Oracle Practice Question

7/27/2019 Oracle Practice Question

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BASES DE DATOS Ingeniería Técnica Informática

Asignatura Obligatoria: 4.5 + 4.5 créditos (Segundo cuatrimestre)Curso académico 2000/2002

Relación de Ejercicios Prácticos

TEMA 1. MANDATO SELECT BÁSICOTTEEMMAA 11.. MMAANNDDAATTOO SSEELLEECCTT BBÁÁSSIICCOO 1.1.Initiate a SQL*Plus session using the user ID and password provided by theinstructor.

1.2.SQL*Plus commands access the database. True/False

1.3.Will the SELECT statement execute successfully? True/False

SQL> SELECT ename, job, sal SalaryFROM emp;

1.4.Will the SELECT statement execute successfully? True/False

SQL>SELECT *FROM salgrade;

1.5.There are three coding errors in this statement. Can you identify them?

SQL> SELECT empno,enamesalary x 12 ANNUAL SALARYFROM emp;

1.6.Show the structure of the DEPT table. Select all data from the DEPT table.

Name Null? Type----------------- --------------- ------------DEPTNO NOT NULL NUMBER(2)DNAME VARCHAR2(14)LOC VARCHAR2(13)

DEPTNO DNAME LOC------------ ------------------- -------------

10 ACCOUNTING NEWYORK 20 RESEARCH DALLAS30 SALES CHICAGO40 OPERATIONS BOSTON

1.7.Show the structure of the EMP table. Create a query to display the name,

job, hire date and employee number for each employee, with employee numberappearing first. Save your SQL statement to a file named p1q7.sql .

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Name Null? Type----------------- --------------- -------------EMPNO NOT NULL NUMBER(4)ENAME VARCHAR2(10)

JOB VARCHAR2(9)MGR NUMBER(4)HIREDATE DATESAL NUMBER(7,2)COMM NUMBER(7,2)DEPTNO NOT NULL NUMBER(2)

1.8.Run your query in the file p1q7.sql .

EMPNO ENAME JOB HIREDATE

----------- ----------- ---------------- ----------------7839 KING PRESIDENT 17-NOV-817698 BLAKE MANAGER 01-MAY-817782 CLARK MANAGER 09-JUN-817566 JONES MANAGER 02-APR-817654 MARTIN SALESMAN 28-SEP-817499 ALLEN SALESMAN 20-FEB-817844 TURNER SALESMAN 08-SEP-817900 JAMES CLERK 03-DEC-817521 WARD SALESMAN 22-FEB-817902 FORD ANALYST 03-DEC-81

7369 SMITH CLERK 17-DEC-807788 SCOTT ANALYST 09-DEC-827876 ADAMS CLERK 12-JAN-837934 MILLER CLERK 23-JAN-82

14 rows selected.

1.9.Create a query to display unique jobs from the EMP table. JOB-----------

ANALYSTCLERK MANAGER PRESIDENTSALESMAN

1.10.Load p1q7.sql into the SQL buffer. Name the column headings Emp #,Employee, Job, and Hire Date, respectively. Rerun your query.

Emp # Employee JobHire Date

--------- ------- ---------- --------------7839 KING PRESIDENT 17-NOV-81

7698 BLAKE MANAGER 01-MAY-81

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7782 CLARK MANAGER 09-JUN-81

7566 JONES MANAGER 02-APR-81

7654 MARTIN SALESMAN 28-SEP-81

7499 ALLEN SALESMAN 20-FEB-81

7844 TURNER SALESMAN 08-SEP-817900 JAMES CLERK 03-DEC-81

7521 WARD SALESMAN 22-FEB-81

7902 FORD ANALYST 03-DEC-81

7369 SMITH CLERK 17-DEC-80

7788 SCOTT ANALYST 09-DEC-82

7876 ADAMS CLERK 12-JAN-83

7934 MILLER CLERK 23-JAN-82

14 rows selected.

1.11.Display the name concatenated with the job, separated by a comma andspace, and name the column Employee and Title.

Employee and Title

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

KING, PRESIDENT

BLAKE, MANAGER

CLARK, MANAGER

JONES, MANAGER

MARTIN, SALESMAN

ALLEN, SALESMAN

TURNER, SALESMANJAMES, CLERK

WARD, SALESMAN

FORD, ANALYST

SMITH, CLERK

SCOTT, ANALYST

ADAMS, CLERK

MILLER, CLERK

14 rows selected.

1.12.Create a query to display all the data from the EMP table. Separate eachcolumn by a comma. Name the column THE_OUTPUT.

THE_OUTPUT-------------------------------------------------7839,KING,PRESIDENT,,17-NOV-81,5000,,107698,BLAKE,MANAGER,7839,01-MAY-81,2850,,30

7782,CLARK,MANAGER,7839,09-JUN-81,2450,,107566,JONES,MANAGER,7839,02-APR-81,2975,,207654,MARTIN,SALESMAN,7698,28-SEP-81,1250,1400,30

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7499,ALLEN,SALESMAN,7698,20-FEB-81,1600,300,307844,TURNER,SALESMAN,7698,08-SEP-81,1500,0,307900,JAMES,CLERK,7698,03-DEC-81,950,,307521,WARD,SALESMAN,7698,22-FEB-81,1250,500,30

7902,FORD,ANALYST,7566,03-DEC-81,3000,,207369,SMITH,CLERK,7902,17-DEC-80,800,,207788,SCOTT,ANALYST,7566,09-DEC-82,3000,,207876,ADAMS,CLERK,7788,12-JAN-83,1100,,207934,MILLER,CLERK,7782,23-JAN-82,1300,,1014 rows selected.

TEMA 2.RESTTRIC IIÓN Y ORDENACIÓN DE LOS DATOSRECUPERADOS.

TTEEMMAA 22..R R EESSTR R IICCCCCIÓÓNN YY OOR R DDEENNAACCIIÓÓNN DDEE LLOOSS DDAATTOOSS R R EECCUUPPEER R AADDOOSS..

2.1.Create a query to display the name and salary of employees earning more

than $2850. Save your SQL statement to a file named p2q1.sql . Run your query. ENAME SAL------------ ----KING 5000JONES 2975FORD 3000SCOTT 3000

2.2.Create a query to display the employee name and department number for

employee number 7566.

ENAME DEPTNO----------- ------JONES 20

2.3.Modify p2q1.sql to display the name and salary for all employees whosesalary is not in the range of $1500 and $2850. Resave your SQL statement to afile named p2q3.sql . Rerun your query.

ENAME SAL------------ -----KING 5000JONES 2975MARTIN 1250JAMES 950

WARD 1250FORD 3000SMITH 800

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SCOTT 3000ADAMS 1100MILLER 130010 rows selected.

2.4.Display the employee name, job and start date of employees hired betweenFebruary 20, 1981, and May 1, 1981. Order the query in ascending order of startdate.

ENAME JOB HIREDATE------------ ----------------- ----------------ALLEN SALESMAN 20-FEB-81WARD SALESMAN 22-FEB-81JONES MANAGER 02-APR-81

BLAKE MANAGER 01-MAY-81

2.5.Display the employee name and department number of all employees indepartments 10 and 30 in alphabetical order by name.

ENAME DEPTNO-------------- -----------KING 10BLAKE 30CLARK 10

MARTIN 30ALLEN 30TURNER 30JAMES 30WARD 30MILLER 109 rows selected.

2.6.Modify p2q3.sql to list the name and salary of employees who earn more than$1500 and are in department 10 or 30. Label the columns Employee and Monthly

Salary, respectively. Resave your SQL statement to a file named p2q6.sql . Rerunyour query.

Employee Monthly Salary--------------- -------------------KING 5000BLAKE 2850CLARK 2450ALLEN 1600

2.7 Display the name and hire date of every employee who was hired in 1982. ENAME HIREDATE

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------------ ----------------SCOTT 09-DEC-82MILLER 23-JAN-82

2.8.Display the name and title of all employees who do not have a manager. ENAME JOB------------ ---------KING PRESIDENT

2.9.Display the name, salary, and commission for all employees who earncommissions. Sort data in descending order of salary and commissions.

ENAME SAL.... COMM----------- --------- ---------ALLEN 1600 300TURNER 1500 0MARTIN 1250 1400WARD 1250 500

2.10.Display the names of all employees where the third letter of their name is an A.

ENAME

-----------BLAKECLARK ADAMS

2.11.Display the name of all employees that have two Ls in their name and are indepartment 30 or their manager is 7782.

ENAME----------

ALLENMILLER

2.12.Display the name, job, and salary for all employees whose job is Clerk orAnalyst and their salary is not equal to $1000, $3000, or $5000.

ENAME JOB SAL------------ ------- -----JAMES CLERK 950SMITH CLERK 800

ADAMS CLERK 1100MILLER CLERK 1300

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2.13.Modify p2q6.sql to display the name, salary, and commission for allemployees whose commission amount is greater than their salary increased by10%. Rerun your query. Resave your query as p2q13.sql.

ENAME SAL COMM------------- ----- ----------MARTIN 1250 1400

TEMA 3. FUNCIONES DE SQL QUE ACTÚAN SOBRE UNA SOLAFILA.

