一、创建序列
- create sequence SEQ_USER_ID
- minvalue 1
- maxvalue 99999999999
- start with 1
- increment by 1;
二、创建数据库表
- create table MS_USER(
- user_id number(11) not null primary key,mobile_phone varchar2(16) not null,user_name varchar2(32) not null
- );
- -- 增加数据库表备注和表字段的备注信息
- comment on table MS_USER is '用户信息表';
- comment on column MS_USER.user_id is '用户ID';
- comment on column MS_USER.mobile_phone is '手机号码';
- comment on column MS_USER.user_name is '用户名称';
三、创建触发器
- create or replace trigger MS_USER_TRIGGER
- before insert on MS_USER
- for each row
- begin
- select SEQ_USER_ID.nextval into :new.user_id from dual;
- end ;
- /
四、测试
插入记录:
- insert into MS_USER(mobile_phone,user_name) values('12345678901','Kevin');
查询记录:
- select * from ms_user;