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xuthus / 数据库SQL实战SQLMIT

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2.查找入职员工时间排名倒数第三的员工所有信息.md 635 Bytes
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xuthus authored 2019-08-13 08:38 . revise:content revision

查找入职员工时间排名倒数第三的员工所有信息

题目描述

查找入职员工时间排名倒数第三的员工的所有信息

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`));

答案

select * from employees where hire_date = (select distinct hire_date from employees order by hire_date desc limit 2,1)

题解

与第一题一样,区别在于需要进行去重和排序后获得排名信息。

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