Create user in postgres with read only access

read-access-pg-user.sql

--
-- Read only 
--

-- Create a group
CREATE ROLE cents_rd_group;

-- Grant access to existing tables
GRANT USAGE ON SCHEMA public TO cents_rd_group;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO cents_rd_group;
GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO cents_rd_group;

-- Grant access to future tables on select
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO cents_rd_group;

-- Create a final user with password
CREATE USER cents_rd WITH PASSWORD 'bhoom';
GRANT cents_rd_group TO cents_rd;