TTEEMMAA 33.. FFUUNNCCIIOONNEESS DDEE SSQQLL QQUUEE AACCTTÚÚAANN SSOOBBR R EE UUNNAA SSOOLLAA FFIILLAA..

3.1.Write a query to display the current date. Label the column Date.

Date

--------------28-OCT-97

3.2.Display the employee number, name, salary, and salary increase by 15%expressed as a whole number. Label the column New Salary. Save your SQLstatement to a file named p3q2.sql .

3.3.Run your query in the file p3q2.sql .

EMPNO ENAME SAL New Salary----------- ------------ ----- --------------7839 KING 5000 57507698 BLAKE 2850 32787782 CLARK 2450 28187566 JONES 2975 34217654 MARTIN 1250 14387499 ALLEN 1600 18407844 TURNER 1500 17257900 JAMES 950 10937521 WARD 1250 14387902 FORD 3000 34507369 SMITH 800 9207788 SCOTT 3000 34507876 ADAMS 1100 12657934 MILLER 1300 1495

14 rows selected.

3.4.Modify your query p3q2.sql to add an additional column that will subtractthe old salary from the new salary. Label the column Increase. Rerun your

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query. EMPNO ENAME SAL New Salary Increase----------- ------------ ------- ---------- --------

7839 KING 5000 5750 7507698 BLAKE 2850 3278 4287782 CLARK 2450 2818 3687566 JONES 2975 3421 446

3.5.Display the employee’s name, hire date, and salary review date, which is thefirst Monday after six months of service. Label the column REVIEW. Formatthe dates to appear in the format similar to “Sunday, the Seventh of September,1981.”

ENAME HIREDATE REVIEW----------- ----------------- -------------------------------------------------KING 17-NOV-81 Monday, the Twenty-Fourth of May, 1982BLAKE 01-MAY-81 Monday, the Second of November, 1981CLARK 09-JUN-81 Monday, the Fourteenth of December, 1981JONES 02-APR-81 Monday, the Fifth of October, 1981MARTIN 28-SEP-81 Monday, the Twenty-Ninth of March, 1982ALLEN 20-FEB-81 Monday, the Twenty-Fourth of August, 1981TURNER 08-SEP-81 Monday, the Fifteenth of March, 1982JAMES 03-DEC-81 Monday, the Seventh of June, 1982WARD 22-FEB-81 Monday, the Twenty-Fourth of August, 1981

FORD 03-DEC-81 Monday, the Seventh of June, 1982SMITH 17-DEC-80 Monday, the Twenty-Second of June, 1981SCOTT 09-DEC-82 Monday, the Thirteenth of June, 1983ADAMS 12-JAN-83 Monday, the Eighteenth of July, 1983MILLER 23-JAN-82 Monday, the Twenty-Sixth of July, 1982

14 rows selected.

3.6.For each employee display the employee name and calculate the number of months between today and the date the employee was hired. Label the columnMONTHS_WORKED. Order your results by the number of months employed.Round the number of months up to the closest whole number.

ENAME MONTHS_WORKED----------- ---------------------------ADAMS 177SCOTT 178MILLER 188JAMES 190FORD 190KING 191MARTIN 192

TURNER 193CLARK 196BLAKE 197

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JONES 198WARD 199ALLEN 199SMITH 202

14 rows selected

3.7.Write a query that produces the following for each employee:

<employee name> earns <salary> monthly but wants <3 times salary>. Label thecolumn Dream Salaries.

Dream Salaries----------------------------------------------------KING earns $5,000.00 monthly but wants $15,000.00.BLAKE earns $2,850.00 monthly but wants $8,550.00.

CLARK earns $2,450.00 monthly but wants $7,350.00.JONES earns $2,975.00 monthly but wants $8,925.00.MARTIN earns $1,250.00 monthly but wants $3,750.00.ALLEN earns $1,600.00 monthly but wants $4,800.00TURNER earns $1,500.00 monthly but wants $4,500.00.JAMES earns $950.00 monthly but wants $2,850.00.WARD earns $1,250.00 monthly but wants $3,750.00.FORD earns $3,000.00 monthly but wants $9,000.00.SMITH earns $800.00 monthly but wants $2,400.00.SCOTT earns $3,000.00 monthly but wants $9,000.00.ADAMS earns $1,100.00 monthly but wants $3,300.00

MILLER earns $1,300.00 monthly but wants $3,900.00.14 rows selected.

3.8.Create a query to display name and salary for all employees. Format thesalary to be 15 characters long, left-padded with $. Label the column SALARY.

ENAME SALARY------------- ---------------SMITH $$$$$$$$$$$$800ALLEN $$$$$$$$$$$1600

WARD $$$$$$$$$$$1250JONES $$$$$$$$$$$2975MARTIN $$$$$$$$$$$1250BLAKE $$$$$$$$$$$2850CLARK $$$$$$$$$$$2450SCOTT $$$$$$$$$$$3000KING $$$$$$$$$$$5000TURNER $$$$$$$$$$$1500ADAMS $$$$$$$$$$$1100JAMES $$$$$$$$$$$$950FORD $$$$$$$$$$$3000

MILLER $$$$$$$$$$$130014 rows selected.

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3.9.Write a query that will display the employee's name with the first lettercapitalized and all other letters lowercase and the length of their name, for allemployees whose name starts with J , A, or M . Give each column an appropriatelabel.

Name Length---------- ------Jones 5Martin 6Allen 5James 5Adams 5Miller 66 rows selected.

3.10.Display the name, hire date, and day of the week on which the employeestarted. Label the column DAY. Order the results by the day of the week starting with Monday.

ENAME HIREDATE DAY

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

MARTIN 28-SEP-81 MONDAY

CLARK 09-JUN-81 TUESDAY

KING 17-NOV-81 TUESDAY

TURNER 08-SEP-81 TUESDAY

SMITH 17-DEC-80 WEDNESDAY

ADAMS 12-JAN-83 WEDNESDAY

JONES 02-APR-81 THURSDAY

FORD 03-DEC-81 THURSDAY

SCOTT 09-DEC-82 THURSDAY

JAMES 03-DEC-81 THURSDAY

ALLEN 20-FEB-81 FRIDAY

BLAKE 01-MAY-81 FRIDAY

MILLER 23-JAN-82 SATURDAY

WARD 22-FEB-81 SUNDAY

14 rows selected

3.11.Create a query that will display the employee name and commissionamount. If the employee does not earn commission, put “No Commission.” Labelthe column COMM.

ENAME COMM

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

SMITH No Commission

ALLEN 300

WARD 500

JONES No Commission

MARTIN 1400

BLAKE No Commission

CLARK No Commission

Página 10



SCOTT No Commission

KING No Commission

TURNER 0

ADAMS No Commission

JAMES No CommissionFORD No Commission

MILLER No Commission

14 rows selected.

TEMA 4. OBTENIENDO DATOS DESDE MÚLTIPLES TABLAS.TTEEMMAA 44.. OOBBTTEENNIIEENNDDOO DDAATTOOSS DDEESSDDEE MMÚÚLLTTIIPPLLEESS TTAABBLLAASS.. 4.1.Write a query to display the name, department number, and department

name for all employees.

ENAME DEPTNO DNAME------------ ------------ -------------------CLARK 10 ACCOUNTINGKING 10 ACCOUNTINGMILLER 10 ACCOUNTINGSMITH 20 RESEARCHADAMS 20 RESEARCHFORD 20 RESEARCHSCOTT 20 RESEARCH

JONES 20 RESEARCHALLEN 30 SALESBLAKE 30 SALESMARTIN 30 SALESJAMES 30 SALESTURNER 30 SALESWARD 30 SALES14 rows selected.

4.2.Create a unique listing of all jobs that are in department 30.

JOB LOC-------------- -------------CLERK CHICAGOMANAGER CHICAGOSALESMAN CHICAGO

4.3. Write a query to display the employee name, department name, and locationof all employees who earn a commission.

ENAME DNAME LOC------------- ------------- -------------ALLEN SALES CHICAGO

Página 11



WARD SALES CHICAGOMARTIN SALES CHICAGOTURNER SALES CHICAGO

4.4.Display the employee name and department name for all employees who havean A in their name. Save your SQL statement in a file called p4q4.sql .

ENAME DNAME------------ ------------CLARK ACCOUNTINGADAMS RESEARCH

ALLEN SALESWARD SALESJAMES SALESMARTIN SALESBLAKE SALES7 rows selected.

4.5.Write a query to display the name, job, department number, and departmentname for all employees who work in DALLAS.

ENAME JOB DEPTNO DNAME----------- --------- ------------- ----------SMITH CLERK 20 RESEARCHADAMS CLERK 20 RESEARCHFORD ANALYST 20 RESEARCHSCOTT ANALYST 20 RESEARCHJONES MANAGER 20 RESEARCH

4.66..DDiissppllaayy tthhee eemmppllooyyeeee nnaammee aanndd eemmppllooyyeeee nnuummbbeerr aalloonngg wwiitthh tthheeiirr mmaannaaggeerr’’ss nnaammee aanndd mmaannaaggeerr nnuummbbeerr.. LLaabbeell tthhee ccoolluummnnss EEmmppllooyyeeee,, EEmmpp##,,

MMaannaaggeerr,, aanndd MMggrr##,, rreessppeeccttiivveellyy.. SSaavvee yyoouurr SSQQLL ssttaatteemmeenntt ttoo aa f f iillee ccaalllleedd p p44qq6 6 . .ssqql l ..

