diff --git "a/18 \345\276\220\346\260\270\346\267\263/20230913\344\275\234\344\270\232.md" "b/18 \345\276\220\346\260\270\346\267\263/20230913\344\275\234\344\270\232.md"
new file mode 100644
index 0000000000000000000000000000000000000000..9e7cdd3ea807a208f8c7f9f98b75961feddd06fa
--- /dev/null
+++ "b/18 \345\276\220\346\260\270\346\267\263/20230913\344\275\234\344\270\232.md"	
@@ -0,0 +1,118 @@
+```mysql
+/*==============================================================*/
+/* DBMS name:      MySQL 5.0                                    */
+/* Created on:     2023/9/13 21:29:20                           */
+/*==============================================================*/
+create database hospital charset utf8;
+
+use hospital;
+
+drop table if exists DEPARTMENT;
+
+drop table if exists DISPENSARY;
+
+drop table if exists DOCTOR;
+
+drop table if exists PATIENT;
+
+drop table if exists PRESCRIPT;
+
+/*==============================================================*/
+/* Table: DEPARTMENT                                            */
+/*==============================================================*/
+create table DEPARTMENT #科室
+(
+   DEPARTMENT_ID        int not null auto_increment,
+   DEPARTMENT_NUMBER    varchar(20) not null,
+   primary key (DEPARTMENT_ID)
+);
+
+insert into department values (null,110);
+
+insert into department values (null,119);
+
+insert into department values (null,120);
+
+insert into department values (null,911);
+
+insert into department values (null,100086);
+
+insert into department values (null,12345);
+
+/*==============================================================*/
+/* Table: DISPENSARY                                            */
+/*==============================================================*/
+create table DISPENSARY #取药
+(
+   DISPENSARY_ID        int not null auto_increment,
+   DISPENSARY_NAME      varchar(10) not null,
+   DISPENSARY_USAGE     varchar(100) not null,
+   primary key (DISPENSARY_ID)
+);
+
+insert into dispensary values (null,'吗丁啉','饭后吃');
+
+/*==============================================================*/
+/* Table: DOCTOR                                                */
+/*==============================================================*/
+create table DOCTOR #医生
+(
+   DOCTOR_ID            int not null auto_increment,
+   DEPARTMENT_ID        int ,
+   DOCTOR_NAME          varchar(10) not null,
+   DOCTOR_AGE           int not null,
+   DOCTOR_GENDER        char(1) not null,
+   primary key (DOCTOR_ID)
+);
+
+insert  into doctor values (1,1,'东方饭店',12,'男');
+
+insert  into doctor values (null,2,'西方饭店',21,'女');
+
+
+/*==============================================================*/
+/* Table: PATIENT                                               */
+/*==============================================================*/
+create table PATIENT #病人
+(
+   PATIENT_ID           int not null auto_increment,
+   DOCTOR_ID            int,
+   PATIENT_NAME         varchar(10) not null,
+   PATIENT_GENDER       char(1) not null,
+   PATIENT_NUMBER       varchar(20) not null,
+   primary key (PATIENT_ID)
+);
+
+insert into patient values (null,1,'本地接送','男','12138');
+
+insert into patient values (null,2,'外地接送','女','12333');
+
+/*==============================================================*/
+/* Table: PRESCRIPT                                             */
+/*==============================================================*/
+create table PRESCRIPT #药方
+(
+   DISPENSARY_ID        int not null,
+   PATIENT_ID           int not null,
+   primary key (DISPENSARY_ID, PATIENT_ID)
+);
+
+insert into prescript values (1,1);
+
+insert into prescript values (2,2);
+
+alter table DOCTOR add constraint FK_SUBORDINATE foreign key (DEPARTMENT_ID)
+      references DEPARTMENT (DEPARTMENT_ID) on delete restrict on update restrict;
+
+alter table PATIENT add constraint FK_DIAGNOSE foreign key (DOCTOR_ID)
+      references DOCTOR (DOCTOR_ID) on delete restrict on update restrict;
+
+alter table PRESCRIPT add constraint FK_PRESCRIPT foreign key (DISPENSARY_ID)
+      references DISPENSARY (DISPENSARY_ID) on delete restrict on update restrict;
+
+alter table PRESCRIPT add constraint FK_PRESCRIPT2 foreign key (PATIENT_ID)
+      references PATIENT (PATIENT_ID) on delete restrict on update restrict;
+
+
+```
+
diff --git "a/18 \345\276\220\346\260\270\346\267\263/20230913\347\254\224\350\256\260.md" "b/18 \345\276\220\346\260\270\346\267\263/20230913\347\254\224\350\256\260.md"
new file mode 100644
index 0000000000000000000000000000000000000000..4978f3e454c0fdde43b644d29eaa0d4930fffab7
--- /dev/null
+++ "b/18 \345\276\220\346\260\270\346\267\263/20230913\347\254\224\350\256\260.md"	
@@ -0,0 +1 @@
+若表内字段有多个值时，可将这个值单独取出新建一个表
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