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 SQL Reporting by Example Day 2: Advanced Selecting Students by Grade

How to find the discrepancy between the current grade 7 students and the future grade 6 students who move to grade 7?

Grade 6 has 190 students and it grade 7 has 173 student.

Is it possible to write a query to find out the discrepancy between these 2 grades.

Thaknks

1 Answer

Steven Parker
Steven Parker
231,110 Points

I'm not sure what you mean by "discrepancy". Can you explain what that would mean in terms of the data?

The sets of students in each grade are entirely different, and there is no overlap between them.