牛客SQL题解-获取所有非manager员工当前的薪水情况

题目描述

获取所有非manager员工当前的薪水情况，给出dept_no、emp_no以及salary ，当前表示to_date='9999-01-01'
CREATE TABLE `dept_emp` (
`emp_no` int(11) NOT NULL,
`dept_no` char(4) NOT NULL,
`from_date` date NOT NULL,
`to_date` date NOT NULL,
PRIMARY KEY (`emp_no`,`dept_no`));
CREATE TABLE `dept_manager` (
`dept_no` char(4) NOT NULL,
`emp_no` int(11) NOT NULL,
`from_date` date NOT NULL,
`to_date` date NOT NULL,
PRIMARY KEY (`emp_no`,`dept_no`));
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:

dept_no	emp_no	salary
d001	10001	88958
d004	10003	43311
d005	10007	88070
d006	10009	95409

 

 

 

 

 

 

 

 

答案详解

select de.dept_no,de.emp_no,s.salary
    from employees e 
        inner join dept_emp de on de.emp_no=e.emp_no
        inner join salaries s on e.emp_no=s.emp_no
    where s.to_date='9999-01-01'
        and de.to_date='9999-01-01'
        and s.emp_no not in(
            select emp_no
            from dept_manager
            where to_date='9999-01-01'
        )