Oracle Practical

8/6/2019 Oracle Practical

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ORACLE SQL and PL/SQL

Practical1. Select all information from SALGRADE table.

GRADE LOSAL HISAL

----------- ---------- -----------------

1 700 1200

2 1201 1400

3 1401 2000

4 2001 3000

5 3001 9999

2. Select all information from the EMP table.

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO

------------ ------------ ----------- --------- ------------- --------- ---------- ------------

7369 SMITH CLERK 7902 17-DEC-80 800 20

7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30

7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30

7566 JONES MANAGER 7839 02-APR-81 2975 20

7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30

7698 BLAKE MANAGER 7839 01-MAY-81 2850 307782 CLARK MANAGER 7839 09-JUN-81 2450 10

7788 SCOTT ANALYST 7566 19-APR-87 3000 20

7839 KING PRESIDENT 17-NOV-81 5000 10

7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30

7876 ADAMS CLERK 7788 23-MAY-87 1100 20

7900 JAMES CLERK 7698 03-DEC-81 950 30

7902 FORD ANALYST 7566 03-DEC-81 3000 20

7934 MILLER CLERK 7782 23-JAN-82 1300 10

14 rows selected.

3. List all employees with the EMPNO, ENAME, SAL and DEPTNO columns.

EMPNO ENAME SAL DEPTNO------------ ------------ ----------- ------------

7369 SMITH 800 20

7499 ALLEN 1600 30

7521 WARD 1250 30

7566 JONES 2975 20

7654 MARTIN 1250 30

7698 BLAKE 2850 30

7782 CLARK 2450 10

7788 SCOTT 3000 20

7839 KING 5000 10

7844 TURNER 1500 30

7876 ADAMS 1100 20

7900 JAMES 950 307902 FORD 3000 20

7934 MILLER 1300 10

4. List DEPARTMENT NO and DEPARTMENT NAME from the DEPT table

DEPTNO DNAME

------------ --------------------

10 ACCOUNTING

20 RESEARCH

30 SALES

40 OPERATIONS

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5. Display all the different JOB types

JOB

------------

CLERK

MANAGER

PRESIDENT

ANALYSTSALESMAN

6. Display all the different JOB types and the DEPARTMENT NO.

JOB DEPTNO

------------ ------------

ANALYST 20

CLERK 10

CLERK 20

CLERK 30

MANAGER 10

MANAGER 20

MANAGER 30

PRESIDENT 10SALESMAN 30

9 rows selected.

7. Select data as displayed.

Who, What and When

------------------------------------------------------------------------------------

SMITH HAS HELD THE POSITION OF CLERK IN DEPT 20 SINCE 13-JUN-83

8. Display NAME, Salary, COMMISSION and Total Remuneration for all employees.

NAME Salary COMMISSION Total Remuneration

------------ ----------- ---------- -----------------

SMITH 800 9600

ALLEN 1600 300 22800

WARD 1250 500 21000

JONES 2975 35700

MARTIN 1250 1400 31800

BLAKE 2850 34200

CLARK 2450 29400

SCOTT 3000 36000

KING 5000 60000

TURNER 1500 0 18000

ADAMS 1100 13200

JAMES 950 11400

FORD 3000 36000

MILLER 1300 15600

14 rows selected.

9. Select all employees who have a salary between 1000 and 2000 from the EMP table.


------------ ------------ ----------- --------- ------------- --------- ---------- ------------

7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30

7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30

7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30

7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30

7876 ADAMS CLERK 7788 23-MAY-87 1100 20

7934 MILLER CLERK 7782 23-JAN-82 1300 10

6 rows selected.

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10. List department numbers and names in department name order.

