Challenge: TODO list database stats

 is a programming challenge in the Intro to SQL: Querying and managing data course. This challenge practices aggregating data in SQL.

Steps
There are two steps in this challenge:
 * 1) Add data to the table: This step asks users to add data (a to-do list) to the table by using
 * 2) Add width and height attributes: This step asks users to select the sum of minutes by using.

If users get stuck
If users get stuck, they should:
 * Pay attention to Oh Noes and the error messages.
 * Go back to the "SQL basics" tutorial.