Practice Group By Clause (5.2) - Structured Query Language (SQL) - Part 2
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Engineering Courses
Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Certifications
Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

GROUP BY Clause

Practice - GROUP BY Clause

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does the GROUP BY clause do in SQL?

💡 Hint: Think about how you would summarize information.

Question 2 Easy

Provide an example of an aggregate function.

💡 Hint: These functions give summaries about data.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main purpose of the GROUP BY clause?

To filter rows
To group rows for aggregation
To sort rows

💡 Hint: Think about how you summarize data.

Question 2

True or False: Every column in the SELECT statement must be in the GROUP BY clause unless it is an aggregate function.

True
False

💡 Hint: Consider how SQL processes the SELECT statement.

Get performance evaluation

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Create a SQL query to find out how many products belong to each category and also get the average price per category.

💡 Hint: Think about the information you want from each category.

Challenge 2 Hard

Consider you have sales data with customer ID and purchase amounts. Write a query that totals the purchase amounts for each customer but only includes customers with over three purchases.

💡 Hint: Utilize COUNT in your HAVING clause to filter customers.

Get performance evaluation

Reference links

Supplementary resources to enhance your learning experience.