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MySQL MCQs and Answers With Explanation – MySQL is a popular relational database management system used by developers around the world. It is an open-source database that is widely used for web applications and other projects. MySQL is known for its scalability, reliability, and ease of use. In this set of MySQL Multiple Choice Questions and Answers, we have included the Top 50 MySQL MCQs covering a wide range of topics, including data types, SQL commands, table manipulation, and more.
MySQL MCQs
This MySQL MCQ Quiz is designed to test your knowledge of MySQL and help you improve your understanding of the database. Whether you’re a beginner or an experienced developer, these MySQL Multiple Choice Questions will help you test your skills and prepare for your next MySQL-related project.
MySQL Multiple Choice Questions
| Name | MySQL |
| Exam Type | MCQ (Multiple Choice Questions) |
| Category | Technical Quiz |
| Mode of Quiz | Online |
Top 50 MySQL MCQs | Practice Online Quiz
1. Which of the following statements is used to create a new database in MySQL?
a. CREATE TABLE
b. CREATE SCHEMA
c. CREATE DATABASE
d. CREATE INSTANCE
Answer: c.
Explanation: The CREATE DATABASE statement is used to create a new database in MySQL.
2. Which of the following data types can store text values in MySQL?
a. INT
b. FLOAT
c. CHAR
d. VARCHAR
Answer: d.
Explanation: VARCHAR is a data type used for storing variable-length character strings in MySQL.
3. Which of the following statements is used to insert data into a MySQL table?
a. SELECT
b. UPDATE
c. INSERT INTO
d. DELETE
Answer: c.
Explanation: The INSERT INTO statement is used to insert data into a MySQL table.
4. Which of the following statements is used to update data in a MySQL table?
a. SELECT
b. UPDATE
c. INSERT INTO
d. DELETE
Answer: b.
Explanation: The UPDATE statement is used to update data in a MySQL table.
5. Which of the following statements is used to delete data from a MySQL table?
a. SELECT
b. UPDATE
c. INSERT INTO
d. DELETE
Answer: d.
Explanation: The DELETE statement is used to delete data from a MySQL table.
6. Which of the following clauses is used to sort the result set in ascending or descending order in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: b.
Explanation: The ORDER BY clause is used to sort the result set in ascending or descending order in MySQL.
7. Which of the following statements is used to create a new table in MySQL?
a. CREATE DATABASE
b. CREATE TABLE
c. CREATE SCHEMA
d. CREATE INSTANCE
Answer: b.
Explanation: The CREATE TABLE statement is used to create a new table in MySQL.
8. Which of the following clauses is used to filter data based on a condition in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: d.
Explanation: The WHERE clause is used to filter data based on a condition in MySQL.
9. Which of the following statements is used to grant privileges to a user in MySQL?
a. GRANT
b. REVOKE
c. DENY
d. ALLOW
Answer: a.
Explanation: The GRANT statement is used to grant privileges to a user in MySQL.
10. Which of the following statements is used to revoke privileges from a user in MySQL?
a. GRANT
b. REVOKE
c. DENY
d. ALLOW
Answer: b.
Explanation: The REVOKE statement is used to revoke privileges from a user in MySQL.
11. Which of the following clauses is used to group the result set by one or more columns in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: a.
Explanation: The GROUP BY clause is used to group the result set by one or more columns in MySQL.
12. Which of the following statements is used to create a new user in MySQL?
a. CREATE USER
b. CREATE ACCOUNT
c. CREATE LOGIN
d. CREATE PROFILE
Answer: a.
Explanation: The CREATE USER statement is used to create a new user in MySQL.
13. Which of the following clauses is used to specify the columns to be selected in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. SELECT
Answer: d.
Explanation: The SELECT clause is used to specify the columns to be selected in MySQL.
14. Which of the following clauses is used to limit the number of rows returned in MySQL?
a. LIMIT
b. OFFSET
c. GROUP BY
d. ORDER BY
Answer: a.
Explanation: The LIMIT clause is used to limit the number of rows returned in MySQL.
15. Which of the following statements is used to delete a database in MySQL?
a. DELETE DATABASE
b. REMOVE DATABASE
c. DROP DATABASE
d. ERASE DATABASE
Answer: c.
Explanation: The DROP DATABASE statement is used to delete a database in MySQL.
16. Which of the following clauses is used to join two or more tables in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. JOIN
Answer: d.
Explanation: The JOIN clause is used to join two or more tables in MySQL.
17. Which of the following statements is used to create a new index in MySQL?
a. CREATE INDEX
b. CREATE KEY
c. CREATE CONSTRAINT
d. CREATE TRIGGER
Answer: a.
Explanation: The CREATE INDEX statement is used to create a new index in MySQL.
18. Which of the following clauses is used to filter data based on a condition that is not directly related to the table being queried in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: d.
