oracle入门 学习笔记

show parameter db_name;

create user iweb identified by iweb;

grant connect to iweb;

grant resource to iweb;

create table student(sno int not null,sname char(10),age int,sex int);

insert into student values(20130201,'张明',21,1);

create table book(bid int not null,bname varchar2(20) not null,author varchar2(20),publicCompany varchar2(50),publictime date,type int,price number(6,2));

insert into book values(101,'我的祖国啊','刘清华','人民出版社',to_date('2003-03-16','yyyy-mm-dd'),1,'39.50');

alter table book add remark varchar2(255);

create table borrowinfo(sno int,bid int,borrowtime date,returntime date,status int,remark varchar2(255));

insert into borrowinfo values(20130205,'101',to_date('2002-06-16 09:51:05','yyyy-mm-dd hh24:mi:ss'),to_date('2002-06-16 09:51:05','yyyy-mm-dd hh24:mi:ss'),1,null);

select sysdate from dual;

drop table users;

create sequence s_id minvalue 1 maxvalue 99999 start with 1 increment by 1;

create table users(id int not null primary key,uname varchar2(10),upassword varchar2(12) not null);

insert into users values(S_id.Nextval,'张明','zm1234');
commit;

insert into users values(S_id.Nextval,'程浩 ','ch1234');
commit;