create table menu( menuId number(10) not null primary key,
name varchar2(40) not null,
id_parent number(10) not null,
url varchar2(300) null);
创建序列menu_autoinc_seq:
create sequence menu_autoinc_seq
minvalue 1
maxvalue 99999999
start with 1
increment by 1
nocycle
nocache
order;
创建触发器menu_autoinc_tg:
create or replace trigger menu_autoinc_tg
before insert on menu for each row
begin
select menu_autoinc_seq.nextval into :new.menuId from dual;
end menu_autoinc_tg;
