Experiment: How does ep_students capture multiple course registrations per user?

This query is marked as a draft This query has been published by Tflanagan (WMF).

Answer: it only seems to capture the most recent registration. So if a user has been in multiple courses, this table is not accurate for older courses.

:-/

Result is 26 rows, but ep_courses has 41 registered students!
There doesn't seem to be a difference here between student_first_course and student_last_course

SQL

USE arwiki_p; #set the language/project

#Table of students for a particular course
SELECT * FROM ep_students
WHERE student_last_course = 32;

#Result is 26 rows, but ep_courses has 41 registered students!

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