1)掌握多行函数与分组操作 2)掌握多表查询与子查询 3)理解集合查询与掌握Oracle分页语法 4)理解创建.修改和删除表和表约束 -------------------------------------------------------------------------------------准备篇 col empno for 9999;col ename for a10;col job for a10;col mgr for 9999; col hiredate for a12;co…