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xuthus / 数据库SQL实战SQLMIT

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1.查找最晚入职员工的所有信息.md 639 Bytes
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xuthus authored 2019-08-13 08:38 . revise:content revision

查找最晚入职员工的所有信息

题目描述

查找最晚入职员工的所有信息

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 max(hire_date) from employees);

题解

由于date数据类型只能精确到天,即可能在最晚的当天存在一个或多个数据,该题使用limit无法获取所有的最晚当天入职的员工信息。

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