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;