Employee Emp# Manager Mgr#-------------- --------- ------------ ---------SCOTT 7788 JONES 7566FORD 7902 JONES 7566ALLEN 7499 BLAKE 7698WARD 7521 BLAKE 7698JAMES 7900 BLAKE 7698TURNER 7844 BLAKE 7698MARTIN 7654 BLAKE 7698MILLER 7934 CLARK 7782ADAMS 7876 SCOTT 7788

Página 12



JONES 7566 KING 7839CLARK 7782 KING 7839BLAKE 7698 KING 7839SMITH 7369 FORD 7902

13 rows selected.

4.7.Modify p4q6.sql to display all employees including King, who has nomanager. Resave as p4q7.sql . Run p4q7.sql .

Employee Emp# Manager Mgr#------------- ---------- ------------ ---------SCOTT 7788 JONES 7566FORD 7902 JONES 7566ALLEN 7499 BLAKE 7698

WARD 7521 BLAKE 7698JAMES 7900 BLAKE 7698TURNER 7844 BLAKE 7698MARTIN 7654 BLAKE 7698MILLER 7934 CLARK 7782ADAMS 7876 SCOTT 7788JONES 7566 KING 7839CLARK 7782 KING 7839BLAKE 7698 KING 7839SMITH 7369 FORD 7902KING 7839

14 rows selected.

4.8.Create a query that will display the employee name, department number,and all the employees that work in the same department as a given employee.Give each column an appropriate label.

DEPARTMENT EMPLOYEE COLLEAGUE--------------------- ------------------ ---------

10 CLARK KING10 CLARK MILLER 10 KING CLARK 10 KING MILLER 10 MILLER CLARK 10 MILLER KING20 ADAMS FORD20 ADAMS JONES20 ADAMS SCOTT20 ADAMS SMITH20 FORD ADAMS

20 FORD JONES20 FORD SCOTT

Página 13



56 rows selected.

4.9.Show the structure of the SALGRADE table. Create a query that will displaythe name, job, department name, salary, and grade for all employees.

Name Null? Type------------ ---------- -------GRADE NUMBER LOSAL NUMBER HISAL NUMBER

ENAME JOB DNAME SAL GRADE------------ ----------------- -------------------- --------- -----MILLER CLERK ACCOUNTING 1300 2

CLARK MANAGER ACCOUNTING 2450 4KING PRESIDENT ACCOUNTING 5000 5SMITH CLERK RESEARCH 800 1SCOTT ANALYST RESEARCH 3000 4FORD ANALYST RESEARCH 3000 4ADAMS CLERK RESEARCH 1100 1JONES MANAGER RESEARCH 2975 4JAMES CLERK SALES 950 1BLAKE MANAGER SALES 2850 4TURNER SALESMAN SALES 1500 3ALLEN SALESMAN SALES 1600 3

WARD SALESMAN SALES 1250 2MARTIN SALESMAN SALES 1250 214 rows selected.

4.10.Create a query to display the name and hire date of any employee hiredafter employee Blake.

ENAME HIREDATE------------ -----------------SMITH 17-DEC-80ALLEN 20-FEB-81WARD 22-FEB-81JONES 02-APR-81

4.11.Display all employees’ names and hire dates along with their manager’sname and hire date for all employees who were hired before their managers.

Label the columns Employee, Emp Hiredate, Manager, and Mgr Hiredate,respectively.

Página 14



Employee Emp Hiredate Manager Mgr Hiredate------------- --------------- ------------- ------------ALLEN 20-FEB-81 BLAKE 01-MAY-81WARD 22-FEB-81 BLAKE 01-MAY-81

JONES 02-APR-81 KING 17-NOV-81CLARK 09-JUN-81 KING 17-NOV-81BLAKE 01-MAY-81 KING 17-NOV-81SMITH 17-DEC-80 FORD 03-DEC-816 rows selected.

4.12.Create a query that displays the employees name and the amount of thesalaries of the employees are indicated through asterisks. Each asterisk signifiesa hundred dollars. Sort the data in descending order of salary. Label the columnEMPLOYEE_AND_THEIR_SALARIES.

EMPLOYEE_AND_THEIR_SALARIES------------------------------------------------------------------------------------KING *************************************************FORD *****************************SCOTT *****************************JONES ****************************BLAKE ***************************CLARK ***********************ALLEN ***************TURNER **************

MILLER ************MARTIN ***********WARD ***********ADAMS **********JAMES ********SMITH *******14 rows selected.

TEMA 5. FUNCIONES DE AGGREGACIÓN.TTEEMMAA 55.. FFUUNNCCIIOONNEESS DDEE AAGR R EEGGAACCIIÓÓNN.. Determine the validity of the following statements. Circle either True or False. 5.1.Group functions work across many rows to produce one result.True/False

5.2.Group functions include nulls in calculations.True/False

5.3.The WHERE clause restricts rows prior to inclusion in a group calculation.True/False

5.4.Display the highest, lowest, sum, and average salary of all employees. Labelthe columns Maximum, Minimum, Sum, and Average, respectively. Round yourresults to the decimal position. Save your SQL statement in a file called p5q4.sql .

Maximum Minimum Sum Average------------- ------------- - -------- ------------

Página 15



5000 800 29025 2073

5.5.Modify p5q4.sql to display the minimum, maximum, sum, and average salaryfor each job type. Resave to a file called p5q5.sql . Rerun your query.

JOB Maximum Minimum Sum Average------------------ ------------- ------------- -------- --------ANALYST 3000 3000 6000 3000CLERK 1300 800 4150 1038MANAGER 2975 2450 8275 2758PRESIDENT 5000 5000 5000 5000SALESMAN 1600 1250 5600 1400

5.6.Write a query to display the number of people with the same job.

JOB COUNT(*)---------------- --------------ANALYST 2CLERK 4MANAGER 3PRESIDENT 1SALESMAN 4

5.7.Determine the number of managers without listing them. Label the column

Number of Managers. Number of Managers--------------------------

6

5.8.Write a query that will display the difference between the highest and lowestsalaries. Label the column DIFFERENCE.

DIFFERENCE---------------- --

4200

5.9.Display the manager number and the salary of the lowest paid employee forthat manager. Exclude anyone where the manager id is not known. Excludeany groups where the minimum salary is less than $1000. Sort the output indescending order of salary.

MGR MIN(SAL)

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

7566 3000

7839 2450

7782 13007788 1100

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5.10.Write a query to display the department name, location name, number of employees, and the average salary for all employees in that department. Labelthe columns’ dname, loc, Number of People, and Salary, respectively.

DNAME LOC Number of People Salary--------------------- ------------------ ----------------------- --------ACCOUNTING NEW YORK 3 2916.67RESEARCH DALLAS 5 2175SALES CHICAGO 6 1566.67

5.11.Create a query that will display the total number of employees and of thattotal the number who were hired in 1980, 1981, 1982, and 1983. Give appropriatecolumn headings.

TOTAL 1980 1981 1982 1983---------- -------- ------- -------- --------

14 1 10 2 1

5.12.Create a matrix query to display the job, the salary for that job based upondepartment number and the total salary for that job for all departments, givingeach column an appropriate heading.

Job Dept 10 Dept 20 Dept 30 Total----------------- ---------- -------- ----------- -------ANALYST 6000 6000CLERK 1300 1900 950 4150MANAGER 2450 2975 2850 8275PRESIDENT 5000 5000SALESMAN 5600 5600

TEMA 6. SUBCONSULTAS.TTEEMMAA 66.. SSUUBBCCOONNSSUULLTTAASS.. 6.1.Write a query to display the employee name and hire date for all employees

in the same department as Blake. Exclude Blake.

ENAME HIREDATE--------------- ---------------MARTIN 28-SEP-81ALLEN 20-FEB-81TURNER 08-SEP-81JAMES 03-DEC-81WARD 22-FEB-816 rows selected.

6.2.Create a query to display the employee number and name for all employeeswho earn more than the average salary. Sort the results in descending order of

Página 17



salary.

EMPNO ENAME------------ -----------

7839 KING7902 FORD7788 SCOTT7566 JONES7698 BLAKE7782 CLARK

6 rows selected.

6.3. Write a query that will display the employee number and name for allemployees who work in a department with any employee whose name contains a

T . Save your SQL statement in a file called p6q3.sql.

EMPNO ENAME------------ --------

7566 JONES7788 SCOTT7876 ADAMS7369 SMITH7902 FORD7698 BLAKE

7654 MARTIN7499 ALLEN

7844 TURNER 7900 JAMES7521 WARD

11 rows selected.

6.4.Display the employee name, department number, and job title for all

employees whose department location is Dallas.

ENAME DEPTNO JOB ------------- ------------- ---------JONES 20 MANAGER FORD 20 ANALYSTSMITH 20 CLERK SCOTT 20 ANALYSTADAMS 20 CLERK

6.5.Display the employee name and salary of all employees who report to King.

