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SQL PRACTICE SET

SQL Test

SQ TEST 1

1 / 25

Which SQL function is used to find the lowest value in a column?

BOTTOM()

LOW()

MIN()

LEAST()

2 / 25

What does the COUNT(*) function do in SQL?

Counts the total number of rows in a table

Counts the number of NULL values in a column

Counts the distinct values in a column

Counts the unique values in a column

3 / 25

Which SQL function is used to find the highest value in a column?

HIGH()

MAX()

GREATEST()

TOP()

4 / 25

What is the purpose of the SUM() function in SQL?

To find the total count of rows

To calculate the median value

To calculate the sum of values in a column

To find the maximum value

5 / 25

Which SQL function is used to find the average value of a numeric column?

AVG()

AVERAGE()

MEAN()

TOTAL()

6 / 25

Which SQL command is used to delete a table?

DELETE

REMOVE

DROP

ERASE

7 / 25

How can you add a new column to an existing table in SQL?

ALTER TABLE ADD COLUMN

MODIFY TABLE ADD COLUMN

UPDATE TABLE ADD COLUMN

ADD COLUMN TO TABLE

8 / 25

What is the purpose of the PRIMARY KEY constraint in a table?

It enforces uniqueness on a column

It allows NULL values in a column

It adds a default value to a column

It specifies a foreign key relationship

9 / 25

Which SQL command is used to create a new table?

INSERT

CREATE

ADD

MAKE

10 / 25

Which data type is used to store a fixed-length character string?

TEXT

CHAR

VARCHAR

STRING

11 / 25

Which keyword is used to retrieve distinct values from a column?

DISTINCT

UNIQUE

DIFFERENT

UNCOMMON

12 / 25

Which operator is used to compare a value to a set of values returned by a subquery?

BETWEEN

EXISTS

13 / 25

What is a subquery in SQL?

A query that updates data

A query that retrieves data from multiple tables

A query that is used to create a new table

A query nested inside another query

14 / 25

Which type of join returns all records from the left table and matching records from the right table?

INNER JOIN

LEFT JOIN

RIGHT JOIN

OUTER JOIN

15 / 25

What is the purpose of the INNER JOIN in SQL?

To combine rows from two or more tables based on a common column

To retrieve all rows from both tables, even if there are no matches

To retrieve only unique rows from both tables

To retrieve the first row from each table

16 / 25

Which SQL command is used to update data in a table?

ALTER

UPDATE

MODIFY

CHANGE

17 / 25

Which SQL clause is used to sort the result set in ascending or descending order?

ARRANGE BY

SORT

ORDER BY

SEQUENCE BY

18 / 25

What is the purpose of the GROUP BY clause in SQL?

To order the results

To group rows that have the same values into summary rows

To filter rows based on a condition

To perform mathematical calculations on columns

19 / 25

Which SQL function is used to count the number of rows in a table?

COUNT()

TOTAL()

SUM()

LENGTH()

20 / 25

Which keyword is used to retrieve all columns from a table?

SELECT *

SELECT ALL

GET *

FETCH ALL

21 / 25

In SQL, which clause is used to specify a condition while retrieving data?

WHERE

HAVING

GROUP

ORDER

22 / 25

Which SQL command is used to retrieve data from a database?

FIND

EXTRACT

SELECT

RETRIEVE

23 / 25

What is a primary key in a MySQL table?

A unique identifier for a table

A column that stores large text data

A virtual table used for performance optimization

A column that can hold multiple values

24 / 25

Which of the following is a relational database management system (RDBMS)?

MongoDB

SQLite

Redis

PostgreSQL

25 / 25

What does MySQL stand for?

My Server Language

My Structured Language

My Structured Query Language

My Sequential Query Language

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Interview Questions

SQL PRACTICE SET

Which SQL function is used to find the lowest value in a column?

What does the COUNT(*) function do in SQL?

Which SQL function is used to find the highest value in a column?

What is the purpose of the SUM() function in SQL?

Which SQL function is used to find the average value of a numeric column?

Which SQL command is used to delete a table?

How can you add a new column to an existing table in SQL?

What is the purpose of the PRIMARY KEY constraint in a table?

Which SQL command is used to create a new table?

Which data type is used to store a fixed-length character string?

Which keyword is used to retrieve distinct values from a column?

Which operator is used to compare a value to a set of values returned by a subquery?

What is a subquery in SQL?

Which type of join returns all records from the left table and matching records from the right table?

What is the purpose of the INNER JOIN in SQL?

Which SQL command is used to update data in a table?

Which SQL clause is used to sort the result set in ascending or descending order?

What is the purpose of the GROUP BY clause in SQL?

Which SQL function is used to count the number of rows in a table?

Which keyword is used to retrieve all columns from a table?

In SQL, which clause is used to specify a condition while retrieving data?

Which SQL command is used to retrieve data from a database?

Which of the following is a relational database management system (RDBMS)?

What does MySQL stand for?

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Interview Questions

SQL PRACTICE SET

Which SQL function is used to find the lowest value in a column?

What does the COUNT(*) function do in SQL?

Which SQL function is used to find the highest value in a column?

What is the purpose of the SUM() function in SQL?

Which SQL function is used to find the average value of a numeric column?

Which SQL command is used to delete a table?

How can you add a new column to an existing table in SQL?

What is the purpose of the PRIMARY KEY constraint in a table?

Which SQL command is used to create a new table?

Which data type is used to store a fixed-length character string?

Which keyword is used to retrieve distinct values from a column?

Which operator is used to compare a value to a set of values returned by a subquery?

What is a subquery in SQL?

Which type of join returns all records from the left table and matching records from the right table?

What is the purpose of the INNER JOIN in SQL?

Which SQL command is used to update data in a table?

Which SQL clause is used to sort the result set in ascending or descending order?

What is the purpose of the GROUP BY clause in SQL?

Which SQL function is used to count the number of rows in a table?

Which keyword is used to retrieve all columns from a table?

In SQL, which clause is used to specify a condition while retrieving data?

Which SQL command is used to retrieve data from a database?

Which of the following is a relational database management system (RDBMS)?

What does MySQL stand for?

The Full Stack Web Development Course

The Complete Graphic Designing Course

The Complete Digital Marketing Course​

Join Thousand Of Happy Students!

Popular courses

Location

Contact Us

Student Corner

Verify Certificate

The Complete Digital Marketing Course