instruction: For those employees who did not have any job in the past, a bar chart shows the distribution of job_id and the sum of employee_id , and group by attribute job_id, and list by the JOB_ID from high to low.
response: SELECT JOB_ID, SUM(EMPLOYEE_ID) FROM employees WHERE NOT EMPLOYEE_ID IN (SELECT EMPLOYEE_ID FROM job_history) GROUP BY JOB_ID ORDER BY JOB_ID DESC