POJ1025 是一道模拟题. 这题第一个障碍是现在少见的循环电梯 ('pater-noster' elevator) ”The building has `pater-noster' elevator, i.e. elevator build up from several cabins running all around.“ 这种叫做‘paster-noster‘的电梯是running all around的,如动画所示,题目中费解的地方便清楚了.(欲知详情,请往维基百科) 第二个难点:模…

The Employee table holds all employees. Every employee has an Id, and there is also a column for the department Id. +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Joe | 70000…

The Employee table holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id. +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Jo…

这些个词没有太大区别,有时候有些词是可以通用的,而有些用法则是随着地域时间的不同而变迁. 一般说来,college译作“学院”,它是university (综合性大学)的一个组成部分,例如,一所综合大学里设有文学院.理学院.医学院等,故university往往是由多所较小的college合并而成.值得注意的是,在英国,大学称为university,而在美国大学称为college:有些规模较小的大学也可称之为junior college(大专). “学院”对应的英文词很多,除了college之外,…

一.Nth Highest Salary Write a SQL query to get the nth highest salary from the Employee table. +----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+ For example, given the above Employee table, the nth hig…

很久以前准备写的系列文章,后来因为懒一直耽搁着,今天突然决定继续下去,于是有了这篇文章,很基础,但很常用.题目描述依然拷贝.简单来说就是找出个个部门薪水排名第二的人,排名相同的要一起列出来. Introduction The challenge is to find the employees with the second highest salary in each department. However, it is a little more complicated because if…

<hibernate-mapping package="com.itcast.f_hbm_oneToMany"> <class name="Department" table="department"> <!--generator主键生成策略 --> <id name="id"> <generator class="native" /> </…

The Employee table holds all employees. Every employee has an Id, and there is also a column for the department Id. +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Joe | 70000…

The Employee table holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id. +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Jo…

SQL 架构 Create table If Not Exists Employee (Id ), Salary int, DepartmentId int) Create table If Not Exists Department (Id )) Truncate table Employee insert into Employee (Id, Name, Salary, DepartmentId) values (') insert into Employee (Id, Name, Sala…