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Mike Nedelko
8,991 PointsIs there an error in the calculation?
So I formulated my query slightly differently and came to notice that the result is 45. I checked the data and noticed that there are two duplicates if we formulate the request in the same way as in the video. Here my solution:
''' SQL SELECT COUNT(DISTINCT(STUDENTS.FIRST_NAME)) FROM STUDENTS JOIN SCHEDULE ON SCHEDULE.STUDENT_ID = STUDENTS.ID JOIN CLASSES ON SCHEDULE.CLASS_ID = CLASSES.ID JOIN SUBJECTS ON CLASSES.SUBJECT_ID = SUBJECTS.ID WHERE SUBJECTS.NAME = "Physical Education" AND PERIOD_ID = 1 ORDER BY STUDENTS.FIRST_NAME; '''
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 PointsBrendan Whiting
Front End Web Development Techdegree Graduate 84,738 PointsWhat challenge or exercise does this go with?