废话不多讲，直接上代码

//1.创建表

Create Table testZcm(       Id Number(2) Not Null Primary Key,       postCode Number(6) Default ‘0‘ Not Null,       areaName Varchar2(20) Default ‘‘ Not Null)//2.创建自动增长序列Create Sequence zcmSequence Minvalue 1 Increment By 1 Start With 1;//3.创建触发器Create Trigger test_seq Before       Insert On testZcm For Each Row When (new.id Is Null)Begin  Select zcmSequence.Nextval Into :new.id From dual;End;//4.测试Insert Into testzcm (postCode,Areaname)Values(3333,‘b‘);Insert Into testzcm (postCode,Areaname)Values(234,‘qb‘);Insert Into testzcm (postCode,Areaname)Values(345,‘yu‘);Select * From testzcm————————————————版权声明：本文为CSDN博主「朝明_张」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。原文链接：https://blog.csdn.net/zhangchaoming123/article/details/51604607