MySQL Questions and Answers – The from Clauses – 2

This set of MySQL Multiple Choice Questions & Answers (MCQs) focuses on “The from Clauses – 2”.

1. What is the use of “VIEW” in Mysql?
a) To hide columns from the users
b) To hide the complexity of the database
c) To simplify complexity of database design
d) All of the mentioned
View Answer

2. Is there any error in the following MySQL statement?

SELECT e.emp_id, e.fname,e.lname,d.name
FROM employee e INNER JOIN department d
ON e.dept_id=e.dept_id;

a) NO
b) YES
c) DEPEND
d) None of the mentioned
View Answer

3. Is there any error in the following MySQL statement?

SELECT e.emp_id, e.fname,e.lname,d.name
FROM employee AS e INNER JOIN department AS d
ON e.dept_id=e.dept_id;

a) NO
b) YES
c) DEPEND
d) None of the mentioned
View Answer

4. What will be the output of the following MySQL statement “true AND Null”?
a) True
b) Null
c) Depend
d) None of the mentioned
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5. What will be the output of the following MySQL statement “false AND Null”?
a) False
b) Null
c) Depend
d) None of the mentioned
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6. What will be the output of the following MySQL statement “Null AND Null”?
a) True
b) Null
c) False
d) None of the mentioned
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7. What will be the output of the following MySQL statement “true OR Null”?
a) True
b) Null
c) False
d) None of the mentioned
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8. What will be the output of the following MySQL statement “false OR Null”?
a) True
b) Null
c) False
d) None of the mentioned
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9. What will be the output of the following MySQL statement “Null OR Null”?
a) True
b) Null
c) False
d) None of the mentioned
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10. What will be the output of the following MySQL statement “NOT (Null)”?
a) True
b) Null
c) False
d) None of the mentioned
View Answer

Sanfoundry Global Education & Learning Series – MySQL Database.

To practice all areas of MySQL Database, here is complete set of 1000+ Multiple Choice Questions and Answers.

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