Evaluate the SQL statement: 1 SELECT a.emp_name, a.sal, a.dept_id, b.maxsal 2 FROM employees a, 3 (SELECT dept_id, MAX(sal) maxsal 4. FROM employees 5 GROUP BY dept_id) b 6 WHERE a.dept_id = b.dept_id 7 AND a. asl < b. maxsal; What is the result of the statement? ()
On which of the following database objects may the SELECT privilege be controlled?()
Which of the following network topologies BEST describes a VPN? ()(Select TWO)
Click the ’Select and Place’ button. Place the events in the order they occur.
Evaluate these two SQL statements:SELECT last_name, salary, hire_dateFROM EMPLOYEES ORDRE BY salary DESC; SELECT last_name, salary, hire_dateFROM EMPOLYEES ORDER BY 2 DESC; What is true about them?()
SELECT * FROM Student WHERE Sname LIKE ’张_’语句中的’张_’ 用于查找姓张的学生。
If x and y are both positive even integers, which of the following expressions must be even? (Select all such expressions.)
Practice 2
This portrait-gallery of old Etonians is very select: preeminent distinction of birth or merit may win you a place there, or again official connection with the school, which rightly loves to keep up an unbroken panorama of its teachers, and to vivify its annals with the faces and figures of the personalities who carried on its traditions. But how came Dolben there? It was because he was a poet, — that I knew; — and yet his poems were not known; they were jealously guarded by his family and a few friends: indeed such of his poems as could have come to the eyes of the authorities who sanctioned this memorial would not justify it. There was another reason; and the portrait bears its own credentials; for though you might not perhaps divine the poet in it, you can see the saint, the soul rapt in contemplation, the habit of stainless life, of devotion, of enthusiasm for high ideals. Such a being must have stood out conspicuously among his fellows; the facts of his life would have been the ground of the faith in his genius; and when his early death endeared and sanctified his memory, loving grief would generously grant him the laurels which he had never worn. (Robert Bridges: A School Portrait)
Which is an example of a dynamic SELECT statement? ()
Which three SELECT statements displays 2000 in the format "$2,000.00"? ()