Oracle數字類型number自增的實現代碼

創建序列

?

1 2 3 4 5 6 7

create sequence seq_student start with 6 increment by 1 maxvalue 500 nominvalue nocycle nocache;

創建觸發器

?

1 2 3 4 5 6 7

create or replace trigger trigger_student before insert on student for each row  declare BEGIN select seq_student.nextval into :new.id from dual; END;