Explanation: The WHERE clause is used to filter data based on a condition that is directly related to the table being queried. The HAVING clause is used to filter data based on a condition that is not directly related to the table being queried.
19. Which of the following statements is used to grant SELECT privileges to a user in MySQL?
a. GRANT SELECT
b. GRANT ALL
c. GRANT UPDATE
d. GRANT DELETE
Answer: a.
Explanation: The GRANT SELECT statement is used to grant SELECT privileges to a user in MySQL.
20. Which of the following clauses is used to specify the values to be inserted into a MySQL table?
a. GROUP BY
b. ORDER BY
c. HAVING
d. VALUES
Answer: d.
Explanation: The VALUES clause is used to specify the values to be inserted into a MySQL table.
21. Which of the following statements is used to create a new view in MySQL?
a. CREATE TABLE
b. CREATE VIEW
c. CREATE SCHEMA
d. CREATE INSTANCE
Answer: b.
Explanation: The CREATE VIEW statement is used to create a new view in MySQL.
22. Which of the following clauses is used to update data in a MySQL table with data from another table?
a. GROUP BY
b. ORDER BY
c. HAVING
d. UPDATE JOIN
Answer: d.
Explanation: The UPDATE JOIN clause is used to update data in a MySQL table with data from another table.
23. Which of the following statements is used to grant UPDATE privileges to a user in MySQL?
a. GRANT SELECT
b. GRANT ALL
c. GRANT UPDATE
d. GRANT DELETE
Answer: c.
Explanation: The GRANT UPDATE statement is used to grant UPDATE privileges to a user in MySQL.
24. Which of the following clauses is used to group the result set based on the values of a specified column in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: a.
Explanation: The GROUP BY clause is used to group the result set based on the values of a specified column in MySQL.
25. Which of the following statements is used to grant DELETE privileges to a user in MySQL?
a. GRANT SELECT
b. GRANT ALL
c. GRANT UPDATE
d. GRANT DELETE
Answer: d.
Explanation: The GRANT DELETE statement is used to grant DELETE privileges to a user in MySQL.
26. Which of the following clauses is used to order the result set based on the values of a specified column in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: b.
Explanation: The ORDER BY clause is used to order the result set based on the values of a specified column in MySQL.
27. Which of the following statements is used to create a new database in MySQL?
a. CREATE DATABASE
b. CREATE TABLE
c. CREATE SCHEMA
d. CREATE INSTANCE
Answer: a.
Explanation: The CREATE DATABASE statement is used to create a new database in MySQL.
28. Which of the following clauses is used to filter data based on a condition that is directly related to the table being queried in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: d.
Explanation: The WHERE clause is used to filter data based on a condition that is directly related to the table being queried.
29. Which of the following statements is used to grant ALL privileges to a user in MySQL?
a. GRANT SELECT
b. GRANT ALL
c. GRANT UPDATE
d. GRANT DELETE
Answer: b.
Explanation: The GRANT ALL statement is used to grant ALL privileges to a user in MySQL.
30. Which of the following clauses is used to filter data based on a condition that involves an aggregate function in MySQL?
a. GROUP BY (Answer)
b. ORDER BY
c. HAVING
d. WHERE
Answer: a.
Explanation: The HAVING clause is used to filter data based on a condition that involves an aggregate function in MySQL.
31. Which of the following statements is used to revoke privileges from a user in MySQL?
a. REVOKE
b. DENY
c. WITHDRAW
d. REMOVE
Answer: a.
Explanation: The REVOKE statement is used to revoke privileges from a user in MySQL.
32. Which of the following clauses is used to filter the result set based on a condition that is not related to the GROUP BY clause in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: d.
Explanation: The WHERE clause is used to filter the result set based on a condition that is not related to the GROUP BY clause in MySQL.
33. Which of the following statements is used to create a new table in MySQL?
a. CREATE DATABASE
b. CREATE TABLE
c. CREATE VIEW
d. CREATE INDEX
Answer: b.
Explanation: The CREATE TABLE statement is used to create a new table in MySQL.
34. Which of the following clauses is used to specify the columns to be selected in MySQL?
a. SELECT
b. FROM
c. WHERE
d. ORDER BY
Answer: a.
Explanation: The SELECT clause is used to specify the columns to be selected in MySQL.
35. Which of the following statements is used to grant EXECUTE privileges to a user in MySQL?
a. GRANT SELECT
b. GRANT ALL
c. GRANT EXECUTE
d. GRANT DELETE
Answer: c.
Explanation: The GRANT EXECUTE statement is used to grant EXECUTE privileges to a user in MySQL.
36. Which of the following clauses is used to filter data based on a condition that is related to the GROUP BY clause in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING (Answer)
d. WHERE
Answer: c.
Explanation: The HAVING clause is used to filter data based on a condition that is related to the GROUP BY clause in MySQL.
