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

What does the LIKE operator do?

Joins two tables

Compares exact matches

Groups similar data

Searches for a specified pattern in a column

2 / 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);

APPEND TO

INSERT INTO

ADD TO

INCLUDE INTO

3 / 20

What does the SELECT statement do in Snowflake?

Deletes data from a table

Inserts data into a table

Updates data in a table

Retrieves data from a table

4 / 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';

Incorrect date format

No error

Missing semicolon

Incorrect column name

5 / 20

What is the purpose of the WHERE clause?

To join data

To filter data

To group data

To sort data

6 / 20

Identify the error in the following SQL code:

SELECT name salary FROM employees;

Incorrect column name

Incorrect table name

Missing table alias

Missing comma between "name" and "salary"

7 / 20

What does the COUNT() function do?

Calculates the total of a numeric column

Counts the number of rows

Counts the number of columns

Counts the number of distinct values

8 / 20

Which SQL clause is used to remove rows from a table?

DROP

REMOVE

CLEAR

DELETE

9 / 20

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

SELECT ______(*) FROM employees;

SUM

NUMBER

TOTAL

COUNT

10 / 20

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

RETRIEVE * FROM employees

FETCH * FROM employees

GET * FROM employees

SELECT * FROM employees

11 / 20

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

True

False

12 / 20

The DROP command removes specific rows from a table.

False

True

13 / 20

Which statement updates the "salary" column in the "employees" table for employees with the job title "Manager"?

UPDATE employees SET salary = salary + 1000 WHERE job_title = 'Manager';

UPDATE

ALTER

CHANGE

MODIFY

14 / 20

How do you remove duplicate records in the result set?

UNIQUE

GROUP BY

DISTINCT

FILTER

15 / 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

16 / 20

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

GROUP BY

ORDER BY

SORT BY

FILTER BY

17 / 20

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

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

EQUALS

MATCHES

18 / 20

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

ALTER

INSERT

UPDATE

MODIFY

19 / 20

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

SELECT department FROM students;

SELECT UNIQUE department FROM students;

SELECT DISTINCT department FROM students;

SELECT ALL department FROM students;

20 / 20

What is the purpose of the GROUP BY clause?

To filter data

To combine tables

To sort data

To aggregate data based on one or more columns

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.