initial commit

Project/01_guided_control_queries.sql

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+-- 1.
+SELECT le_section_id, lab_set_code, course_code, la_title, lab_day_of_week
+FROM lab_event
+INNER JOIN lab_section
+ON lab_section.lab_section_id = lab_event.le_section_id
+INNER JOIN lab_assignment
+ON lab_assignment.la_lab_number = lab_event.le_number
+WHERE term_code = '202530';
+
+-- 2.
+SELECT pgr_student_id, COUNT(*) AS labs_attended
+FROM progress
+GROUP BY pgr_student_id;
+
+-- 3.
+SELECT pgr_student_id, student_set_code, lab_section_id, COUNT(*) FILTER (WHERE pgr_late 1= 'f') AS late_submissions
+FROM progress
+INNER JOIN student
+ON student.student_id = progress.pgr_student_id
+INNER JOIN lab_section
+ON student.student_set_code = lab_section.lab_set_code
+GROUP BY pgr_student_id, student_set_code, lab_section_id;
+
+-- 4.
+SELECT student_set_code, TO_CHAR(AVG(pgr_instructor_assessment::numeric), 'FM999999.00') AS section_average
+FROM progress
+INNER JOIN student
+    ON student.student_id = progress.pgr_student_id
+GROUP BY student_set_code
+ORDER BY student_set_code;
+
+-- 5.
+SELECT student_first_name || ' ' || student_last_name AS student_name, student_set_code, le_number
+FROM student
+INNER JOIN progress
+ON progress.pgr_student_id = student.student_id
+INNER JOIN lab_event
+ON lab_event.le_id = progress.pgr_event_id
+WHERE pgr_instructor_assessment IS NULL OR pgr_self_assessment IS NULL;
+
+-- 6.
+SELECT student_id, student_first_name || ' ' || student_last_name AS student_name, student_set_code, TO_CHAR(AVG(pgr_instructor_assessment::numeric), 'FM999999.00') AS student_average
+FROM student
+JOIN progress
+ON student.student_id = progress.pgr_student_id
+GROUP BY student_id, student_first_name, student_last_name, student_set_code
+HAVING AVG(pgr_instructor_assessment::numeric) >= 4.5
+ORDER BY student_id;