DEPTNO DNAME

------------ --------------------

10 ACCOUNTING

40 OPERATIONS

20 RESEARCH

30 SALES

11. List the details of the employee in departments 10 and 20 in alphabetical order of the name.


------------ ------------ ----------- --------- ------------- --------- ---------- ------------

7876 ADAMS CLERK 7788 23-MAY-87 1100 20

7782 CLARK MANAGER 7839 09-JUN-81 2450 10

7902 FORD ANALYST 7566 03-DEC-81 3000 20

7566 JONES MANAGER 7839 02-APR-81 2975 20

7839 KING PRESIDENT 17-NOV-81 5000 10

7934 MILLER CLERK 7782 23-JAN-82 1300 10

7788 SCOTT ANALYST 7566 19-APR-87 3000 20

7369 SMITH CLERK 7902 17-DEC-80 800 20

8 rows selected.

12. List names and jobs of all clerks in department 20.

ENAME JOB

------------ -----------

ADAMS CLERK

SMITH CLERK

13. List the employee name and salary increased by 15% and expressed as a whole number.

DEPTNO ENAME SAL PCTSAL

---------- ---------- ---------- ----------

20 SMITH 800 920

30 ALLEN 1600 1840

30 WARD 1250 1438

20 JONES 2975 3421

30 MARTIN 1250 1438

30 BLAKE 2850 3278

10 CLARK 2450 2818

20 SCOTT 3000 3450

10 KING 5000 5750

30 TURNER 1500 1725

20 ADAMS 1100 1265

30 JAMES 950 1093

20 FORD 3000 345010 MILLER 1300 1495

14 rows selected.

14. Display all employees names which have TH or LL in them.

ENAME

------------

SMITH

ALLEN

MILLER

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15. Produce the following output.

EMPLOYEE_AND_JOB

----------------------------------

SMITH CLERK

ALLEN SALESMAN

WARD SALESMAN

JONES MANAGER MARTIN SALESMAN

BLAKE MANAGER

CLARK MANAGER

SCOTT ANALYST

KING PRESIDENT

TURNER SALESMAN

ADAMS CLERK

JAMES CLERK

FORD ANALYST

MILLER CLERK

14 rows selected.

16. Produce the following output.

EMPLOYEE

----------------------

SMITH (Clerk)

ALLEN (Salesman)

WARD (Salesman)

JONES (Manager)

MARTIN (Salesman)

BLAKE (Manager)

CLARK (Manager)

SCOTT (Analyst)

KING (President)

TURNER (Salesman)ADAMS (Clerk)

JAMES (Clerk)

FORD (Analyst)

MILLER (Clerk)

14 rows selected.

17. It has been discovered that the sales people in department 30 are not all male. Produce following output

ENAME DEPTNO JOB NEW_JOB

---------- ---------- --------- ------------

ALLEN 30 SALESMAN Salesperson

WARD 30 SALESMAN Salesperson

MARTIN 30 SALESMAN Salesperson

BLAKE 30 MANAGER Manager

TURNER 30 SALESMAN Salesperson

JAMES 30 CLERK Clerk

6 rows selected.

18. Display each employees name and hire date from dept. 20.

ENAME DATE_HIRED

---------- ------------------------------

SMITH December, Seventeenth 1980

JONES April, Second 1981

SCOTT April, Nineteenth 1987ADAMS May, Twenty-Third 1987

FORD December, Third 1981

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19. Display the date of the next Friday that is six months from the hire date. The resulting date should

appear as Friday, March 12th, 1982. Order the results by hire date.

20. Display each employee name with hire date and salary review date. Assume review date is one year

after hire date. Order the output in ascending review date order.

ENAME HIREDATE REVIEW

---------- --------- ---------SMITH 17-DEC-80 17-DEC-81

ALLEN 20-FEB-81 20-FEB-82

WARD 22-FEB-81 22-FEB-82

JONES 02-APR-81 02-APR-82

BLAKE 01-MAY-81 01-MAY-82

CLARK 09-JUN-81 09-JUN-82

TURNER 08-SEP-81 08-SEP-82

MARTIN 28-SEP-81 28-SEP-82

KING 17-NOV-81 17-NOV-82

JAMES 03-DEC-81 03-DEC-82

FORD 03-DEC-81 03-DEC-82

MILLER 23-JAN-82 23-JAN-83

SCOTT 19-APR-87 19-APR-88ADAMS 23-MAY-87 23-MAY-88

14 rows selected.

