我正在创建一个触发器并收到一些错误,我无法理解。请任何人都可以帮助我。
create or REPLACE TRIGGER trig_data
BEFORE INSERT
ON data_db REFERENCING OLD AS OLD AND NEW AS NEW
FOR EACH ROW
BEGIN
SELECT RAHUL_SEQUENCE.NEXTVAL INTO :NEW.USERID FROM DUAL;
END;
Error report:
ORA-04079: invalid trigger specification
04079. 00000 - "invalid trigger specification"
*Cause: The create TRIGGER statement is invalid.
*Action: Check the statement for correct syntax.