试题详情
- 单项选择题 Exhibit:
Examine the data in the EMPLOYEES table. Examine the subquery: SELECT last_name FROM employees WHERE salary IN (SELECT MAX(salary) FROM employees GROUP BY department_id); Which statement is true?（） A、The SELECT statement is syntactically accurate.
B、The SELECT statement does not work because there is no HAVING clause.
C、The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list.
D、The SELECT statement does not work because the GROUP BY clause should be in the main query and not in the subquery.
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