21. List all the employees who have a manager.

EMPNO ENAME JOB SAL

------------ ------------ ----------- ---------

7369 SMITH CLERK 800

7499 ALLEN SALESMAN 1600

7521 WARD SALESMAN 1250

7566 JONES MANAGER 2975

7654 MARTIN SALESMAN 1250

7698 BLAKE MANAGER 28507782 CLARK MANAGER 2450

7788 SCOTT ANALYST 3000

7844 TURNER SALESMAN 1500

7876 ADAMS CLERK 1100

7900 JAMES CLERK 950

7902 FORD ANALYST 3000

7934 MILLER CLERK 1300

13 rows selected.

22. Display all employees who were hired during 1981.

EMPNO ENAME HIREDATE SAL COMM DEPTNO

------------ ------------ ------------- --------- ---------- ------------

7499 ALLEN 20-FEB-81 1600 300 30

7521 WARD 22-FEB-81 1250 500 30

7566 JONES 02-APR-81 2975 20

7654 MARTIN 28-SEP-81 1250 1400 30

7698 BLAKE 01-MAY-81 2850 30

7782 CLARK 09-JUN-81 2450 10

7839 KING 17-NOV-81 5000 10

7844 TURNER 08-SEP-81 1500 0 30

7900 JAMES 03-DEC-81 950 30

7902 FORD 03-DEC-81 3000 20

10 rows selected.

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23. Find the minimum salary of all employees.

MINIMUM

----------

800

24. Find the minimum, maximum and average salaries of all employees.

MIN(SAL) MAX(SAL) AVG(SAL)---------- ---------- ----------

800 5000 2073.21429

25. List the minimum and maximum salary for each job types.

JOB MINIMUM MAXIMUM

--------- ---------- ----------

ANALYST 3000 3000

CLERK 800 1300

MANAGER 2450 2975

PRESIDENT 5000 5000

SALESMAN 1250 1600

26. Find out how many managers there are without listing them.

MANAGERS

----------

3

27. Find the average salary and average total remuneration for each job type. Remember SALESMAN earn

commission.

JOB AVSAL AVCOMP

--------- ---------- ----------

ANALYST 3000 36000

CLERK 1037.5 12450

MANAGER 2758.33333 33100

PRESIDENT 5000 60000SALESMAN 1400 23400

28. List lowest paid employees working for each managers. Exclude any groups where the minimum salary

is less than 1000. Sort the output by salary.

MGR MIN(SAL)

---------- ----------

7788 1100

7782 1300

7839 2450

7566 3000

5000

29. Find all departments which have more than three employees.

DEPTNO COUNT(*)

---------- ----------

20 5

30 6

30. Find out the difference between highest and lowest salaries.

DIFFERENCE

----------

4200

31. Display the department that has no employees.

DEPTNO DNAME

---------- --------------

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40 OPERATIONS

32. Check whether all employees numbers are indeed unique.

33. List all employees by name and number along with their managers name and number.

EMPNO ENAME MGRNO MGR_NAME

---------- ---------- ---------- ----------

7369 SMITH 7902 FORD7499 ALLEN 7698 BLAKE

7521 WARD 7698 BLAKE

7566 JONES 7839 KING

7654 MARTIN 7698 BLAKE

7698 BLAKE 7839 KING

7782 CLARK 7839 KING

7788 SCOTT 7566 JONES

7844 TURNER 7698 BLAKE

7876 ADAMS 7788 SCOTT

7900 JAMES 7698 BLAKE

7902 FORD 7566 JONES

7934 MILLER 7782 CLARK

13 rows selected.