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ENAME SAL------------ --------BLAKE 2850CLARK 2450

JONES 2975

6.6.Display the department number, name, and job for all employees in the Salesdepartment.

DEPTNO ENAME JOB------------- ------------- ---------

30 BLAKE MANAGER 30 MARTIN SALESMAN30 ALLEN SALESMAN

30 TURNER SALESMAN30 JAMES CLERK 30 WARD SALESMAN

6 rows selected.

6.7.Modify p6q3.sql to display the employee number, name, and salary for allemployees who earn more than the average salary and who work in adepartment with any employee with a T in their name. Resave as p6q7.sql . Rerunyour query.

EMPNO ENAME SAL------------ ------------ -------7566 JONES 29757788 SCOTT 30007902 FORD 30007698 BLAKE 2850

TEMA 7. SUBCONSULTAS CON MÚLTIPLES COLUMNAS.TTEEMMAA 77.. SSUUBBCCOONNSSUULLTTAASS CCOONN MMÚÚLLTTIIPPLLEESS CCOOLLUUMMNNAASS.. 7.1.Write a query to display the name, department number, and salary of anyemployee whose department number and salary matches both the departmentnumber and salary of any employee who earns a commission.

ENAME DEPTNO SAL------------ ------------- --------MARTIN 30 1250WARD 30 1250

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TURNER 30 1500ALLEN 30 1600

7.2.Display the name, department name, and salary of any employee whosesalary and commission matches both the salary and commission of any employeelocated in Dallas.

ENAME DNAME SAL------------- ---------------- ------SMITH RESEARCH 800ADAMS RESEARCH 1100JONES RESEARCH 2975FORD RESEARCH 3000SCOTT RESEARCH 3000

7.3.Create a query to display the name, hire date, and salary for all employeeswho have both the same salary and commission as Scott.

ENAME HIREDATE SAL------------- ---------------- ----------FORD 03-DEC-81 3000

7.4.Create a query to display the employees that earn a salary that is higher than

the salary of any of the CLERKS. Sort the results on salary from highest tolowest.

ENAME JOB SAL-------------- ---------------- ---------KING PRESIDENT 5000FORD ANALYST 3000SCOTT ANALYST 3000JONES MANAGER 2975BLAKE MANAGER 2850CLARK MANAGER 2450

ALLEN SALESMAN 1600TURNER SALESMAN 15008 rows selected.

TEMA 8. SALIDA DE DATOS A MEDIDA.TTEEMMAA 88.. SSAALLIIDDAA DDEE DDAATTOOSS AA MMEEDDIIDDAA.. Determine whether the following statements are true or false: 8.1.A single ampersand substitution variable prompts only once.

True/False

8.2.The ACCEPT command is a SQL command.

True/False8.3.Write a script file to display the employee name, job, and hire date for allemployees who started between a given range. Concatenate the name and job

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together, separated by a space and comma and label the column Employees.Prompt the user for the two ranges using the ACCEPT command. Use theformat MM/DD/YY. Save the script file as p8q3.sql .

Please enter the low date range ('MM/DD/YY'): 01/01/81Please enter the high date range ('MM/DD/YY'): 01/01/82EMPLOYEES HIREDATE----------------- ---------------KING, PRESIDENT 17-NOV-81BLAKE, MANAGER 01-MAY-81CLARK, MANAGER 09-JUN-81JONES, MANAGER 02-APR-81MARTIN, SALESMAN 28-SEP-81ALLEN, SALESMAN 20-FEB-81TURNER, SALESMAN 08-SEP-81JAMES, CLERK 03-DEC-81WARD, SALESMAN 22-FEB-81FORD, ANALYST 03-DEC-8110 rows selected.

8.4.Write a script to display the employee name, job, and department name. Thesearch condition should allow for case_insensitive name searches. Save the scriptfile as p8q4.sql .

Please enter the location name: DallasEMPLOYEE NAME JOB DEPARTMENT NAME----------------- ------------------- ------------------------------JONES MANAGER RESEARCHFORD ANALYST RESEARCHSMITH CLERK RESEARCHSCOTT ANALYST RESEARCHADAMS CLERK RESEARCH

8.5.Modify p8q4.sql to create a report containing the department name, employeename, hire date, salary and each employees annual salary for all employees in agiven location. Prompt the user for the location. Label the columnsDEPARTMENT NAME, EMPLOYEE NAME, START DATE, SALARY andANNUAL SALARY, placing the labels on multiple lines. Resave the script as

p8q5.sql . Please enter the location name: ChicagoDEPARTMENT EMPLOYEE START ANNUAL

NAME NAME DATE SALARY SALARY------------- -------------- ------------------ ------------- -------------

SALES BLAKE 01-MAY-81 $2,850.00 $34,200.00MARTIN 28-SEP-81 $1,250.00 $15,000.00ALLEN 20-FEB-81 $1,600.00 $19,200.00TURNER 08-SEP-81 $1,500.00 $18,000.00

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JAMES 03-DEC-81 $950.00 $11,400.00WARD 22-FEB-81 $1,250.00 $15,000.00

TEMA 9. MANIPULACIÓN DE DATOS.TTEEMMAA 99.. MMAANNIIPPUULLAACCIIÓÓNN DDEE DDAATTOOSS..

Insert data into the MY_EMPLOYEE table. 9.1.Run the /home/db/InformaciónGeneral/practicasdb2000/practica9/lab9_1.sql script to build the MY_EMPLOYEE table that will be used for the lab.

9.2.Describe the structure of the MY_EMPLOYEE table to identify the columnnames.

Name Null? Type----------------- --------------- ------------------ID NOT NULL NUMBER(4)LAST_NAME VARCHAR2(25)FIRST_NAME VARCHAR2(25)USERID VARCHAR2(8)SALARY NUMBER(9,2)

9.3.Add the first row of data to the MY_EMPLOYEE table from the sample databelow. Do not list the columns in the INSERT clause.

ID LAST_NAME FIRST_NAME USERID SALARY

1 Patel Ralph rpatel 795

2 Dancs Betty bdancs 860

3 Biri Ben bbiri 1100

4 Newman Chad cnewman 750

5 Ropeburn Audry aropebur 1550

9.4.Populate the MY_EMPLOYEE table with the second row of sample datafrom the list above. This time, list the columns explicitly in the INSERT clause.

9.5.Confirm your addition to the table.ID LAST_NAME FIRST_NAME USERID SALARY

----- ------------------ ------------------- ------------ -------------1 Patel Ralph rpatel 7952 Dancs Betty bdancs 860

9.6. Create a script named loademp.sql to load rows into the MY_EMPLOYEEtable interactively. Prompt the user for the employee’s first name, last name, andsalary. Concatenate the first letter of the first name and the first sevencharacters of the last name to produce the userid. 9.7.Populate the table with the next two rows of sample data by running the

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script you created.

9.8.Confirm your additions to the table.

ID LAST_NAME FIRST_NAME USERID SALARY----- ------------------ ------------------- ------------ -------------1 Patel Ralph rpatel 7952 Dancs Betty bdancs 8603 Biri Ben bbiri 11004 Newman Chad cnewman 750

9.9.Make the data additions permanent.

Update and delete data in the MY_EMPLOYEE table.

9.10.Change the last name of employee 3 to Drexler.9.11.Change the salary to 1000 for all employees with a salary less than 900.

9.12.Verify your changes to the table.

LAST_NAME SALARY------------------ ------------Patel 1000Dancs 1000Biri 1100

Newman 1000

9.13.Delete Betty Dancs from the MY_EMPLOYEE table.

9.14.Confirm your changes to the table.

ID LAST_NAME FIRST_NAME USERID SALARY------ ------------------ ------------------- ------------ -------------

1 Patel Ralph rpatel 10003 Drexler Ben bbiri 11004 Newman Chad cnewman 1000

9.15. Commit all pending changes. Control data transaction to the MY_EMPLOYEE tables.

9.16.Populate the table with the last row of sample data by running the scriptyou created in step 6.

9.17.Confirm your addition to the table.

ID LAST_NAME FIRST_NAME USERID SALARY------ ------------------- -------------------- ------------ -------------

1 Patel Ralph rpatel 10003 Drexler Ben bbiri 11004 Newman Chad cnewman 10005 Ropeburn Audry aropebur 1500

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9.18.Mark an intermediate point in the processing of the transaction.

9.19.Empty the entire table.

9.20.Confirm that the table is empty.9.21.Discard the most recent DELETE operation without discarding the earlierINSERT operation.

9.22. Confirm that the new row is still intact.

ID LAST_NAME FIRST_NAME USERID SALARY--- ------------------ ------------------- --------- ------1 Patel Ralph rpatel 7953 Biri Ben bbiri 1100

4 Newman Chad cnewman 7505 Ropeburn Audry aropebur 1500

9.23.Make the data addition permanent.

TEMA 10. CREANDO Y MANEJANDO TABLAS.TTEEMMAA 1100.. CCR R EEAANNDDOO YY MMAANNEEJJAANNDDOO TTAABBLLAASS.. 10.1.Create the DEPARTMENT table based on the table instance chart givenbelow. Enter the syntax in a script called p10q1.sql , then execute the script tocreate the table. Confirm that the table is created.

