CREATE TABLE jobs (job_id TEXT, job_title TEXT, min_salary DECIMAL, max_salary DECIMAL)
CREATE TABLE countries (country_id TEXT, country_name TEXT, region_id DECIMAL)
CREATE TABLE job_history (employee_id DECIMAL, start_date TIME, end_date TIME, job_id TEXT, department_id DECIMAL)
CREATE TABLE departments (department_id DECIMAL, department_name TEXT, manager_id DECIMAL, location_id DECIMAL)
CREATE TABLE regions (region_id DECIMAL, region_name TEXT)
CREATE TABLE locations (location_id DECIMAL, street_address TEXT, postal_code TEXT, city TEXT, state_province TEXT, country_id TEXT)
CREATE TABLE employees (employee_id DECIMAL, first_name TEXT, last_name TEXT, email TEXT, phone_number TEXT, hire_date TIME, job_id TEXT, salary DECIMAL, commission_pct DECIMAL, manager_id DECIMAL, department_id DECIMAL)

display the employee number and job id for all employees whose salary is smaller than any salary of those employees whose job title is MK_MAN.
SELECT employee_id, job_id FROM employees WHERE salary < (SELECT MIN(salary) FROM employees WHERE job_id = 'MK_MAN')
SELECT "employee_id", "job_id" FROM "employees" WHERE "salary" < (SELECT MIN("salary") FROM "employees" WHERE "job_id" = 'MK_MAN')