建立一個序列:bash
CREATE SEQUENCE AUTO_SEQ INCREMENT BY 1 START WITH 1 NOMAXVALUE NOCYCLE;
建立一個觸發器,當對DEPARTMENTS表插入數據時觸發該觸發其自動累計插入數值到DEP_ID列ide
CREATE TRIGGER AUTO_INCREMENT BEFORE INSERT ON DEPARTMENTS FOR EACH ROW BEGIN SELECT AUTO_SEQ.NEXTVAL INTO:NEW.DEP_ID FROM DUAL; END;