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

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

True

False

2 / 20

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

True

False

3 / 20

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

HIGHEST()

TOTAL()

SUM

MAX()

4 / 20

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

FILTER BY

ORDER BY

SORT BY

GROUP BY

5 / 20

Identify the error in the following SQL code:

SELECT name salary FROM employees;

Missing comma between "name" and "salary"

Incorrect column name

Incorrect table name

Missing table alias

6 / 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 column name

Incorrect date format

No error

7 / 20

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

JOIN

MERGE

UNION

INTERSECT

8 / 20

How do you remove duplicate records in the result set?

GROUP BY

DISTINCT

FILTER

UNIQUE

9 / 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

10 / 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

11 / 20

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

CLEAR

REMOVE

DROP

DELETE

12 / 20

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

SELECT ______(*) FROM employees;

TOTAL

COUNT

NUMBER

SUM

13 / 20

What is the purpose of the GROUP BY clause?

To sort data

To aggregate data based on one or more columns

To filter data

To combine tables

14 / 20

Which SQL command will add a new column "email" to the "employees" table?

INSERT COLUMN email INTO employees;

ADD COLUMN email TO employees;

MODIFY TABLE employees ADD COLUMN email;

ALTER TABLE employees ADD COLUMN email VARCHAR(255);

15 / 20

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

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

MATCHES

EQUALS

16 / 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';

ALTER

UPDATE

CHANGE

MODIFY

17 / 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

INCLUDE INTO

ADD TO

18 / 20

What does the COUNT() function do?

Calculates the total of a numeric column

Counts the number of columns

Counts the number of distinct values

Counts the number of rows

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

The DROP command removes specific rows from a table.

True

False

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.