oracle创建id自增及相关增删改查操作

新建下载权限记录表   DOWNLOADPOPE_TAB  

字段：id、用户id、有下载权限的下载中心分类表id、有上传权限的下载中心分类表id 

ID（int）、userid（int）、downid（string）、upid（string） 

执行语句 
//1创建 
CREATE TABLE DOWNLOADPOPE_TAB 
( 
    ID  INT NOT NULL, 
    USERID  INT NOT NULL, 
    DOWNID  VARCHAR(60), 
    UPID VARCHAR(60), 
    CONSTRAINT DOWNLOADPOPE_TAB PRIMARY KEY (ID) 
); 
//2创建自动增长序列 
CREATE SEQUENCE DOWNLOADPOPE_TAB_Sequence 
INCREMENT BY 1    
START WITH 1   
NOMAXVALUE       
NOCYCLE 
CACHE 10; 
//3创建触发器 
CREATE TRIGGER DOWNLOADPOPE_TAB BEFORE 
insert ON  DOWNLOADPOPE_TAB FOR EACH ROW 
begin 
select DOWNLOADPOPE_TAB_Sequence.nextval into:New.id from dual; 

end; 
//4.提交 
commit; 
//5.插入 
INSERT INTO DOWNLOADPOPE_TAB(userid,downid,upid)VALUES(100123,'oracle sql','54.70');
 //6.查询 
select * from jxpost.DOWNLOADPOPE_TAB 
//7.删除数据 
DELETE DOWNLOADPOPE_TAB where id=1 
//8.删除表 
DROP TABLE  DOWNLOADPOPE_TAB