--通用sql select deptno, ename, sal from emp e1 where ( ) from emp e2 where e2.deptno=e1.deptno and e2.sal>=e1.sal ) /*这里的数值表示你想取前几名*/ order by deptno, sal desc; --oracle查询 select * from (select deptno,ename,sal,row_number() over (partition by deptno o…

创建表:Create table If Not Exists Employee (Id int, Name varchar(255), Salary int, DepartmentId int);Create table If Not Exists Department (Id int, Name varchar(255));Truncate table Employee;insert into Employee (Id, Name, Salary,DepartmentId) values ('…

题目 查询部门工资前三高的员工. 我用的数据库是oracle. 下面是数据表的信息. Employee表数据: | ID | NAME | Salary | DepartmentId | | -- | ---- | ------ | ------------ | |1 | Joe | 85000 | 1 | |2 | Henry | 80000 | 2 | |3 | Sam | 60000 | 2 | |4 | Max | 90000 | 1 | |5 | Janet | 69000 | 1 |…

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…

废话不多说,直接上脚本 CREATE TABLE [dbo].[Students]( ,) NOT NULL, ) NULL, ) NULL, [score] [int] NOT NULL, CONSTRAINT [PK_Students] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON…

Employee 表包含所有员工信息,每个员工有其对应的 Id, salary 和 department Id . +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Joe | 70000 | 1 | | 2 | Henry | 80000 | 2 | | 3 | Sam | 60000 | 2 | |…

185. 部门工资前三高的所有员工 LeetCode_MySql_185 题目描述 方法一:使用join on # Write your MySQL query statement below select d.Name as 'Department', e1.Name as 'Employee', Salary from Employee e1 join Department d on e1.DepartmentId = d.Id where 3 >( # 查找工资高于e1.Salary的个数…

Employee 表包含所有员工信息,每个员工有其对应的工号 Id,姓名 Name,工资 Salary 和部门编号 DepartmentId . +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | | | | | | | +----+-------+--------+--------------+ Departme…

最近发现一个网站 力扣 查看 上面有很多算法和数据库的题目,做了一下,发现自己平时都疏忽了,因此边做边记录下来 Employee 表包含所有员工信息,每个员工有其对应的 Id, salary 和 department Id. +----+-------+--------+--------------+ | Id | Name | Salary | DepartmentId | +----+-------+--------+--------------+ | 1 | Joe | 70000 | 1…

--语法形式: ROW_NUMBER() OVER(PARTITION BY COL1 ORDER BY COL2) --解释: 根据COL1分组,在分组内部根据 COL2排序,而此函数计算的值就表示每组内部排序后的顺序编号(组内连续的唯一的) --常用的使用场景: 取每个学科的前3名 --1.创建测试表 create table #score ( name varchar(20), subject varchar(20), score int ) --2.插入测试数据 insert into…