34. Modify solution to question 2 to display KING who has no manager.

EMPNO ENAME MGRNO MGR_NAME

---------- ---------- ---------- ----------

7369 SMITH 7902 FORD

7499 ALLEN 7698 BLAKE

7521 WARD 7698 BLAKE

7566 JONES 7839 KING

7654 MARTIN 7698 BLAKE

7698 BLAKE 7839 KING

7782 CLARK 7839 KING

7788 SCOTT 7566 JONES

7839 KING

7844 TURNER 7698 BLAKE

7876 ADAMS 7788 SCOTT

7900 JAMES 7698 BLAKE

7902 FORD 7566 JONES

7934 MILLER 7782 CLARK

14 rows selected.

35. Find the most recently hired employees in each department. Order by hiredate.

DEPTNO ENAME HIREDATE

---------- ---------- ---------30 JAMES 03-DEC-81

10 MILLER 23-JAN-82

20 ADAMS 23-MAY-87

36. Find all employees who joined the company before their managers.

EMPLOYEE HIREDATE MANAGER HIREDATE

---------- --------- ---------- ---------

SMITH 17-DEC-80 FORD 03-DEC-81

ALLEN 20-FEB-81 BLAKE 01-MAY-81

WARD 22-FEB-81 BLAKE 01-MAY-81

JONES 02-APR-81 KING 17-NOV-81

BLAKE 01-MAY-81 KING 17-NOV-81

CLARK 09-JUN-81 KING 17-NOV-81

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6 rows selected.

37. Find the employee(s) who earn the highest salary in each job type. Sort in descending salary order.

JOB ENAME SAL

--------- ---------- ----------

PRESIDENT KING 5000

ANALYST SCOTT 3000ANALYST FORD 3000

MANAGER JONES 2975

SALESMAN ALLEN 1600

CLERK MILLER 1300

6 rows selected.

38. Find the employees who earn the minimum salary for their job. Display the result in ascending order of

salary.

ENAME JOB SAL

---------- --------- ----------

SMITH CLERK 800

WARD SALESMAN 1250MARTIN SALESMAN 1250

CLARK MANAGER 2450

SCOTT ANALYST 3000

FORD ANALYST 3000

KING PRESIDENT 5000

7 rows selected.

39. Show the following details for any employee who earns a salary greater than the average for their

department. Sort in department number order.

ENAME SALARY DEPTNO

---------- ---------- ----------

KING 5000 10

JONES 2975 20

SCOTT 3000 20

FORD 3000 20

ALLEN 1600 30

BLAKE 2850 30

6 rows selected.

40. List all the departments where there are no employees. (Using a sub-query )

DEPTNO DNAME

---------- --------------

40 OPERATIONS

41. Display the following information for the department with the Highest annual remuneration.

DEPTNO COMPENSATION

---------- ------------

30 139200

42. Modify question 4 to display the average salary for the departments.

ENAME SALARY DEPTNO DEPT_AVG

---------- ---------- ---------- ----------

ALLEN 1600 30 1566.66667

BLAKE 2850 30 1566.66667

JONES 2975 20 2175

FORD 3000 20 2175SCOTT 3000 20 2175

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KING 5000 10 2916.66667

6 rows selected.

43. Who are the top 3 earners in the company? Display their name and salary.

ENAME SAL

---------- ----------

SCOTT 3000KING 5000

FORD 3000

44. In which year did most people join the company? Display the year and number of employees.

YEAR NUMBER_OF_EMPLOYEES

---- -------------------

1981 10

45. Write a query to display an * against the row of the most recently hired employee. Display ename,

hiredate and column maxdate. Display the result in hiredate order.

ENAME HIREDATE M

---------- --------- -SMITH 17-DEC-80

ALLEN 20-FEB-81

WARD 22-FEB-81

JONES 02-APR-81

BLAKE 01-MAY-81

CLARK 09-JUN-81

TURNER 08-SEP-81

MARTIN 28-SEP-81

KING 17-NOV-81

FORD 03-DEC-81

JAMES 03-DEC-81

MILLER 23-JAN-82

SCOTT 19-APR-87ADAMS 23-MAY-87 *

14 rows selected.

46. Create a table called projects with columns as specified below. In addition define projid as the

PRIMARY KEY column and ensure that p_end_date dates are not earlier than p_start_date dates.

