Oracle中序列的用法

創建sequence

create sequence hero_seq

increment by 1

start with 1

maxvalue 9999999

解釋：hero_seq：一般是表明_seq

使用sequence

select hero_seq.nextval from dual

獲取hero_seq的下一個值

select hero_seq.currval from dual

獲取hero_seq的當前值

作爲id插入到表中

insert into hero (id,name,hp,mp,damage,armor,speed) values(hero_seq.nextval,'炸彈人',450,200,45,3,300);