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 Aggregate and Numeric Functions Counting Groups

Jason Kirkpatrick
Jason Kirkpatrick
2,117 Points
Posted by Jason Kirkpatrick
Jason Kirkpatrick
2,117 Points

Can't seem to get this, though I think I'm counting the numbers of books in each genre instead of each genre. How?

SELECT DISTINCT COUNT(genre) as total_genres FROM books GROUP BY genre;

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

In task 2, it's the genres you want to be unique, not the count itself. Also, you won't need to use grouping for this one.