数据库语句，建表，增加数据，查询数据

create table student (
  id number(10,0) not null,
  uname varchar2(255 char),
  pword varchar2(255 char),
  primary key (id)
);
insert into student values(1,'张三','qweerwe');
insert into student values(2,'李四','asdff');
insert into student values(4,'王五7','ry123');

select * from student;