Assignment 1 ORA 725
Total : 60 marks.
due date is on 09 Oct, 09.
Save the scripts on a text editor and submit it to my e-mail address with subject as your name and
assignment 1.
Q. Use queries to solve following according to expected output given to you:
a. Create a report that displays all employees, and indicate with the words yes or no whether
they receive a commission. Use the DECODE expression in your query. (5 marks)
LAST_NAME
SALARY
COMMISSION
Ayesha
120000 no
Manzer
12000 no
King
24000 no
Kochhar
17000 no
De Haan
17000 no
Hunold
9000 no
Ernst
6000 no
Lorentz
4200 no
Mourgos
5800 no
Rajs
3500 no
Davies
3100 no
Matos
2600 no
Vargas
2500 no
Zlotkey
10500 yes
Abel
11000 yes
Taylor
8600 yes
Grant
7000 yes
Whalen
4400 no
Hartstein
13000 no
Fay
6000 no
Higgins
12000 no
Gietz
8300 no
b. Show all employees who were hired in the first half of the month (before the 16th of the
month) (5 marks)
LAST_NAME
HIRE_DATE
Manzer
02-OCT-08
De Haan
13-JAN-93
Hunold
03-JAN-90
Lorentz
07-FEB-99
Matos
15-MAR-98
Vargas
09-JUL-98
Abel
11-MAY-96
Higgins
07-JUN-94
Gietz
07-JUN-94
c. Create a report that displays the employee_number, last_name, salary,
department_number, and the average salary in their department for all employees. (5
marks)
EMPLOYEE_ID
LAST_NAME
DEPARTMENT_ID
AVG(S.SALARY)
113 Manzer
70
12000
101 Kochhar
90
19333.3333
103 Hunold
60
6400
174 Abel
80
9600
202 Fay
20
9500
141 Rajs
50
22916.6667
102 De Haan
90
19333.3333
100 King
90
19333.3333
200 Whalen
10
4400
205 Higgins
110
12000
144 Vargas
50
22916.6667
142 Davies
50
22916.6667
124 Mourgos
50
22916.6667
149 Zlotkey
80
9600
77777 Ayesha
50
22916.6667
80
9600
176 Taylor
143 Matos
50
22916.6667
104 Ernst
60
6400
107 Lorentz
60
6400
206 Gietz
80
9600
201 Hartstein
20
9500
d. The HR department wants to determine the names of all employees hired after Davies. Create a query
to display the name and hire date of any employee hired after employee Davies. (5 marks)
LAST_NAME
HIRE_DATE
HArris
29-NOV-08
HArris
29-NOV-08
oiu
01-DEC-08
Lorentz
07-FEB-99
Mourgos
16-NOV-99
Matos
15-MAR-98
Vargas
09-JUL-98
Zlotkey
29-JAN-00
Taylor
24-MAR-98
Grant
24-MAY-99
Cores
06-NOV-08
Fay
17-AUG-97
HArris
29-NOV-08
HArris
29-NOV-08
14 rows selected.
e. The HR department needs to find the names and hire dates for all employees who were hired before
their managers, along with their manager’s names and hire dates. Label the columns Employee, Emp
hired, Manager, and Mgr hired, respectively. (5 marks)
LAST_NAME
HIRE_DATE
LAST_NAME
HIRE_DATE
Hunold
03-JAN-90
De Haan
13-JAN-93
Rajs
17-OCT-95
Mourgos
16-NOV-99
Davies
29-JAN-97
Mourgos
16-NOV-99
Matos
15-MAR-98
Mourgos
16-NOV-99
Vargas
09-JUL-98
Mourgos
16-NOV-99
Abel
11-MAY-96
Zlotkey
29-JAN-00
Taylor
24-MAR-98
Zlotkey
29-JAN-00
Grant
24-MAY-99
Zlotkey
29-JAN-00
8 rows selected.
f. The Accounting department requires an analysis on maximum and minimum salaries by job, manager,
and department. They have asked you to do the following: (5 marks)
Write a query to display the following groupings:
-
Department_id, job_id
Job_id, manager_id
JOB_ID
MIN(SALARY
)
12000
12000
MANAGER_ID DEPARTMENT_ID MAX(SALARY)
AC_MGR
101
ST_MAN
100
IT_Prog
MK_MAN
100
AD_PRES
5800
5800
10800
10800
13000
13000
24000
24000
IT_PROG
102
9000
9000
IT_PROG
103
6000
4200
AC_ACCOUNT
205
8300
8300
SA_REP
100
1000
1000
SA_REP
149
11000
1000
149
5487
5487
AD_VP
100
17000
17000
ST_CLERK
124
5100
4100
SA_MAN
100
10500
10500
MK_REP
201
6000
6000
60
5487
5487
90
17000
17000
AD_VP
ST_CLERK
50
5100
4100
SA_REP
80
11000
8600
10800
10800
IT_Prog
SA_REP
60
1000
1000
ST_MAN
50
5800
5800
SA_MAN
80
10500
10500
AC_MGR
110
12000
12000
g. The HR department wants a list of employees who are up for review in January; so they have
requested you to do the following: (5 marks)
Write a query to display the last names, month of the date of hire, and hire date of those employees
who have been hired in the month of January, irrespective of the year of hire.
LAST_NAME
EXTRACT(MONTHFROMHIRE_DATE)
HIRE_DATE
De Haan
1 13-JAN-93
Hunold
1 03-JAN-90
Davies
1 29-JAN-97
Zlotkey
1 29-JAN-00
h. The CEO needs a report on the top three earners in the company for profit sharing. He has asked you
to provide him with a list. (5 marks)
Write a query to display top three earners in the Employees table. Display their last names and salaries.
LAST_NAME
SALARY
King
24000
Kochhar
17000
De Haan
17000
i.
The benefits for the state of California have been changed based on a local ordinance. So
the benefits representative has asked you to compile a list of the people who are affected.
Write a query to display the employee id and last name of the employees who work in the
state of California. Hint: Use Scalar Subqueries. (5 marks)
EMPLOYEE_ID
LAST_NAME
124 Mourgos
141 Rajs
142 Davies
143 Matos
144 Vargas
j.Show those employees who have a last name starting with letters j, K, L or M. (5 marks)
LAST_NAME
King
Kochhar
Lorentz
Matos
Mourgos
k. Find the number of employees who have a last name that ends with the letter n. Create two possible
solutions. (5 marks)
COUNT(*)
2
l. Create a report that shows name, location, and number of employees for each department. Make sure
that the report also includes departments without employees. (5 marks)
DEPARTMENT_I DEPARTMENT_NAM LOCATION_I COUNT(E.EMPLOYEE_I
D
E
D
D)
80 Sales
2500
4
110 Accounting
1700
1
120 support
2500
0
60 IT
1400
8
10 Administration
1700
0
2500
0
90 Executive
1700
3
20 Marketing
1800
2
70 public relations
1700
0
50 Shipping
1500
5
200 support
10 rows selected.