Column Name Id Name

Key Type

Nulls/Unique

FK Table

FK Column

Datatype Number Varchar2

Length 7 25

Name Null? Type---------- -------- -----------ID NUMBER(7)

NAME VARCHAR2(25)

10.2.Populate the DEPARTMENT table with data from the DEPT table. Includeonly columns that you need.

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10.3.Create the EMPLOYEE table based on the table instance chart given below.Enter the syntax in a script called p10q3.sql , and then execute the script to createthe table. Confirm that the table is created.

Column Name ID LAST_NAME FIRST_NAME DEPT_ID

Key Type

Nulls/Unique

FK Table

FK Column

Datatype Number Varchar2 Varchar2 Number

Length 7 25 25 7

Name Null? Type------------- -------- ------------ID NUMBER(7)

LAST_NAME VARCHAR2(25)FIRST_NAME VARCHAR2(25)DEPT_ID NUMBER(7)

10.4.Modify the EMPLOYEE table to allow for longer employee last names.Confirm your modification.

Name Null? Type------------------- -------- -----------ID NUMBER(7)LAST_NAME VARCHAR2(50)FIRST_NAME VARCHAR2(25)DEPT_ID NUMBER(7)

10.5.Confirm that both the DEPARTMENT and EMPLOYEE tables are storedin the data dictionary. ( Hint : USER_TABLES)

TABLE_NAME-------------------------DEPARTMENTEMPLOYEE

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10.6.Create the EMPLOYEE2 table based on the structure of the EMP table,include only the EMPNO, ENAME and DEPTNO columns. Name the columnsin your new table ID, LAST_NAME and DEPT_ID, respectively. 10.7.Drop the EMPLOYEE table.

10.8.Rename the EMPLOYEE2 table to EMPLOYEE.

10.9.Add a comment to the DEPARTMENT and EMPLOYEE table definitionsdescribing the tables. Confirm your additions in the data dictionary.

TEMA 11. INCLUYENDO CONSTRAINTS.TTEEMMAA 1111.. IINNCCLLUUYYEENNDDOO CCOONNSSTTR R AAIINNTTSS.. 11.1.Add a table level PRIMARY KEY constraint to the EMPLOYEE tableusing the ID column. The constraint should be enabled at creation. 11.2.Create a PRIMARY KEY constraint on the DEPARTMENT table using theID column. The constraint should be enabled at creation.

11.3.Add a foreign key reference on the EMPLOYEE table that will ensure thatthe employee is not assigned to a nonexistent department.

11.4.Confirm that the constraints were added by queryingUSER_CONSTRAINTS. Note the types and names of the constraints. Saveyour statement text in a file called p11q4.sql .

CONSTRAINT_NAME C

----------------------- --DEPARTMENT_ID_PK PEMPLOYEE_ID_PK PEMPLOYEE_DEPT_ID_FK R

11.5.Display the object names and types from the USER_OBJECTS datadictionary view EMPLOYEE and DEPARTMENT tables. You may want toformat the columns for readability. Notice that the new tables and a new indexwere created.

OBJECT_NAME OBJECT_TYPE------------------------ ---------------------DEPARTMENT TABLEDEPARTMENT_ID_PK INDEXEMPLOYEE TABLEEMPLOYEE_ID_PK INDEX

11.6.Modify the EMPLOYEE table. Add a SALARY column of NUMBER datatype, precision 7.

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TEMA 12. CREANDO VISTAAS.TTEEMMAA 1122.. CCR R EEAANNDDOO VVIISSTTASS.. 12.1.Create a view called EMP_VU based on the employee number, employeename, and department number from the EMP table. Change the heading for theemployee name to EMPLOYEE. 12.2. Display the content’s of the EMP_VU view.

EMPNO EMPLOYEE DEPTNO---------- ----------------- -------------7839 KING 107698 BLAKE 307782 CLARK 107566 JONES 207654 MARTIN 307499 ALLEN 30

7844 TURNER 307900 JAMES 307521 WARD 307902 FORD 207369 SMITH 207788 SCOTT 207876 ADAMS 207934 MILLER 10

14 rows selected.

12.3.Select the view_name and text from the data dictionary USER_VIEWS.

VIEW_NAME TEXT----------- ----------------------------------------EMP_VU SELECT empno, ename employee, deptno

FROM emp

12.4.Using your view EMP_VU, enter a query to display all employee names anddepartment numbers.

EMPLOYEE DEPTNO----------------- --------------KING 10BLAKE 30CLARK 10JONES 20MARTIN 3014 rows selected.

12.5.Create a view named DEPT20 that contains the employee number,

employee name, and department number for all employees in department 20.Label the view column EMPLOYEE_ID, EMPLOYEE, andDEPARTMENT_ID. Do not allow an employee to be reassigned to another

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department through the view.

12.6.Display the structure and contents of the DEPT20 view.

Name Null? Type--------------------- -------- ----------EMPLOYEE_ID NOT NULL NUMBER(4)EMPLOYEE VARCHAR2(10)DEPARTMENT_ID NOT NULL NUMBER(2)

EMPLOYEE_ID EMPLOYEE DEPARTMENT_ID------------------- ----------------- --------------------------

7566 JONES 207902 FORD 207369 SMITH 20

7788 SCOTT 207876 ADAMS 20

12.7.Attempt to reassign Smith to department 30.

12.8.Create a view called SALARY_VU based on the employee name,department name, salary and salary grade for all employees. Label the columnsEmployee, Department, Salary and Grade, respectively.

TEMA 13. OTROS OBJETOS DE BASE DE DATOS.TTEEMMAA 1133.. OOTTR R OOSS OOBBJJEETTOOSS DDEE BBAASSEE DDEE DDAATTOOSS..

13.1.Create a sequence to be used with the DEPARTMENT table’s primary keycolumn. The sequence should start at 60 and have a maximum value of 200. Haveyour sequence increment by ten numbers. Name the sequence DEPT_ID_SEQ.

13.2.Write a script to display the following information about your sequences:sequence name, maximum value, increment size, and last number. Name thescript p13q2.sql . Execute your script.

SEQUENCE_NAME MAX_VALUE INCREMENT_BY AST_NUMBER --------------------------- ------------------- ----------------------- --------------------CUSTID 1.000E+27 1 109DEPT_ID_SEQ 200 1 60ORDID 1.000E+27 1 622PRODID 1.000E+27 1 200381

13.3.Write an interactive script to insert a row into the DEPARTMENT table.Name your script p13q3.sql . Be sure to use the sequence that you created for theID column. Create a customized prompt to enter the department name. Executeyour script. Add two departments named Education and Administration.Confirm your additions.

13.4.Create a non-unique index on the FOREIGN KEY column in theEMPLOYEE table.

13.5.Display the indexes and uniqueness that exist in the data dictionary for the

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EMPLOYEE table. Save the statement into a script named p13q5.sql .

INDEX_NAME TABLE_NAME UNIQUENES------------------------------------- -------------------- ------------------

EMPLOYEE_DEPT_ID_IDX EMPLOYEE NONUNIQUEEMPLOYEE_ID_PK EMPLOYEE UNIQUE

TEMA 15. REPASO. TTEEMMAA 1155.. R R EEPPAASSOO.. 15.1.Create the tables based on the table instance charts below. Choose theappropriate datatypes and be sure to add integrity constraints.

a. Table name: MEMBER Column_ Name

MEMBER_ID

LAST_ NAME

FIRST_ NAME

ADDRESS CITY PHONE JOIN_ DATE

KeyType

PK

Null/Unique

NN,U NN NN

DefaultValue

SystemDate

DataType

Number Varchar2 Varchar2 Varchar2 Varchar2 Varchar2 Date

Length 10 25 25 100 30 15

b. Table name TITLE

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Column_ Name

TITLE_ID TITLE DESCRIPTION RATING CATEGORY RELEASE_ DATE

Key

Type

PK

Null/Unique

NN,U NN NN

Check G, PG, R, NC17, NR

DRAMA,COMEDY,ACTION,CHILD,SCIFI,DOCUMENTAR Y

DataType

Number Varchar2 Varchar2 Varchar2 Varchar2 Date

Length 10 60 400 4 20

c. Table:TITLE-COPY

Column Name COPY_ID TITLE_ID STATUS

KeyType

PK PK,FK

Null/Unique

NN,U NN,U NN

Check AVAILABLE,DESTROYED,RENTED,RESERVED

Data Type Number Number Varchar2

Length 10 10 15

d. Table name: RENTAL

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ColumnName

BOOK_ DATE

MEMBER_ ID

COPY_ ID

ACT_RET_ DATE

EXP_RET_ DATE

TITLE_ ID

Key

Type

PK PK,FK PK,FK PK,FK

DefaultValue

SystemDate

2 days

FK Ref Table

member copy_id title_copy

FK Ref Col

member_id title_id

DataType

Date Number Number Date Date Number

Length 10 10 10

e. Table name: RESERVATION

Column_ Name

RES_ DATE

MEMBER_ ID

TITLE_ ID

KeyType

PK PK,FK PK,FK

Null/Unique

NN,U NN,U NN

FK Ref TableMEMBER TITLE

FK Ref Column

member_id title_id

Data Type Date Number Number

Length 10 10

15.2. Verify that the tables and constraints were created properly by checkingthe data dictionary.

TABLE_NAME-----------MEMBER RENTALRESERVATIONTITLETITLE_COPY

CONSTRAINT_NAME C TABLE_NAME----------------------------------------------------- --- --------------MEMBER_LAST_NAME_NN C MEMBER MEMBER_JOIN_DATE_NN C MEMBER MEMBER_MEMBER_ID_PK P MEMBER RENTAL_BOOK_DATE_COPY_TITLE_PK P RENTAL

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RENTAL_MEMBER_ID_FK R RENTALRENTAL_COPY_ID_TITLE_ID_FK R RENTALRESERVATION_RESDATE_MEM_TIT_PK P RESERVATIONRESERVATION_MEMBER_ID R RESERVATION

RESERVATION_TITLE_ID R RESERVATION...18 rows selected.

