oracle设置自增

//建表
drop table GUIDE_DATA;

create table GUIDE_DATA(

 id number(11) not null,

 detail varchar2(500) not null,

 type_id varchar2(10),

 subType_id varchar2(10),

 user_id varchar2(10),

 create_date Date,

constraint guide_pk primary key (id)

);

//建seq

create sequence guide_seq increment by 1 start with 1 nomaxvalue nocycle cache 10;
//建触发器，新增时触发

create or replace trigger guide_trigger

before insert on GUIDE_DATA for each row

begin

select guide_seq.nextval into :new.id from dual;

end;
//插入数据实验

insert into guide_data(detail, type_id, subType_id, user_id, create_date) values('111detail','0034','393040','zl',sysdate);

insert into guide_data(detail, type_id, subType_id, user_id, create_date) values('222detail','0035','393040','zl',sysdate);

insert into guide_data(detail, type_id, subType_id, user_id, create_date) values('333detail','0036','393040','zl',sysdate);

insert into guide_data(detail, type_id, subType_id, user_id, create_date) values('444detail','0037','393040','zl',sysdate);

insert into guide_data(detail, type_id, subType_id, user_id, create_date) values('555detail','0034','393040','zl',sysdate);

insert into guide_data(detail, type_id, subType_id, user_id, create_date) values('666detail','0034','393040','zl',sysdate);

commit;
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//删除seq

DROP SEQUENCE guide_seq;