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-- Create sequence
create sequence INNERID
minvalue 1
maxvalue 99999999999999
start with 1
increment by 1
cache 20
order;
¡ô2.--INNERID.currval Ö¸µ±Ç°ÐòÁÐ
--INNERID.nextval Ö¸ÏÂÒ»¸öÐòÁÐ
insert into admin values (INNERID.nextval,'a');
insert into admin values (INNERID.nextval,'b');
insert into admin values (INNERID.nextval,'c');
insert into admin values (INNERID.nextval,'d');
create table admin
(id varchar2(20),name varchar2(10));
--²»¶ÏµÄ²åÈëÐòÁеÄÏÂÒ»¸öÖµ.
¡ô3.´´½¨´¥·¢Æ÷(×¢:´Ë´¦ÎÞ·¨ÉèÖÃidµÄĬÈÏֵΪINNERID.nextval )
CREATE OR REPLACE TRIGGER admin_tg
--admin id µÄ´¥·¢Æ÷
BEFORE INSERT ON admin FOR EACH ROW
BEGIN
SELECT INNERID.NEXTVAL INTO :NEW.id from DUAL;
END;
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insert into admin (username) values ( 'zdz');
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