Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind SQL GROUP BY Keyword?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ COUNT(CustomerID), Country3Order
Put the learning moves in the order that makes the concept easiest to apply.
The following SQL lists the number of customers in each country, sorted high to low:
The following SQL lists the number of customers in each country:
The GROUP BY command is used to group the result set (used with aggregate functions: COUNT, MAX, MIN, SUM, AVG).
Group By
The GROUP BY command is used to group the result set (used with aggregate functions: COUNT, MAX, MIN, SUM, AVG).
The following SQL lists the number of customers in each country:
Example
SELECT COUNT(CustomerID), Country
FROM Customers
GROUP BY Country;The following SQL lists the number of customers in each country, sorted high to low:
Example
SELECT COUNT(CustomerID), Country
FROM Customers
GROUP BY Country
ORDER BY COUNT(CustomerID) DESC;