oracle设置自动增长列

1.建表

create table VACATION

(

ID number(8) primary key,

TITLE VARCHAR2(200),

MATTER VARCHAR2(200),

APPLYER VARCHAR2(20),

STARTTIME VARCHAR2(20),

ENDTIME VARCHAR2(20)

)

2.建序列

create sequence vacation_seq minvalue 1 maxvalue 999999999999999999 start with 1 increment by 1 cache 20;



3.建触发器

CREATE OR REPLACE TRIGGER "vacation_trig"

BEFORE INSERT ON VACATION

REFERENCING OLD AS OLD NEW AS NEW FOR EACH ROW

DECLARE

BEGIN

SELECT vacation_seq.NEXTVAL INTO :NEW.id FROM DUAL;

END vacation_trig;

搞定！