CREATE TABLE users (role_description VARCHAR(255), role_code VARCHAR(255), user_login VARCHAR(255)); CREATE TABLE ROLES (role_description VARCHAR(255), role_code VARCHAR(255), user_login VARCHAR(255))
Find the description of the most popular role among the users that have logged in.
    
SQL: SELECT role_description FROM ROLES WHERE role_code = (SELECT role_code FROM users WHERE user_login = 1 GROUP BY role_code ORDER BY COUNT(*) DESC LIMIT 1)