Column Name Data Type Size

----------------------------------------- -------- -------

PROJID NUMBER 4

P_DESC VARCHAR2 20

P_START_DATE DATE

P_END_DATE DATE

BUDGET_AMOUNT NUMBER 7, 2MAX_NO_STAFF NUMBER 2

47. Create a second table assignments as shown below. Define its projid column as a FOREIGN KEY

which references the project table. Your tables empno column is further FOREIGN KEY to emp.

These two columns (projid and empno) should not allow NULL values.

Column Name Data Type Size

----------------------------------------- -------- -------

PROJID NUMBER 4

EMPNO NUMBER 4

A_START_DATE DATE

A_END_DATE DATE

BILL_RATE NUMBER 4, 2

ASSIGN_TYPE VARCHAR2 2

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48. Add a LONG column called comments to your project table. Also add a NUMBER column called

hours to the assignments table.

49. Use the USER_OBJECTS dictionary view to list the objects owned by your Oracle account. How

many objects do you own?

50. Define a constraint on the assignments table to ensure unique combination of projid and employeenumber.

51. Insert into the projects table the following rows.

PROJID 1 2

P_DESC WRITE C030 COURSE PROOF READ NOTES

P_START_DATE 02-JAN-88 01-JAN-89

P_END_DATE 07-JAN-88 10-JAN-89

BUDGET_AMOUNT 500 600

MAX_NO_STAFF 1 1

52. Insert into the assignments table the following rows.

PROJID 1 1 2

EMPNO 7369 7902 7844A_START_DATE 01-JAN-88 04-JAN-88 01-JAN-89

A_END_DATE 03-JAN-88 07-JAN-88 10-JAN-89

BILL_RATE 50.00 55.00 45.50

ASSIGN_TYPE WR WR PF

HOURS 15 20 30

53. Update assignment type to read WT instead of WR. A type of PF should be left unchanged.

54. Insert two more projects with assignments of your own choice.

55. Define a View which will produce the following output when referenced in a query.

DEPTNO AVERAGE MAXIMUM MINIMUM SUM NO_SALS NO_COMMS

---------- ---------- ---------- ---------- ---------- ---------- ----------

10 2916.66667 5000 1300 8750 3 0

20 2175 3000 800 10875 5 0

30 1566.66667 2850 950 9400 6 4

56. Using the View from question 1, extract the following information. Employee number should be

entered at run-time.

Enter value for empno: 7902

old 1: select emp.empno, ename, job, sal, hiredate, minimum, maximum, average from emp, aggre

where emp.deptno = aggre.deptno and emp.empno = &empno

new 1: select emp.empno, ename, job, sal, hiredate, minimum, maximum, average from emp, aggre

where emp.deptno = aggre.deptno and emp.empno = 7902

EMPNO ENAME JOB SAL HIREDATE MINIMUM MAXIMUM AVERAGE

---------- ---------- --------- --------- --------- ---------- ---------- ----------

7902 FORD ANALYST 3000 03-DEC-81 800 3000 2175

57. Create a View to enforce the following restrictions when Inserting data into the assignments table.

a. Projid must be less than 2000.

b. End date must be after Start date.

c. Valid assign_types are PF, WT, ED.

d. Bill_rate is less than 50.00 from assign_type Pf, less than 60.00 fro assign_type WT, less than

70.00 for assign_type ED.

e. Empno must be valid.

f. Remember WITH CHECK OPTION clause.

58. Insert minimum 3 records satisfying all the assign_type into assignments table using the View created.

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59. Query the Data Dictionary to see your view.

60. Remove the created view and check whether the based table is affected or not.

61. Create a Non Unique Index on the projid column of the assignments table.

62. Query the appropriate Data Dictionary table to display information about your Indexes.

63. Drop the Index.

64. Create a Sequence for the empno column of emp table.

65. Change the increment value to 1 in the created Sequence.

66. Use the created Sequence to Insert the values for the empno.

67. Drop the Sequence.

68. Create the Synonym.

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