid)
            || ') OWNER TO foo;'
          , E'\n') AS _sql
FROM   pg_catalog.pg_proc p
JOIN   pg_catalog.pg_namespace n ON n.oid = p.pronamespace
WHERE  n.nspname = 'public';
-- AND p.relowner <> (SELECT oid FROM pg_roles WHERE rolname = 'foo')
-- AND p.proname ~~ 'f_%'

This generates the canonical SQL commands ALTER FUNCTION ... to change all functions (in the specified schema). You can inspect the commands before executing them - one by one or all at once:

ALTER FUNCTION public.bar(text, text) OWNER TO foo;
ALTER FUNCTION public.foo(x integer) OWNER TO foo;
...

I included some commented WHERE clauses you might want to use to filter the results.

The aggregate function string_agg() requires PostgreSQL 9.0 or later. In older version substitute with array_agg() and array_to_string().

You could put all of this into a function like I demonstrate in this related answer.

Answer 2

Well, I didn't find a one-step process, but this takes care of all the objects I can see in my database:

update pg_class SET relowner = (SELECT oid FROM pg_roles WHERE rolname = 'foo')
where relnamespace = (select oid from pg_namespace where nspname = 'public' limit 1);

update pg_proc set proowner = (select oid from pg_roles where rolname = 'foo')
where pronamespace = (select oid from pg_namespace where nspname = 'public' limit 1);