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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.

Diese Übung ist Teil des Kurses

Introduction to Oracle SQL

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Anleitung zur Übung

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

Interaktive Übung

Versuche dich an dieser Übung, indem du diesen Beispielcode vervollständigst.

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