15.3.Create sequences to uniquely identify each row in the MEMBER table andthe TITLE table. a. Member number for the MEMBER table: start with 101; do not allowcaching of the values. Name the sequence member_id_seq.

b. Title number for the TITLE table: start with 92; no caching. Name thesequence title_id_seq.

c Verify the existence of the sequences in the data dictionary.

SEQUENCE_NAME INCREMENT_BY LAST_NUMBER ------------------------- ----------------------- ----------------------TITLE_ID_SEQ 1 92MEMBER_ID_SEQ 1 101

15.4.Add data to the tables. Create a script for each set of data to add.

a. Add movie titles to the TITLE table. Write a script to enter the movie

information. Save the script as p15q4a.sql. Use the sequences to uniquely identifyeach title. Remember that single quotation marks in a character field must bespecially handled. Verify your additions.

TITLE------------------------Willie and Christmas TooAlien AgainThe GlobMy Day Off Miracles on IceSoda Gang6 rows selected.

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Title Description Rating Category Release_date

Willie andChristmasToo

All of Willie’s friends madea Christmas list for Santa, butWillie has yet to add his own

wish list.

G CHILD 05-OCT-95

Alien Again Yet another installation of science fiction history. Canthe heroine save the planetfrom the alien life form?

R SCIFI 19-MAY-95

The Glob A meteor crashes near asmall American town andunleashed carnivorous goo inthis classic.

NR SCIFI 12-AUG-95

My Day Off With a little luck and a lot of ingenuity, a teenager skips

school for a day in New York

PG COMEDY 12-JUL-95

Miracles onIce

A six-year-old has doubtsabout Santa Claus but shediscovers that miracles reallydo exist.

PG DRAMA 12-SEP-95

Soda Gang After discovering a cache of drugs, a young couple findthemselves pitted against avicious gang.

NR ACTION 01-JUN-95

b. Add data to the MEMBER table. Write a script named p15q4b.sql to promptusers for the information. Execute the script. Be sure to use the sequence to addthe member numbers.

FirstName

Last Name Address State Phone Join Date

Carmen Velasquez 283 King Street Seattle 206-899-6666 08-MAR-90

LaDoris Ngao 5 Modrany Bratislava 586-355-8882 08-MAR-90

Midori Nagayama 68 Via Centrale Sao Paolo 254-852-5764 17-JUN-91

Mark Lewis 6921 King Way Lagos 63-559-7777 07-APR-90

Audry Ropeburn 86 Chu Street Hong Kong 41-559-87 18-JAN-91

Molly Urguhart 3035 Laurier Quebec 418-542-9988 18-JAN-91

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c. Add the following movie copies in the TITLE_COPY table:

Title Copy Number StatusWillie and Christmas Too 1 Available

Alien 1 Available2 RentedThe Glob 1 AvailableMy Day Off 1 Available

2 Available3 Rented

Miracles on Ice 1 AvailableSoda Gang 1 Available

d. Add the following rentals to the RENTAL table: Note: Title number may be different depending on sequence number.

Title Copy_ number

Customer Date_ Rented

Date_return_expected Date_ returned

92 1 101 3 days ago 1 day ago 2 days ago

93 2 101 1 day ago 1 day from now95 3 102 2 days ago Today97 1 106 4 days ago 2 days ago 2 days ago

15.5.Create a view named TITLE_AVAIL to show the movie titles and theavailability of each copy and its expected return date if rented. Query all rowsfrom the view.

TITLE COPY_ID STATUS EXP_RET_D------------------------------ -------------- -------------- ------------------Alien Again 1 AVAILABLEAlien Again 2 RENTED 05-NOV-97Miracles on Ice 1 AVAILABLE

My Day Off 1 AVAILABLEMy Day Off 2 AVAILABLE My Day Off 3 RENTED 06-NOV-97Soda Gang 1 AVAILABLE 04-NOV-97The Glob 1 AVAILABLEWillie and Christmas Too 1 AVAILABLE 05-NOV-979 rows selected.

15.6.Make changes to data in the tables. a. Add a new title. The movie is “Interstellar Wars,” which is rated PG andclassified as a Sci-fi movie. The release date is 07-JUL-77. The description is

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“Futuristic interstellar action movie. Can the rebels save the humans from theevil Empire?” Be sure to add a title copy record for two copies.

b. Enter two reservations. One reservation is for Carmen Velasquez, who wantsto rent “Interstellar Wars.” The other is for Mark Lewis, who wants to rent

“Soda Gang.”c. Customer Carmen Velasquez rents the movie “Interstellar Wars,” copy 1.Remove her reservation for the movie. Record the information about the rental.Allow the default value for the expected return date to be used. Verify that therental was recorded by using the view you created.

TITLE COPY_ID STATUS EXP_RET_D-------------------------------- ------------ -------------------- ----------------Alien Again 1 AVAILABLEAlien Again 2 RENTED 05-NOV-97

Interstellar Wars 1 RENTED 08-NOV-97Interstellar Wars 2 AVAILABLEMiracles on Ice 1 AVAILABLEMy Day Off 1 AVAILABLEMy Day Off 2 AVAILABLEMy Day Off 3 RENTED 06-NOV-97Soda Gang 1 AVAILABLE 04-NOV-97The Glob 1 AVAILABLEWillie and Christmas Too 1 AVAILABLE 05-NOV-979 rows selected.

15.7.Make a modification to one of the tables. a. Add a PRICE column to the TITLE table to record the purchase price of thevideo. The column should have a total length of eight digits and two decimalplaces. Verify your modifications.

Name Null? Type---------------------- ------------------ -----------------------TITLE_ID NOT NULL NUMBER(10)TITLE NOT NULL VARCHAR2(60)

DESCRIPTION NOT NULL VARCHAR2(400)RATING VARCHAR2(4)CATEGORY VARCHAR2(20)RELEASE_DATE DATEPRICE NUMBER(8,2)

b. Create a script named p15q7b.sql to update each video with a price accordingto the following list. Note: Have the title id numbers available for this exercise.

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Title PriceWillie and Christmas Too 25Alien Again 35The Glob 35

My Day Off 35Miracles on Ice 98

Soda Gang 35Interstellar Wars 29

c. Ensure that in the future all titles will contain a price value. Verify theconstraint.

CONSTRAINT_NAME C SEARCH_CONDITIONS-------------------------------- ---- -------------------------------------TITLE_PRICE_NN C PRICE IS NOT NULL

15.8.Create a report titles Customer History Report. This report will containeach customer’s history of renting videos. Be sure to include the customer name,movie rented, dates of the rental, and duration of rentals. Total the number of rentals for all customers for the reporting period. Save the script in a file name

p15q8.sql.

MEMBER TITLE BOOK_DATE DURATION----------------------- ------------------ ------------------------ --------LaDoris Ngao The Glob 04-NOV-97Molly Urguhart Miracles on Ice 02-NOV-97 2Carmen Velasquez Willie and Christmas 03-NOV-97 1

TooWillie and Christmas 03-NOV-97 1TooAlien Again 05-NOV-97

TEMA 16. DECLARACIÓN DE VARIABLES.TTEEMMAA 1166.. DDEECCLLAAR R AACCIIÓÓNN DDEE VVAAR R IIAABBLLEESS.. Declare variables. 16.1.Evaluate each of the following declarations. Determine which of them are

not legal and explain why.

a. DECLARE

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v_id NUMBER(4);

b. DECLAREv_x, v_y, v_z VARCHAR2(10);

c. DECLAREv_birthdate DATE NOT NULL;

d. DECLAREv_in_stock BOOLEAN := 1;

e. DECLARETYPE name_table_type IS TABLE OF VARCHAR2(20)

INDEX BY BINARY_INTEGER;dept_name_table name_table_type;

16.2.In each of the following assignments, determine the data type of theresulting expression.

a. v_days_to_go := v_due_date - SYSDATE;

b. v_sender := USER || ': ' || TO_CHAR(v_dept_no);

c. v_sum := $100,000 + $250,000;

d. v_flag := TRUE; e. v_n1 := v_n2 > (2 * v_n3);

f. v_value := NULL;

16.3.Create an anonymous block to output the phrase “My PL/SQL Block Works” to the screen.

