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Stamos Bolovinos4,320 Points
What's wrong with having 5th period science and 7th period art?
Why is this student a troublemaker? I don't get it. I mean I could build the query to get the result, but don't understand the context.
Steven Parker215,959 Points
I don't think the class schedule has anything to do with being a "troublemaker". I think the idea is just that these two class times are both clues to identifying a particular student.
As to exactly who is a "troublemaker" or why is not explained. I suspect this is a reference to this particular episode of the "XKCD" comic strip in which a student's middle name is actually an SQL injection security attack. In that case, the "troublemaker" would actually be the student's mom.
Little Bobby Tables! That's brilliant!
Aside: it's fun to not only get the joke, but now understand some of the actual coding behind it!