Quick Reference
The GROUP BY keywords are used to group the result set (used with aggregate functions: COUNT, MAX, MIN, SUM, AVG).
The following lists the number of customers in each country.
SELECT COUNT(customer_id), country
FROM Customers
GROUP BY country;SQL Notes:
- Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.