Deals Of The Week - hours only!Up to 80% off on all courses and bundles.-Close

Wrap course as a gift

Prepare your gift and double-check it looks just right.

Form validation errors

Recipient's Name:
Recipient's Email:
Your Message (Optional):
Proceed to Checkout

Recursive Queries in PostgreSQL

Introduction
Quiz
7. Exercise 3
Congratulations

Instruction

Fantastic! Let's go on to another exercise. Now we'll test your knowledge of the COUNT aggregate function.

Exercise

Find the number of ingredients in each ingredient type. Name the columns type and number_of_ingredients.

Stuck? Here's a hint!

Use the COUNT aggregate function.

To group results by type, you must know how to use the GROUP BY clause. If you don't, take a look at Basics of PostgreSQL Part 4: Aggregation and grouping.