获取employees中的行数据，且这些行也存在于emp_v中

create view emp_v as select * from employees where emp_no >10005;
CREATE TABLE `employees` (
`emp_no` int(11) NOT NULL,
`birth_date` date NOT NULL,
`first_name` varchar(14) NOT NULL,
`last_name` varchar(16) NOT NULL,
`gender` char(1) NOT NULL,
`hire_date` date NOT NULL,
PRIMARY KEY ( `emp_no` ));

select * from emp_v

select * from emp_v

select e.* from employees e,emp_v ev where e.emp_no = ev.emp_no