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3月调考/MySQL.md

@@ -580,5 +580,25 @@ CREATE VIEW v_education AS
 SELECT s.`name` '学生姓名', c.`name` '课程名称', l.`schedule` '学习进度', l.createtime '创建时间'
 FROM t_student s, t_learn l, t_course c
 WHERE s.id = l.s_id AND l.c_id = c.id;
+
+#8
+CREATE TRIGGER tri_insert_student_learn 
+AFTER INSERT ON t_student 
+FOR EACH ROW 
+BEGIN
+    INSERT INTO t_learn (s_id, c_id, schedule, createtime)
+    VALUES (NEW.id, 10001, 0, '2025-01-01');
+END
+
+#9
+CREATE PROCEDURE `sp_get_student_courses`(
+    IN in_student_id INT,
+    OUT out_course_count INT
+)
+BEGIN
+    SELECT COUNT(DISTINCT c_id) INTO out_course_count
+    FROM t_learn
+    WHERE s_id = in_student_id ;
+END
 ```