oracle9i主键自动增长

drop SEQUENCE SEQ_USER_ID;

CREATE SEQUENCE SEQ_USER_ID
START WITH 1001
NOMAXVALUE
NOCYCLE
NOCACHE
NOORDER;

drop table users;

create table users(
 id integer not null,
 username varchar2(20) not null,
 password varchar2(20) not null,
 primary key (id)
);

INSERT INTO users VALUES(SEQ_USER_ID.NEXTVAL,'kop','123');
INSERT INTO users VALUES(SEQ_USER_ID.NEXTVAL,'admin','admin');
commit;