Basic SQL Queries in Snowflake: Beginner-Level Quiz

SQL queries form the backbone of any database interaction, and Snowflake is no exception. Understanding how to write and execute basic SQL queries is crucial to Snowflake's data warehousing capabilities. This beginner-level quiz covers general concepts, practical applications, code completion, and true/false questions. Test your knowledge and ensure you have a solid foundation of SQL queries in Snowflake.

1 / 20

Fill in the blank to find all employees whose name starts with 'A':

SELECT * FROM employees WHERE name _______ 'A%';

MATCHES

EQUALS

2 / 20

What does the HAVING clause do in Snowflake?

Sorts the result set

Specifies the join condition

Limits the number of rows returned

Filters groups based on a condition

3 / 20

The UPDATE command is used to modify existing records in a table.

True

False

4 / 20

Identify the error in the following SQL code:

SELECT name salary FROM employees;

Missing comma between "name" and "salary"

Incorrect table name

Missing table alias

Incorrect column name

5 / 20

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

MAX()

SUM

HIGHEST()

TOTAL()

6 / 20

Which SQL command would you use to add a new employee with the name "John Doe" and a salary of 50000 to the "employees" table?

_________ employees (name, salary) VALUES ('John Doe', 50000);

ADD TO

INCLUDE INTO

INSERT INTO

APPEND TO

7 / 20

What is the purpose of the WHERE clause?

To group data

To join data

To filter data

To sort data

8 / 20

Which keyword is used to combine the results of two SQL queries?

INTERSECT

JOIN

MERGE

UNION

9 / 20

How do you retrieve the names of employees who earn more than 60000 from the "employees" table?

SELECT name FROM employees WHERE salary < 60000

SELECT name FROM employees WHERE salary >= 60000

SELECT name FROM employees WHERE salary > 60000

SELECT name FROM employees WHERE salary != 60000

10 / 20

How do you retrieve the distinct departments from the "students" table?

SELECT DISTINCT department FROM students;

SELECT ALL department FROM students;

SELECT UNIQUE department FROM students;

SELECT department FROM students;

11 / 20

The SELECT statement can only retrieve data from one table at a time.

True

False

12 / 20

What does the COUNT() function do?

Counts the number of columns

Counts the number of rows

Counts the number of distinct values

Calculates the total of a numeric column

13 / 20

Fill in the blank to get the total count of employees:

SELECT ______(*) FROM employees;

COUNT

TOTAL

NUMBER

SUM

14 / 20

Which statement correctly retrieves all records from the "employees" table?

RETRIEVE * FROM employees

SELECT * FROM employees

FETCH * FROM employees

GET * FROM employees

15 / 20

Identify the error in the following SQL code that selects employees hired after January 1, 2020:

SELECT * FROM employees WHERE hire_date > '2020-01-01';

Missing semicolon

Incorrect date format

Incorrect column name

No error

16 / 20

The UNION operator combines the results of two SQL queries without removing duplicates.

True

False

17 / 20

What does the SELECT statement do in Snowflake?

Deletes data from a table

Retrieves data from a table

Inserts data into a table

Updates data in a table

18 / 20

Which command is used to change data in an existing table?

ALTER

MODIFY

UPDATE

INSERT

19 / 20

How do you add a new column to an existing table?

ALTER TABLE

MODIFY TABLE

CHANGE TABLE

ADD COLUMN

20 / 20

What does the LIKE operator do?

Compares exact matches

Groups similar data

Joins two tables

Searches for a specified pattern in a column

Your score is

The average score is 47%

This beginner-level quiz will test your knowledge of basic SQL queries in Snowflake. As a new user, this quiz will help you learn the fundamental SQL commands that make Snowflake a powerful cloud data platform.

Snowflake is unique in data warehousing because it manages structured and semi-structured data with unmatched adaptability and scalability. A solid understanding of SQL queries is required to utilize its capabilities fully.

Take this quiz if you want:

to test your knowledge of Snowflake’s essential SQL commands.
practical questions that mimic real-world situations.
to develop confidence and readiness for more advanced topics.

Good luck.