Good question Sergey. This cursor is going to be used as the controlsource for a variety of reports. One of the options presented to the user is to print a report for an individual student or all of the students in the course. To accomplish this, I want to add another expression to the WHERE clause...
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WHERE courses.iid = iCourseId AND students.iid = iStudentId
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If wildcards are an option, I have the flexibility of using the cursor for both situations; one dataenvironment, one cursor to maintain for more than a dozen reports.

Thanks!
Steve