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單項(xiàng)選擇題

Examine the description of the EMPLOYEES table:
EMP_ID NUMBER(4) NOT NULL
LAST_NAME VARCHAR2(30) NOT NULL
FIRST_NAME VARCHAR2(30)
DEPT_ID NUMBER(2)
JOB_CAT VARCHAR2(30)
SALARY NUMBER(8,2)
Which statement shows the department ID, minimum salary, and maximum salary paid in that department, only of the minimum salary is less then 5000 and the maximum salary is more than 15000?（）

A. SELECT dept_id, MIN(salary(, MAX(salary) FROM employees WHERE MIN(salary) <5000 AND MAX (salary) > 15000;
B. SELECT dept_id, MIN(salary), MAX(salary) FROM employees WHERE MIN(salary) < 5000 AND MAX(salary) > 15000 GROUP BY dept_id;
C. SELECT dept_id, MIN(salary), MAX(salary) FROM employees HAVING MIN(salary) <5000 AND MAX (salary) > 15000;
D. SELECT dept_id, MIN(salary), MAX(salary) FROM employees GROUP BY dept_id HAVING MIN (salary) < 5000 AND MAX(salary)
E. SELECT dept_id, MIN(salary), MAX(salary) FROM employees GROUP BY dept_id, salary HAVING MIN (salary) <5000 AND MAX (salary) > 15000;

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多項(xiàng)選擇題

Examine the structure of the EMPLOYEES, DEPARTMENTS, and LOCATIONS tables.
EMPLOYEES
NOT NULL,
EMPLOYEE_ID NUMBER
Primary Key
VARCHAR2
EMP_NAME
(30)
VARCHAR2
JOB_ID
(20)
SALARY NUMBER
References
MGR_ID NUMBER
EMPLOYEE_ID
column
DEPARTMENT_ID NUMBER Foreign key to
DEPARTMENT_ID
column of the
DEPARTMENTS
table
DEPARTMENTS
NOT NULL, Primary
DEPARTMENT_ID NUMBER
Key
VARCHAR2
DEPARTMENT_NAME
(30)
References NGR_ID
MGR_ID NUMBER
column of
the EMPLOYEES table
Foreign key to
LOCATION_ID NUMBER
LOCATION_ID
column of the
LOCATIONS table
LOCATIONS
NOT NULL, Primary
LOCATION_ID NUMBER
Key
VARCHAR2
CITY
|30)
Which two SQL statements produce the name, department name, and the city of all the employees who earn more then 10000?（）

A. SELECT emp_name, department_name, city FROM employees e JOIN departments d USING (department_id) JOIN locations 1 USING (location_id) WHERE salary > 10000;
B. SELECT emp_name, department_name, city FROM employees e, departments d, locations 1 JOIN ON (e.department_id = d.department id) AND (d.location_id =1.location_id) AND salary > 10000;
C. SELECT emp_name, department_name, city FROM employees e, departments d, locations 1 WHERE salary > 10000;
D. SELECT emp_name, department_name, city FROM employees e, departments d, locations 1 WHERE e.department_id = d.department_id AND d.location_id = 1.location_id AND salary > 10000;
E. SELECT emp_name, department_name, city FROM employees e NATURAL JOIN departments, locations WHERE salary > 10000;
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