On Wed, 13 Oct 2021 at 16:30, hubert depesz lubaczewski <depesz@xxxxxxxxxx> 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
