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Project/test_queries.sql

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+
+-- Show all students with their section info Should work
+SELECT s.student_first_name, s.student_last_name, ls.lab_course_code, c.course_title, t.term_name
+FROM student s
+JOIN student_section ss ON s.student_id = ss.ss_student_id
+JOIN lab_section ls ON ss.ss_section_id = ls.lab_section_id
+JOIN course c ON ls.lab_course_code = c.course_code
+JOIN term t ON ls.lab_term_code = t.term_code;
+
+-- Count students per lab section Should work
+SELECT ls.lab_course_code, COUNT(ss.ss_student_id) AS total_students
+FROM lab_section ls
+LEFT JOIN student_section ss ON ls.lab_section_id = ss.ss_section_id
+GROUP BY ls.lab_course_code;
+
+-- View audit log Should work as intended
+SELECT pcl.chl_change_id, ua.user_full_name AS actor, pcl.chl_reason, pcl.chl_changed_at
+FROM progress_change_log pcl
+JOIN user_account ua ON pcl.chl_changed_by = ua.user_id;
+
+-- returns students names and sets
+SELECT student_first_name, student_last_name, student_set_code
+FROM student ORDER BY student_set_code ASC;
+
+-- This should fail and not work
+INSERT INTO course (course_code, course_title, credits)
+VALUES ('COMP9999', 'Invalid Credits', 0);
+
+-- Delete a lab section -> should also delete lab_event
+-- and progress automatically cause of cascade
+DELETE FROM lab_section WHERE lab_section_id = 'L01';
+
+-- Check remaining events and progress
+-- all should be empty due to cascade
+SELECT * FROM lab_event WHERE lab_event.le_section_id = 'L01';
+
+SELECT * FROM progress JOIN lab_event ON progress.pgr_event_id = lab_event.le_id
+WHERE lab_event.le_section_id = 'L01';
+
+SELECT * FROM progress_change_log JOIN progress ON progress_change_log.chl_progress_id = progress.pgr_id
+JOIN lab_event ON progress.pgr_event_id = lab_event.le_id
+WHERE lab_event.le_section_id = 'L01';