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matteo boni5,087 Points
Imagine you're a developer on a smartphone with an embedded database. There's a phone_book table with the fields, first_name, last_name and phone. Write the SQL query to order first by last_name and then by first_name in alphabetical order.
Select all columns.
Ascending order is the default, so you can do this:
SELECT * FROM phone_book ORDER BY last_name, first_name
Or, if you want to be explicit, you can do this:
SELECT * FROM phone_book ORDER BY last_name ASC, first_name ASC
SELECT * FROM phone_book ORDER BY last_name ASC, first_name ASC;