Get startedGet started for free

Restricting groups

Earlier you created an overview of how many eSymphony customers live in each country. The output was a long list. Now, you want to restrict your results and only display countries with more than four customers. Since you grouped your output by country, you will now need to exclude values on a group-level rather than a row-level.

This exercise is part of the course

Introduction to Oracle SQL

View Course

Exercise instructions

  • Run the query. Note that it throws an error.
  • Adapt the query to show countries with more than four customers.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

-- Adapt the query below to show the correct results
SELECT Country, COUNT(*) AS Customers
FROM Customer
WHERE COUNT(*) > 4
GROUP BY Country
Edit and Run Code