Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Dean Wiseman
20,901 PointsQuestion needs to be re-worded.
The question in this challenge need to be re-worded.
" In an ecommerce database there's an orders table with the columns id, product_id, user_id, address_id, ordered_on, status and cost.
Count the total number of orders that have the status of shipped yesterday. Alias it to shipped_yesterday. "
There is only an ordered_on date, there is no date showing when it was shipped.
It should say "Count the total number of orders that have the status of shipped and was ordered yesterday. Alias it to shipped_yesterday.
2 Answers

Mark Miller
45,831 PointsYou are right. The question assumes same-day shipping always happens!
SELECT count(*) AS "shipped_yesterday" FROM orders WHERE status = "shipped" AND ordered_on = DATE("now", "-1 day");

Dave McFarland
Treehouse TeacherYou're right! I've reworded the question to say
Count the total number of orders that have the
status
ofshipped
and were ordered yesterday. Alias it toshipped_yesterday
.
It's not 100% accurate, since they could have ordered yesterday, but shipped today, but this captures the flavor of the challenge, and gives you enough information to put the query together correctly. Thanks for reporting this.