Re: Grant select for all tables of the 12 schemas of my one db ?

On Wed, 13 Oct 2021 at 16:30, hubert depesz lubaczewski <depesz(at)depesz(dot)com>
wrote:

> On Wed, Oct 13, 2021 at 03:33:20PM +0530, Vijaykumar Jain wrote:
> > something like this ?
>
> Like, but not exactly.
>
> Consider what will happen if you have schema named "whatever something
> else" - with spaces in it. Or "badlyNamedSchema".
>
>
Yeah, my bad. I ran that casually, which was wrong. Thanks for correcting
it.

postgres=# \dn
List of schemas
Name | Owner
-----------+----------
my Schema | postgres
public | postgres
(2 rows)

-- the problem with my original dynamic sql
postgres=# do $$
declare sch text; stmt text;
begin
for sch in select nspname from pg_namespace where nspname not like 'pg\_%'
and nspname not like 'information%' loop -- use what you want, filter out
rest
stmt = 'GRANT USAGE ON SCHEMA ' || sch || ' TO postgres';
raise notice '%', stmt;
execute stmt;
end loop;
end; $$;
NOTICE: GRANT USAGE ON SCHEMA public TO postgres
NOTICE: GRANT USAGE ON SCHEMA my Schema TO postgres
ERROR: syntax error at or near "Schema"
LINE 1: GRANT USAGE ON SCHEMA my Schema TO postgres
^
QUERY: GRANT USAGE ON SCHEMA my Schema TO postgres
CONTEXT: PL/pgSQL function inline_code_block line 7 at EXECUTE

-- the solution
postgres=# do $$
declare sch text; stmt text;
begin
for sch in select nspname from pg_namespace where nspname not like 'pg\_%'
and nspname not like 'information%' loop -- use what you want, filter out
rest
stmt = 'GRANT USAGE ON SCHEMA ' || quote_ident(sch) || ' TO postgres';
raise notice '%', stmt;
execute stmt;
end loop;
end; $$;
NOTICE: GRANT USAGE ON SCHEMA public TO postgres
NOTICE: GRANT USAGE ON SCHEMA "my Schema" TO postgres
DO

/*
-- OR using format
postgres=# do $$
declare sch text; stmt text;
begin
for sch in select nspname from pg_namespace where nspname not like 'pg\_%'
and nspname not like 'information%' loop -- use what you want, filter out
rest
stmt = format('GRANT USAGE ON SCHEMA %I TO postgres', sch);
raise notice '%', stmt;
execute stmt;
end loop;
end; $$;
NOTICE: GRANT USAGE ON SCHEMA public TO postgres
NOTICE: GRANT USAGE ON SCHEMA "my Schema" TO postgres
DO
*/

> Generally you'd want to use:
>
> execute format('GRANT USAGE ON SCHEMA %I TO readonlyuser_role', sch);
>
> and it will take care of it.
>
> > also,
> > in case you like, I have kind of liked this
> > you can try running meta commands using psql -E to get the query that you
> > would like to run for DO block.
>
> while in psql, you can simply:
> select format() ... from ...;
> make sure that it returns list of correct sql queries, with no mistakes,
> and with ; at the end of each command, and then rerun it like:
> select format() ... from ... \gexec
>
> depesz
>
>

--
Thanks,
Vijay
Mumbai, India