How to create read only user in PostgreSQL

read-access.sql

-- Create a group
CREATE ROLE readaccess;

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

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

-- Create a final user with password
CREATE USER tomek WITH PASSWORD 'secret';
GRANT readaccess TO tomek;

GRANT REFERENCES ON ALL TABLES IN SCHEMA public TO readaccess;
To be able to see PrimaryKey constraint

Thanks it's useful

This is golden

Getting permission denied error on viewing list of data from any tables