How to avoid access to the public schema in Postgres?
One way to do it is to revoke everything from public: If we now re-connect to the postgres database and try to create a table this will fail: You are now connected to database “postgres” as user “u1”. The issue with this approach is that if we connect to another database we are still allowed to create tables:
What does revoke public mean in PostgreSQL documentation?
The REVOKE command revokes previously granted privileges from one or more roles. The key word PUBLIC refers to the implicitly defined group of all roles. See the description of the GRANT command for the meaning of the privilege types.
How to revoke permissions from PG _ catalog tables?
Your goal might be achieved by REVOKE ‘ing access to all schemas – hence locking user only in his private schema (with CREATE SCHEMA AUTHORIZATION username ). If any rights are already GRANT ‘ed to public, you cannot block them selectively for one user – you can only REVOKE FROM public.
When to revoke privileges in a public schema?
If you don’t want all users to be able to create objects in a public schema, then revoke the privilege: Note: In this command, public is the schema, and PUBLIC means all users— public is an identifier and PUBLIC is a keyword.
How to revoke a grant in PostgreSQL documentation?
Instead, user A could revoke the grant option from user B and use the CASCADE option so that the privilege is in turn revoked from user C. For another example, if both A and B have granted the same privilege to C, A can revoke his own grant but not B’s grant, so C will still effectively have the privilege.
How are UC privileges assigned in PostgreSQL schema?
Note how the UC privileges appear for the postgres owner as the first specification, now that we have assigned other-than-default privileges to the schema.
What’s the difference between public and private privileges in PostgreSQL?
The only difference in this listing of schema privileges from the first is the absence of the “C” in the second privilege specification, verifying our command was effective: users other than the postgres user may no longer create tables, views, or other objects in the public schema.
Where is the empty string in PostgreSQL privilege listing?
Thus to interpret the privilege listing above, the first specification tells us that the postgres user was granted the update and create privileges by itself on the public schema. Notice that for the second specification above, an empty string appears to the left of the equal sign.