37. Which of the following clauses is used to sort the result set in ascending or descending order based on the values of a specified column in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: b.
Explanation: The ORDER BY clause is used to sort the result set in ascending or descending order based on the values of a specified column in MySQL.
38. Which of the following statements is used to create a new user in MySQL?
a. CREATE USER
b. CREATE DATABASE
c. CREATE TABLE
d. CREATE VIEW
Answer: a.
Explanation: The CREATE USER statement is used to create a new user in MySQL.
39. Which of the following clauses is used to group rows based on the values of one or more columns in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: a.
Explanation: The GROUP BY clause is used to group rows based on the values of one or more columns in MySQL.
40. Which of the following statements is used to revoke ALL privileges from a user in MySQL?
a. REVOKE ALL
b. DENY ALL
c. WITHDRAW ALL
d. REMOVE ALL
Answer: a.
Explanation: The REVOKE ALL statement is used to revoke ALL privileges from a user in MySQL.
41. Which of the following clauses is used to join two or more tables based on a related column between them in MySQL?
a. INNER JOIN
b. LEFT JOIN
c. RIGHT JOIN
d. All of the above
Answer: d.
Explanation: All of the above clauses are used to join two or more tables based on a related column between them in MySQL.
42. Which of the following statements is used to grant UPDATE privileges to a user in MySQL?
a. GRANT SELECT
b. GRANT ALL
c. GRANT UPDATE
d. GRANT DELETE
Answer: c.
Explanation: The GRANT UPDATE statement is used to grant UPDATE privileges to a user in MySQL.
43. Which of the following clauses is used to specify the table or tables to be queried in MySQL?
a. SELECT
b. FROM
c. WHERE
d. GROUP BY
Answer: b.
Explanation: The FROM clause is used to specify the table or tables to be queried in MySQL.
44. Which of the following statements is used to delete a database in MySQL?
a. DELETE DATABASE
b. DROP DATABASE
c. REMOVE DATABASE
d. ERASE DATABASE
Answer: b.
Explanation: The DROP DATABASE statement is used to delete a database in MySQL.
45. Which of the following clauses is used to filter data based on a condition that involves a subquery in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. WHERE
Answer: d.
Explanation: The WHERE clause is used to filter data based on a condition that involves a subquery in MySQL.
46. Which of the following statements is used to delete a table in MySQL?
a. DELETE TABLE
b. DROP TABLE
c. REMOVE TABLE
d. ERASE TABLE
Answer: b.
Explanation: The DROP TABLE statement is used to delete a table in MySQL.
47. Which of the following clauses is used to select unique values from a specified column in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. DISTINCT
Answer: d.
Explanation: The DISTINCT clause is used to select unique values from a specified column in MySQL.
48. Which of the following statements is used to rename a table in MySQL?
a. ALTER TABLE RENAME
b. ALTER TABLE MODIFY
c. ALTER TABLE CHANGE
d. ALTER TABLE ADD COLUMN
Answer: a.
Explanation: The ALTER TABLE RENAME statement is used to rename a table in MySQL.
49. Which of the following clauses is used to limit the number of rows returned by a query in MySQL?
a. GROUP BY
b. ORDER BY
c. HAVING
d. LIMIT
Answer: d.
Explanation: The LIMIT clause is used to limit the number of rows returned by a query in MySQL. It is typically used in conjunction with the SELECT statement to return a specific subset of rows from a table. For example, the following query would return the first 10 rows from the “customers” table:
| SELECT * FROM customers LIMIT 10; |
This can be useful when working with large tables or when you only need to retrieve a small amount of data from a larger dataset.
50. Which of the following statements is used to add a new column to an existing table in MySQL?
a. ALTER TABLE ADD COLUMN
b. ALTER TABLE MODIFY
c. ALTER TABLE DROP COLUMN
d. ALTER TABLE RENAME COLUMN
Answer: a.
Explanation: The ALTER TABLE ADD COLUMN statement is used to add a new column to an existing table in MySQL. This is useful when you need to store additional information about the data in the table, or when you need to change the structure of the table to accommodate new requirements. For example, the following query would add a new column called “phone_number” to the “customers” table:
| ALTER TABLE customers ADD COLUMN phone_number VARCHAR(20); |
This would create a new column with a data type of VARCHAR(20), which is suitable for storing phone numbers.
The MySQL MCQs we have provided cover a range of important concepts and features of MySQL. These questions can help test your knowledge of the database and identify areas where you may need to improve your understanding. Whether you’re preparing for a job interview or simply looking to expand your knowledge of MySQL, practicing with this MYSQL MCQ Online Quiz that our Freshersnow team provided can be a great way to test and strengthen your skills. Remember, the more you practice, the more comfortable you will become with the database, and the better equipped you will be to use MySQL in your future projects.