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3月调考/MySQL.md

@@ -545,5 +545,40 @@ SET FOREIGN_KEY_CHECKS = 1;
 ### 答案
 
 ```sql
+#1
+CREATE TABLE t_teacher(
+	id INT(8) PRIMARY KEY,
+	`name` VARCHAR(10),
+	nikename VARCHAR(20),
+	introduce text
+);
+
+#2
+INSERT INTO t_student()
+VALUES(10101, '王梓星', 'username123', 'password123');
+
+#3
+DELETE FROM t_course
+WHERE id = 10004;
+
+#4
+UPDATE t_video v
+SET v.link = 'www.shipin.mp4'
+WHERE v.id = 10005;
+
+#5 tj11
+SELECT COUNT(*) 'total_students'
+FROM t_student;
+
+#6
+SELECT v.id '视频编号', v.title '标题', v.link '链接地址'
+FROM t_video v, t_course c
+WHERE v.c_id = c.id AND c.`name` = '语文';
+
+#7
+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;
 ```