题目描述

查找当前薪水(to_date='9999-01-01')排名第二多的员工编号emp_no、薪水salary、last_name以及first_name，不准使用order by

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`));

CREATE TABLE `salaries` (

`emp_no` int(11) NOT NULL,

`salary` int(11) NOT NULL,

`from_date` date NOT NULL,

`to_date` date NOT NULL,

PRIMARY KEY (`emp_no`,`from_date`));

输入描述:

无

输出描述:

emp_no	salary	last_name	first_name
10009	94409	Peac	Sumant

　　

 

1 select e.emp_no, max(s.salary) , e.last_name, e.first_name 2 from employees e, salaries s 3 where s.to_date = '9999-01-01' and e.emp_no = s.emp_no and s.salary <> 4 (select max(salary)5 from employees e, salaries s 6 where s.to_date = '9999-01-01' and e.emp_no = s.emp_no)