Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Databases Reporting with SQL Date and Time Functions Calculating Dates

Posted by Katie Martens
Katie Martens
1,962 Points

Counting orders from yesterday from an ecommerce database

I'm not sure where I'm messing up this query, is the DATE wrong? Should it be BETWEEN DATE?

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

Please show the query string you were using so we can identify the issue, but you shouldn't need "BETWEEN".

3 Answers

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

You're close! You calculated the correct date but forgot to compare it to the data column:

SELECT COUNT(*) AS ordered_yesterday_and_shipped
FROM orders
WHERE ordered_on = DATE("now", "-1 day") AND status = "shipped";
--    ^^^^^^^^^^^^

Also note that both comparisons are placed after the "WHERE" keyword.

Katie Martens
Katie Martens
1,962 Points
Katie Martens
Katie Martens
1,962 Points

Here is a variation of the query I keep trying:

SELECT COUNT(*) AS ordered_yesterday_and_shipped FROM orders DATE("now", "-1 day") AND WHERE status = "shipped";

Katie Martens
Katie Martens
1,962 Points
Katie Martens
Katie Martens
1,962 Points

THANK YOU!