试题详情
- 单项选择题 Examine the description of the EMPLOYEES table:
Which statement shows the maximum salary paid in each job category of each department?()
A、SELECT dept_id, job_cat, MAX(salary) FROM employees WHERE salary > MAX(salary);
B、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id, job_cat;
C、SELECT dept_id, job_cat, MAX(salary) FROM employees;
D、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id;
E、SELECT dept_id, job_cat, MAX(salary) FROM employees GROUP BY dept_id, job_cat, salary;
- B
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