1. SQL Exercises – Part I
April-26-17

2. Some Simple SQL Commands
CREATE TABLE test
( i int,    s char(10)      );
DESCRIBE test;

3. Inserting tuples into table
INSERT INTO test VALUES(10, 'foobar1');
INSERT INTO test VALUES(11, 'foobar2');
INSERT INTO test VALUES(12, 'foobar3');

4. Querying the table SELECT * FROM test; SELECT * FROM test where i=10;
SELECT * FROM test where s=‘foo’;
SELECT * FROM test
where s like ‘fo%’;

5. Deleting tuples from table
Delete from test where i=10;
Delete from test;
DROP TABLE test;

6. Exercise #1 MovieExec (name, address, cert#, netWorth)
Studio (name, address, precsC#)
Describe the tuples that would appear in the following expression:
Studio CROSS JOIN MovieExec

7. Solution #1 - 1 Q: Studio CROSS JOIN MovieExec
A: The result will be a 7-column relation with all the attributes of Studio and MovieExec. Every pair consisting of one tuple of Studio and one tuple of MovieExec will be a tuple of the resulting relation

8. Solution #1 - 2 Instance Studio: Instance MovieExec:
200
100
netWorth 1 H G 2 F E
cert#
address
name
name
address
presC# A B 1 C D 2
200
100
netWorth 1 2
cert# H G D C F
MovieExec.addree E
MovieExec.name B A
presC#
Studio.address
Studio.name
Studio x MovieExec:

9. Exercise #2 - 1 Movie(title, year,length, inColor)
StarsIn(movieTitle, movieYear, starName)
MovieStar(name, address, gender, birthdate, income)
Q-1: Find Harrison Ford’s birth date.

10. Solution #2 - 1 Q-1: Find Harrison Ford’s birth date. Select birthdate
From MovieStar
Where name=‘Harrison Ford’

11. Exercise #2 - 2 Movie(title, year,length, inColor)
StarsIn(movieTitle, movieYear, starName)
MovieStar(name, address, gender, birthdate, income)
Q-2: Find all the movie stars who earn at least $10,000,000

12. Solution #2 - 2
Q-2: Find all the movie stars who earn at least $10,000,000
Select name
From MovieStar
Where income>= 10,000,000

13. Exercise #2 - 3 Movie(title, year,length, inColor)
StarsIn(movieTitle, movieYear, starName)
MovieStar(name, address, gender, birthdate, income)
Q-3: Find all the stars who either are male or live in Montreal (have string Montreal as part of their address)

14. Solution #2 - 3
Q-3: Find all the stars who either are male or live in Montreal (i.e. have string Montreal as part of their address)
Select name
From MovieStar
Where gender=‘M’ or
address like ‘%Montreal%’

15. Exercise #2 - 4 Movie(title, year,length, inColor)
StarsIn(movieTitle, movieYear, starName)
MovieStar(name, address, gender, birthdate, income)
Q-4: Find all the color movies (i.e. inColor=‘color’) that were made in 1980 and have length more than 80 minutes.

16. Solution #2 - 4
Q-4: Find all the color movies (i.e. inColor=“color”) that were made in 1980 and have length more than 80 minutes.
Select title
From Movie
Where inColor=‘color’ and
year=1980 and
length>80

17. Exercise #2 - 5 Movie(title, year,length, inColor)
StarsIn(movieTitle, movieYear, starName)
MovieStar(name, address, gender, birthdate, income)
Q-5: Find all the color movies that Harrison Ford has played.

18. Solution #2 - 5
Q-5: Find all the color movies that Harrison Ford has played
Select title
From Movie, StarsIn
Where title=movieTitle and
year=movieYear and
starName =‘Harrison Ford’ and
inColor =‘color’

19. Exercise #3
Create an Employee table that can be used to store information related to employee’s first name, last name, SIN, employee number, birthdate, address, gender, and salary.

20. Solution #3 CREATE TABLE EMPLOYEE (FirstName VARCHAR(15) NOT NULL,
LastName VARCHAR(15) NOT NULL,
SIN CHAR(9) NOT NULL,
EmployeeNum CHAR(12) NOT NULL,
BirthDate DATE,
Address VARCHAR(30),
Gender CHAR,
Salary DECIMAL(10,2),
PRIMARY KEY (SIN),
UNIQUE (EmployeeNum ));