Create 1412-find-the-quiet-students-in-all-exams.sql

Author: everthis

1412-find-the-quiet-students-in-all-exams.sql

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+# Write your MySQL query statement below
+WITH cte AS(
+    SELECT exam_id, exam.student_id, student_name, score, RANK() OVER(PARTITION BY exam_id ORDER BY score) rk1, RANK() OVER(PARTITION BY exam_id ORDER BY score DESC) rk2 
+    FROM exam LEFT JOIN student
+    ON exam.student_id = student.student_id
+)
+
+SELECT DISTINCT student_id, student_name
+FROM cte
+WHERE student_id NOT IN (SELECT student_id FROM cte WHERE rk1 = 1 or rk2 = 1)
+ORDER BY student_id;