G_MESSAGE-----------------------

My PL/SQL Block Works 16.4.Create a block that declares two variables. Assign the value of thesePL/SQL variables to SQL*Plus host variables and print the results of thePL/SQL variables to the screen. Execute your PL/SQL block. Save your PL/SQLblock to a file named p16q4.sql.

V_CHAR Character (variable length)V_NUM Number

Assign values to these variables as follows: Variable Value

-------- -------------------------------------V_CHAR The literal '42 is the answer'V_NUM The first two characters from V_CHAR

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G_CHAR ---------------------42 is the answer

G_NÚMERO---------42

TEMA 17. ESCRIBIENDO MANDATOS EJECUTABLES.TTEEMMAA 1177.. EESSCCR R IIBBIIEENNDDOO MMAANNDDAATTOOSS EEJJEECCUUTTAABBLLEESS..

PL/SQL Block

DECLAREv_weight NUMBER(3) := 600;v_message VARCHAR2(255) := 'Product 10012';

BEGINSUB-BLOCK

DECLAREv_weight NUMBER(3) := 1;v_message VARCHAR2(255) := 'Product 11001';v_new_locn VARCHAR2(50) := 'Europe';

BEGINv_weight := v_weight + 1;v_new_locn := 'Western ' || v_new_locn;

END;

v_weight := v_weight + 1;v_message := v_message || ' is in stock';v_new_locn := 'Western ' || v_new_locn;

END;

17.1.Evaluate the PL/SQL block on the previous page and determine each of thefollowing values according to the rules of scoping.

a. The value of V_WEIGHT in the subblock is

____________________________________________________________________

b. The value of V_NEW_LOCN in the subblock is

____________________________________________________________________

c. The value of V_WEIGHT in the main block is

____________________________________________________________________

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d. The value of V_MESSAGE in the main block is

____________________________________________________________________

e. The value of V_NEW_LOCN in the main block is

____________________________________________________________________

Scope Example

DECLAREv_customer VARCHAR2(50) := 'Womansport';v_credit_rating VARCHAR2(50) := 'EXCELLENT';

BEGINDECLAREv_customer NUMBER(7) := 201;v_name VARCHAR2(25) := 'Unisports';

BEGINv_customer v_name v_credit_rating

END;

v_customer v_name v_credit_rating

END;

17.2.Suppose you embed a subblock within a block, as shown on the previouspage. You declare two variables, V_CUSTOMER and V_CREDIT_RATING, inthe main block. You also declare two variables, V_CUSTOMER and V_NAME,

in the subblock. Determine the values for each of the following cases.a. The value of V_CUSTOMER in the subblock is

____________________________________________________________________

b. The value of V_NAME in the subblock is

____________________________________________________________________

c. The value of V_CREDIT_RATING in the subblock is

____________________________________________________________________

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d. The value of V_CUSTOMER in the main block is

____________________________________________________________________

e. The value of V_NAME in the main block is ____________________________________________________________________

f. The value of V_CREDIT_RATING in the main block is ____________________________________________________________________

17.3.Create and execute a PL/SQL block that accepts two numbers throughSQL*Plus substitution variables. The first number should be divided by thesecond number and have the second number added to the result. The resultshould be written to a PL/SQL variable and printed to the screen.

Please enter the first number: 2Please enter the second number: 4 PL/SQL procedure successfully completed. V_RESULT---------------

4.5

17.4.Build a PL/SQL block that computes the total compensation for one year.The annual salary and the annual bonus percentage are passed to the PL/SQLblock through SQL*Plus substitution variables and the bonus needs to beconverted from a whole number to a decimal (for example, 15 to .15). If thesalary is null, set it to zero before computing the total compensation. Execute thePL/SQL block. Reminder: Use the NVL function to handle null values.

Note: To test the NVL function type NULL at the prompt; pressing [Return]results in a missing expression error.

Please enter the salary amount: 50000Please enter the bonus percentage: 10PL/SQL procedure successfully completed.G_TOTAL--------------55000

TEMA 18.INTERACTUANDO CON ORACLE SERVER.TTEEMMAA 1188..IINNTTEER R AACCTTUUAANNDDOO CCOONN OOR R AACCLLEE SSEER R VVEER R .. 18.1.Create a PL/SQL block that selects the maximum department number inthe DEPT table and store it in a SQL*Plus variable. Print the results to the

screen. Save your PL/SQL block to a file named p18q1.sql.

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G_MAX_DEPTNO-------------------------

40

18.2.Create a PL/SQL block that inserts a new department into the DEPT table.Save your PL/SQL block to a file named p18q2.sql.

a. Use the department number retrieved from exercise 1 and add 10 to thatnumber as the input department number for the new department.

b. Use a parameter for the department name.

c. Leave the location null for now.

d. Execute the PL/SQL block.

Please enter the department number: 50

Please enter the department name: EDUCATIONPL/SQL procedure successfully completed.

e. Display the new department that you created.

DEPTNO DNAME LOC----------------- ---------------------- ---------

50 EDUCATION

18.3.Create a PL/SQL block that updates the location for an existingdepartment. Save your PL/SQL block to a file named p18q3.sql.

a. Use a parameter for the department number.

b. Use a parameter for the department location.

c. Test the PL/SQL block.Please enter the department number: 50Please enter the department location: HOUSTON

PL/SQL procedure successfully completed.

d. Display the department number, department name, and location for theupdated department.

DEPTNO DNAME LOC

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

50 EDUCATION HOUSTON

e. Display the department that you updated.

18.4.Create a PL/SQL block that deletes the department created in exercise 2.

Save your PL/SQL block to a file named p18q4.sql.a. Use a parameter for the department number.

b. Print to the screen the number of rows affected.

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c. Test the PL/SQL block.

Please enter the department number: 50PL/SQL procedure successfully completed.

G_RESULT-----------------------------------------------------------1 row(s) deleted.

d. What happens if you enter a department number that does not exist?

Please enter the department number: 99PL/SQL procedure successfully completed.

G_RESULT-----------------------------------------------------------0 row(s) deleted.

e.Confirm that the department has been deleted.

no rows selected

TEMA 19.ESTRUCTURAS DE CONTROL.TTEEMMAA 1199..EESSTTR R UUCCTTUUR R AASS DDEE CCOONNTTR R OOLL.. 19.1.Run the script/home/db/InformaciónGeneral/practicasdb2000/tema19/lab19_1.sql to create theMESSAGES table. Write a PL/SQL block to insert numbers into theMESSAGES table. a . Insert the numbers 1 to 10 excluding 6 and 8.

b. Commit before the end of the block.

c. Select from the MESSAGES table to verify that your PL/SQL block worked. RESULTS

-----------------1234579

10

19.2.Create a PL/SQL block that computes the commission amount for a givenemployee based on the employee’s salary.

a. Run the script

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/home/db/InformaciónGeneral/practicasdb2000/tema19/lab19_2.sql to insert anew employee into the EMP table.Note: The employee will have a NULL salary.

b. Accept the employee number as user input with a SQL*Plus substitution

variable.c. If the employee’s salary is less than $1,000, set the commission amount for theemployee to 10% of the salary.

d. If the employee’s salary is between $1,000 and $1,500, set the commissionamount for the employee to 15% of the salary.

e. If the employee’s salary exceeds $1,500, set the commission amount for theemployee to 20% of the salary.

f. If the employee’s salary is NULL, set the commission amount for the employeeto 0.

g. Commit.h. Test the PL/SQL block for each case using the following test cases, and check each updated commission.

Employee Number Salary Resulting Commission

7369 800 80

7934 1300 195

7499 1600 320

8000 NULL NULL

EMPNO ENAME SAL COMM----------- ----------- -------- ---------8000 DOE 07499 ALLEN 1600 3207934 MILLER 1300 1957369 SMITH 800 80

19.3.Modify p16q4.sql to insert the text “Number is odd” or “Number is even,”depending on whether the value is odd or even, into the MESSAGES table.Query the MESSAGES table to determine if your PL/SQL block worked.

RESULTS---------------

Number is even

19.44..AAdddd aa nneeww ccoolluummnn ttoo tthhee EEMMPP ttaabbllee f f oorr ssttoorriinngg aasstteerriissk k ((**)).. 19.55..CCrreeaattee aa PPLL//SSQQLL bblloocck k tthhaatt rreewwaarrddss aann eemmppllooyyeeee bbyy aappppeennddiinngg aann aasstteerriissk k iinn tthhee SSTTAAR R SS ccoolluummnn f f oorr eevveerryy $$110000 oof f tthhee eemmppllooyyeeee''ss ssaallaarryy.. R R oouunndd tthhee eemmppllooyyeeee’’ss ssaallaarryy ttoo tthhee nneeaarreesstt wwhhoollee nnuummbbeerr.. SSaavvee yyoouurr PPLL//SSQQLL bblloocck k ttoo aa f f iillee ccaalllleedd p p1199qq55 . .ssqql l . .

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a. Accept the employee ID as user input with a SQL*Plus substitution variable.

b. Initialize a variable to contain a string of asterisks.

c. Append an asterisk to the string for every $100 of the salary amount. Forexample, if the employee has a salary amount of $800, the string of asterisksshould contain eight asterisks.

d. Update the STARS column for the employee with the string of asterisks.

e. Commit.

f. Test the block for employees who have no salary and for an employee whohas a salary.

