好多这方面贴子,自已查查吧 CREATE SEQUENCE USERID INCREMENT BY 1 START WITH 1 MAXVALUE 1.0E28 MINVALUE 1 NOCYCLE NOCACHE NOORDER; CREATE OR REPLACE TRIGGER USERADD BEFORE INSERT ON MEMBERRG FOR EACH ROW BEGIN SELECT LPAD(USERID.NEXTVAL,4,'0') INTO :NEW.NUM FROM DUAL; END;
CREATE SEQUENCE USERID INCREMENT BY 1 START WITH 1
MAXVALUE 1.0E28 MINVALUE 1 NOCYCLE
NOCACHE NOORDER;
CREATE OR REPLACE TRIGGER USERADD
BEFORE INSERT ON MEMBERRG
FOR EACH ROW
BEGIN
SELECT LPAD(USERID.NEXTVAL,4,'0') INTO :NEW.NUM FROM DUAL;
END;