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+![输入图片说明](../%E5%95%86%E5%93%81%E7%AE%A1%E7%90%86%E7%B3%BB%E7%BB%9Fcmd.png)
+代码：
+
+```
+/*==============================================================*/
+/* DBMS name:      MySQL 5.0                                    */
+/* Created on:     2024/9/7 10:30:12                            */
+/*==============================================================*/
+
+
+drop table if exists customer;
+
+drop table if exists goods;
+
+drop table if exists including;
+
+drop table if exists orders;
+
+drop table if exists users;
+
+/*==============================================================*/
+/* Table: customer                                              */
+/*==============================================================*/
+create table customer
+(
+   ࠍ֧ۧ۰                 int,
+   ࠍۧѕĻ                 varchar(255),
+   ࠍۧєҰ                 varchar(255),
+   ࠍۧҠۅ                 int not null,
+   uid                  int,
+   primary key (ࠍۧҠۅ)
+);
+
+/*==============================================================*/
+/* Table: goods                                                 */
+/*==============================================================*/
+create table goods
+(
+   gid                  int not null,
+   gname                float,
+   gprice               float,
+   primary key (gid)
+);
+
+/*==============================================================*/
+/* Table: including                                             */
+/*==============================================================*/
+create table including
+(
+   gid                  int not null,
+   oid                  int not null,
+   primary key (gid, oid)
+);
+
+/*==============================================================*/
+/* Table: orders                                                */
+/*==============================================================*/
+create table orders
+(
+   oid                  int not null,
+   ࠍۧҠۅ                 int,
+   uid                  int,
+   oprice               float,
+   cmessage             varchar(255),
+   primary key (oid)
+);
+
+/*==============================================================*/
+/* Table: users                                                 */
+/*==============================================================*/
+create table users
+(
+   uid                  int not null,
+   ࠍۧҠۅ                 int,
+   uname                varchar(255),
+   upsw                 varchar(255),
+   primary key (uid)
+);
+
+alter table customer add constraint FK_manage2 foreign key (uid)
+      references users (uid) on delete restrict on update restrict;
+
+alter table including add constraint FK_including foreign key (gid)
+      references goods (gid) on delete restrict on update restrict;
+
+alter table including add constraint FK_including2 foreign key (oid)
+      references orders (oid) on delete restrict on update restrict;
+
+alter table orders add constraint FK_order foreign key (ࠍۧҠۅ)
+      references customer (ࠍۧҠۅ) on delete restrict on update restrict;
+
+alter table orders add constraint FK_responsible foreign key (uid)
+      references users (uid) on delete restrict on update restrict;
+
+alter table users add constraint FK_manage foreign key (ࠍۧҠۅ)
+      references customer (ࠍۧҠۅ) on delete restrict on update restrict;
+
+```
+
+简单查询：
+```
+SELECT * FROM goods;
+
+SELECT gprice FROM goods WHERE gid=2;
+```