Please enter the employee number: 7934PL/SQL procedure successfully completed.Please enter the employee number: 8000

PL/SQL procedure successfully completed. EMPNO SAL STARS------------ --------- ----------------80007934 1300 *************

TEMA 20.TRABAJANDO CON TIPOS COMPUESTOS.TTEEMMAA 2200..TTR R AABBAAJJAANNDDOO CCOONN TTIIPPOOSS CCOOMMPPUUEESSTTOOSS.. 20.1.Run the script/home/db/InformaciónGeneral/practicasdb2000/tema20/lab20_1.sql to create anew table for storing employees and their salaries.

SQL> CREATE TABLE top_dogs2 (name VARCHAR2(25),3 salary NUMBER(11,2));

20.2.Write a PL/SQL block to retrieve the name and salary of a given employeefrom the EMP table based on the employee’s number, incorporate PL/SQLtables.

a. Declare two PL/SQL tables, ENAME_TABLE and SAL_TABLE, totemporarily store the names and salaries.

b. As each name and salary is retrieved within the loop, store them in thePL/SQL tables.

c. Outside the loop, transfer the names and salaries from the PL/SQL tables intothe TOP_DOGS table.

d. Empty the TOP_DOGS table and test the practice.

Please enter the employee number: 7934PL/SQL procedure successfully completed.

NAME SALARY--------------- ---------MILLER 1300

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Please enter the employee number: 7876PL/SQL procedure successfully completed.

NAME SALARY--------------- ---------ADAMS 1100

TEMA 21.CUR R SORES.TTEEMMAA 2211..CCUURSSOOR R EESS.. 21.1.Create a PL/SQL block that determines the top employees with respect tosalaries. a. Accept a number n as user input with a SQL*Plus substitution parameter.

b. In a loop, get the last names and salaries of the top n people with respect to

salary in the EMP table.c. Store the names and salaries in the TOP_DOGS table.

d. Assume that no two employees have the same salary.

e. Test a variety of special cases, such a n = 0, where n is greater than thenumber of employees in the EMP table. Empty the TOP_DOGS table aftereach test.

Please enter the number of top money makers: 5

NAME SALARY----------- ------KING 5000FORD 3000SCOTT 3000JONES 2975BLAKE 2850

21.2.Consider the case where several employees have the same salary. If oneperson is listed, then all people who have the same salary should also be listed. a. For example, if the user enters a value of 2 for n, then King, Ford and Scott

should be displayed. (These employees are tied for second highest salary.)b. If the user enters a value of 3, then King, Ford, Scott, and Jones should bedisplayed.

c. Delete all rows from TOP_DOGS and test the practice.Please enter the number of top money makers: 2

NAME SALARY------------ -------------KING 5000FORD 3000SCOTT 3000 Please enter the number of top money makers: 3

NAME SALARY------------ ------

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KING 5000FORD 3000SCOTT 3000JONES 2975

TEMA 22.CUR R SORES EXPLÍCITOS AVANZADOS.TTEEMMAA 2222..CCUURSSOOR R EESS EEXXPPLLÍÍCCIITTOOSS AAVVAANNZZAADDOOSS..

22.1.Write a query to retrieve all the departments and the employees in eachdepartment. Insert the results in the MESSAGES table. Use a cursor to retrievethe department number and pass the department number to a cursor to retrievethe employees in that department.

RESULTS------------------------KING - Department 10CLARK - Department 10MILLER - Department 10JONES - Department 20FORD - Department 20SMITH - Department 20SCOTT - Department 20ADAMS - Department 20BLAKE - Department 30MARTIN - Department 30

ALLEN - Department 30TURNER - Department 30JAMES - Department 30WARD - Department 3014 rows selected.

22.2.Modify p19q5.sql to incorporate the FOR UPDATE and WHERECURRENT OF functionality in cursor processing.

EMPNO SAL STARS

--------------- ------ ---------------------80007900 950 **********7844 1500 ***************

TEMA 23.MANEJO DE EXCEPCIONES.TTEEMMAA 2233..MMAANNEEJJOO DDEE EEXXCCEEPPCCIIOONNEESS..

23.1.Write a PL/SQL block to select the name of the employee with a givensalary value.

a. If the salary entered returns more than one row, handle the exception with an

appropriate exception handler and insert into the MESSAGES table, themessage “More than one employee with a salary of <salary>.”

b. If the salary entered does not return any rows, handle the exception with an

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appropriate exception handler and insert into the MESSAGES table, themessage “No employee with a salary of <salary>.”

c. If the salary entered returns only one row, insert into the MESSAGES tablethe employee’s name and the salary amount.

d. Handle any other exception with an appropriate exception handler and insertinto the MESSAGES table, the message “Some other error occurred.”

e. Test the block for a variety of test cases. RESULTS--------------------------------------------SMITH - 800More than one employee with a salary of 3000

No employee with a salary of 6000

23.2.Modify p18q3.sql to add an exception handler.

a. Write an exception handler for the error to pass a message to the user that thespecified department does not exist.

b. Execute the PL/SQL block by entering a department that does not exist.

Please enter the department number: 50Please enter the department location: HOUSTONPL/SQL procedure successfully completed. G_MESSAGE--------------------------------------Department 50 is an invalid department

23.3.Write a PL/SQL block that prints the names of the employees who makeplus or minus $100 of the salary value entered.

a. If there is no employee within that salary range, print a message to the userindicating that is the case. Use an exception for this case.

b. If there are one or more employees within that range, the message shouldindicate how many employees are in that salary range.

c. Handle any other exception with an appropriate exception handler, themessage should indicate that some other error occurred.

Please enter the salary: 800

PL/SQL procedure successfully completed. G_MESSAGE----------------------------------------------------------There is 1 employee(s) with a salary between 700 and 900 Please enter the salary: 3000PL/SQL procedure successfully completed. G_MESSAGE----------------------------------------------------------There are 3 employee(s) with a salary between 2900 and 3100 Please enter the salary: 6000PL/SQL procedure successfully completed.

G_MESSAGE-------------------------------------------------

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There are no employee salary between 5900 and 6100

TEMA 24.OPERADORESS DE CONJUNTOS.TTEEMMAA 2244..OOPPEER R AADDOOR R EES DDEE CCOONNJJUUNNTTOOSS..

24.1.Display the department that has no employees.

DEPTNO DNAME

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

40 OPERATIONS

24.2.Find the job that was filled in the last half of 1981 and the same job that wasfilled during the same period in 1982.

JOB---------

ANALYST

24.3.Write a compound query to produce a list of products showing discountpercentages, product id, and old and new actual price. Products under $10 arereduced by 10%, products between $10 and $30 are reduced by 15%, productsover $30 are reduced by 20%, and products over $40 are not reduced at all.

DISCOUNT PRODID STDPRICE ACTPRICE----------------- --------- ---------------- -----------------10% off 100870 2.4 2.16

10% off 100870 2.8 2.5210% off 100871 4.8 4.3210% off 100871 5.6 5.0410% off 102130 3.4 3.0610% off 200376 2.4 2.1610% off 200380 4 3.615% off 100860 30 25.515% off 101860 24 20.415% off 101863 12.5 10.62520% off 100860 32 25.620% off 100860 35 28

20% off 100861 39 31.2no disc 100861 42 42no disc 100861 45 45no disc 100890 54 54no disc 100890 58 58

24.4.Produce a list of jobs for departments 10, 30, and 20 in that order. Display job and department number.

JOB DEPTNO

--------- --------CLERK 10

MANAGER 10

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PRESIDENT 10

CLERK 30

MANAGER 30

SALESMAN 30

ANALYST 20CLERK 20

MANAGER 20

24.5. List the department number for departments without the job titleANALYST .

DEPTNO------------

10

3040

24.6.List all job titles in department 10 and 20 that do not occur in bothdepartments.

JOB------------------ANALYSTPRESIDENT

TEMA 25. SUBCONSULTAAS COR ELACIONADAS.TTEEMMAA 2255.. SSUUBBCCOONNSSUULLTTASS CCOOR R R R R EELLAACCIIOONNAADDAASS.. 25.1.Write a query to display the top three earners in the EMP table. Displaytheir names and salaries.

ENAME SAL---------- ---------KING 5000FORD 3000SCOTT 3000

25.2.Find all employees who are not a supervisor.

a. Do this using the EXISTS operator first.

ENAME----------MARTINALLENTURNER JAMES

WARDSMITHADAMS

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MILLER

b. Can this be done using the IN operator? Why, or why not?

25.3. Write a query to find all employees who make more than the average salaryin their department. Display employee number, salary, department number,and the average salary for the department. Sort by average salary.

ENAME SALARY DEPTNO DEPT_AVG------------- ------------- -------------- -----------------ALLEN 1600 30 1566.6667BLAKE 2850 30 1566.6667JONES 2975 20 2175FORD 3000 20 2175SCOTT 3000 20 2175KING 5000 10 2916.6667

25.4.Write a query to display employees who earn less than half the averagesalary in their department.

ENAME----------SMITHMILLER

25.5. Write a query to display employees who have one or more co-workers intheir department with later hiredates but higher salaries.

ENAME----------CLARK JONESALLENWARD

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