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Welcome to the Query Optimization MCQs Page

Dive deep into the fascinating world of Query Optimization with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Query Optimization, a crucial aspect of MySQL Database. In this section, you will encounter a diverse range of MCQs that cover various aspects of Query Optimization, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MySQL Database.

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Check out the MCQs below to embark on an enriching journey through Query Optimization. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MySQL Database.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Query Optimization. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Query Optimization MCQs | Page 9 of 9

Explore more Topics under MySQL Database

Q81.
Which clause is used to “Identifies table from which to draw table and how the table should be joined”?

a.

FROM

b.

SELECT

c.

ORDER By

d.

WHERE

Discuss
Answer: (a).FROM
Q82.
Which clause is used to “Filters out unwanted data”?

a.

FROM

b.

WHERE

c.

SELECT

d.

ORDER BY

Discuss
Answer: (b).WHERE
Q83.
Which clause is used to “group rows together by common columns values”?

a.

SELECT

b.

GROUP BY

c.

FROM

d.

WHERE

Discuss
Answer: (b).GROUP BY
Q84.
Which clause is used to “filter out unwanted Groups”?

a.

HAVING

b.

FROM

c.

WHERE

d.

SELECT

Discuss
Answer: (a).HAVING
Q85.
Which clause is used to “sort the rows of the final result set by one or more columns”?

a.

HAVING

b.

ORDER BY

c.

WHERE

d.

FROM

Discuss
Answer: (b).ORDER BY
Q86.
Which clause is used to “Modify the existing field of the table”?

a.

ALTER

b.

FROM

c.

SELECT

d.

MODIFY

Discuss
Answer: (a).ALTER
Q87.
Which among the following is not a “query clause”?

a.

WHERE

b.

MODIFY

c.

ALTER

d.

FROM

Discuss
Answer: (a).WHERE
Q88.
“MODIFY” is used with which “Query clause”?

a.

ALTER

b.

FROM

c.

WHERE

d.

ORDER BY

Discuss
Answer: (a).ALTER
Page 9 of 9

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