View the Exhibit and examine the structure of EMPLOYEES and JOB_IHISTORY
Tables.
The EMPLOYEES table maintains the most recent information regarding salary,
department, and job for all the employees. The JOB_HISTORY table maintains the
record for all the job changes for the employees. You want to delete all the records from
the JOB_HISTORY table that are repeated in the EMPLOYEES table.
Which two SQL statements can you execute to accomplish the task? (Choose two.)
A DELETE
FROM job_history j
WHERE employee_id =
(SELECT employee_id
FROM employees e
WHERE j.employee_id = e.employee_id)
AND job _id = (SELECT job _id
FROM employees e
WHERE j.job_id = e.job_id);
B.
DELETE
FROM job_history j
WHERE (employee_id, job _id) = ALL
(SELECT employee_id, job_id
FROM employees e
WHERE j.employee_id = e.employee_id and j.job_id = e.job_id)
C.
DELETE
FROM job_history j
WHERE employee_id =
(SELECT employee_id
FROM employees e
WHERE j.employee_id = e.employee_id and j.job_id = e.job_id)
D.
DELETE
FROM job_history j
WHERE (employee_id, job _id) =
(SELECT employee_id, job_id
FROM employees e
WHERE j.employee_id = e.employee_id and j.job_id = e.job_id)