Oracle插入设置字段默认值并自增

1、创建序列

create sequence BS_ROLE_SEQ
increment by 1 
start with 10001 
nomaxvalue 
nocycle 
nocache

BS_ROLE_SEQ序列名，随意更改
2、创建触发器

create or replace trigger TABLE_NAME_trigger 
before insert on TABLE_NAME
for each row
begin
select BS_ROLE_SEQ.nextval into:NEW.ID from dual;
end;

TABLE_NAME_trigger触发器名，随意更改
TABLE_NAME表名
ID自增字段字段名