I have created a user in PostgreSQL.
then I have created a role
and granted the role to the user.
now I want to write row level policy for the current user with some role permission
sql:--
create user martin;
create role role_manager;
grant role_manager to martin;
CREATE POLICY student_rls_policy
student
FOR ALL
TO role_manager
USING (name = **?**);
Now I want to pass current_user role at?
Related
I created a new user and gave read-only access to the user for all the schemas with:
alter default privileges grant select on tables to the user;
Initially, the user had access but when the table was recreated the access automatically declined.
Why is this happening?
How you are giving permission? Group level or User level.
Try below GRANT USAGE
For Group level
GRANT USAGE ON SCHEMA 'SCHEMA_NAMES' TO GROUP Group_name;
For User level
GRANT USAGE ON SCHEMA 'SCHEMA_NAMES' TO USER User_name;
I have created two new users and a new role. Given select privilege to the role for one table in schema A and assigned this role to user b. While issuing a select query for the table in schema a with this user I am experiencing table or view not found issue.
CREATE USER READUSER1 IDENTIFIED BY readuser1;
CREATE USER READUSER2 IDENTIFIED BY readuser2;
CREATE ROLE READONLY_USER IDENTIFIED BY readonlyuser;
GRANT select ON READUSER1.TESTA TO READONLY_USER;
GRANT READONLY_USER TO READUSER2;
Now from READUSER2 session :
SELECT * FROM READUSER1.TESTA > 00942. 00000 - "table or view does not exist"
I assume that you created the table successfully in the readUser1 schema though you don't show that step.
When logged in as readUser2, what roles are enabled for the session?
select *
from session_roles
I'll wager that the role is not enabled for the session. Normally, you don't set passwords on roles because you normally want those roles to be available to the user as soon as they log in. If you set a password on a role, however, then every time the user creates a new session, they have to explicitly enable the role by specifying the password. That's quite useful in some unusual situations but it's not the norm.
Assuming that readonly_user does not appear in session_roles, you can enable the role using the set role command
set role readonly_user
identified by readonlyuser;
Once you've done that, the role should appear in session_roles and you should be able to query the table.
Normally, though, you'd have created a normal role not a password protected role by omitting the identified by clause
create role readonly_user;
I'm coming to postgreSQL with a SQL Server background and was naively applying the same concepts to postgreSQL in order to allow different users to share 'by default' some objects within a database.
This is what I did:
CREATE DATABASE testdb;
CREATE ROLE testdb_role_full INHERIT;
GRANT ALL PRIVILEGES ON DATABASE testdb TO testdb_role_full;
CREATE USER user1 INHERIT;
GRANT testdb_role_full TO user1;
CREATE USER user2 INHERIT;
GRANT testdb_role_full TO user2;
Once done, I created a table t1 using the user1.
Then, I tried, as user2, to read the t1 table and I received a "permission denied error"... :-(
By reading the documentation, it seems that I have to issue a SET ROLE testdb_role_full first so as to act as the testdb_role_full.
However, this is not really that I want. I do not want the user to be aware of this.
So my question:
Is there any way to make this work?
Thanks a lot,
José
You've granted some privileges on the database, but that doesn't mean any user with the role testdb_role_full would have all privileges on all objects inside that database. To quote from the documentation:
When an object is created, it is assigned an owner. The owner is normally the role that executed the creation statement. For most kinds of objects, the initial state is that only the owner (or a superuser) can do anything with the object. To allow other roles to use it, privileges must be granted.
So after the user1 created the table t1, he is the owner and only he has the privileges on it. He would need to run
GRANT ALL PRIVILEGES ON TABLE t1 TO testdb_role_full;
then user2 would be able to access it as well (without having to switch any roles - that's only necessary when it has the NOINHERIT attribute on the role).
If you don't want your users to have to execute GRANT each time they create a new object in the database, you can alter the default privileges that will be applied whenever an object is created by user2:
ALTER DEFAULT PRIVILEGES FOR user2
GRANT ALL PRIVILEGES ON TABLES TO testdb_role_full;
Notice these specify the initial value only, and user2 could revoke the privileges on his tables if he wanted to prevent others from seeing them.
I need to achieve the below goal in postgresql. There is a database "textdb" with 4 schema's that are public, ds, fin, viz.
We need to create a script that can be used to provide access to the role. So, I need to create 3 roles, one for analyst, another for data scientist, and last one for visualization people.
CREATE ROLE analyst WITH LOGIN;
CREATE ROLE ds WITH LOGIN;
CREATE ROLE vi WITH LOGIN;
The respective team members will be added to their respective roles so that we need not to get access to individual users. Analyst is required to get complete access of the database "testdb", ds role will have access to all the data in the schema "ds" and "fin" and vi role will have access to schema "viz".
Also, whenever new table/view/procedure/function is added, then automatically users should have the required access.
If you plan to grant those roles to users they don't need login I believe. This is exact difference between "USER that can connect" and "just ROLE"
for new relations grants use ALTER DEFAULT PRIVILEGES
to grant role to user just grant ds to user_mike; if you \du+ user_mike you will see roles granted in "Menber of" section
I would like to have user who can read and insert data to all tables within one schema. I've executed following SQl statements:
CREATE SCHEMA ABC;
CREATE USER MyUser with PASSWORD '12345678';
GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA ABC TO MyUser;
When I try to login with this user I am getting exception: Role 'MyUser' does not exists.... What is not correct here?
How to Define Privileges Upon Role Creation
Now, we are ready to recreate the "demo_role" role with altered permissions. We can do this by specifying the permissions we want after the main create clause:
CREATE ROLE role_name WITH optional_permissions;
You can see a full list of the options by typing:
\h CREATE ROLE
We want to give this user the ability to log in, so we will type:
CREATE ROLE demo_role WITH LOGIN;
CREATE ROLE
If we want to get to this state without specifying the "login" attribute with every role creation, we can actually use the following command instead of the "CREATE ROLE" command:
CREATE USER role_name;
The only difference between the two commands is that "CREATE USER" automatically gives the role login privileges.
here or here about PostgreSQL User Administration.
Thanks
UPDATE
We want to give this user the ability to log in, so we will type:
CREATE ROLE demo_role WITH LOGIN;
CREATE ROLE
If we check the attributes \du
demo_role | | {}
my user name was case sensitive. using small letters solves problem.