oracle 自增字段 触发器

CREATE SEQUENCE DATA_CHANGE_ID INCREMENT BY 1 START WITH 1 
     MAXVALUE 999999999 MINVALUE 1 NOCYCLE 
     NOCACHE NOORDER

create or replace trigger DATAADD
before insert on DATA_CHANGE_RECORD
for each row
begin
  new.CHANGEID=DATA_CHANGE_ID.nextval;
end;

穿件触发器报错了，请问这几句话有错吗
[解决办法]
sequence 不能这么用吧。
应该
SELECT DATA_CHANGE_ID.NEXTVAL INTO :NEW.CHANGEID FROM DUAL;
[解决办法]

引用:

sequence 不能这么用吧。
应该
SELECT DATA_CHANGE_ID.NEXTVAL INTO :NEW.CHANGEID FROM DUAL;

+1
[解决办法]
create or replace trigger DATAADD
before insert on DATA_CHANGE_RECORD
for each row
begin
new.CHANGEID := DATA_CHANGE_ID.nextval;
end;