1.创建表

create table student(

id number(19) not null,

name varchar2(20),

sex number(2),

primary key(id)

)

2.创建序列

create sequence s_student

increment by 1

start with 1

nomaxvalue

nocycle

nocache

3.插入若干条数据

insert into student values(s_student.nextval, 'student001',

0);

insert into student values(s_student.nextval, 'student002',

0);

insert into student values(s_student.nextval, 'student003',

0);

insert into student values(s_student.nextval, 'student004',

0);

insert into student values(s_student.nextval, 'student005', 0);

4.复制数据并插入当前表的语句

insert into

student

select s_student.nextval, student.name, student.sex from

student;