--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 ('
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
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
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
目录(?)[-] 三动态SQL语句 selectKey 标签 if标签 if where 的条件判断 if set 的更新语句 if trim代替whereset标签 trim代替set choose when otherwise foreach 参数为array示例的写法 参数为list示例的写法 三.动态SQL语句 MyBatis学习 之 一.MyBatis简介与配置MyBatis+Spring+MySql MyBatis学习 之 二.SQL语句映射文件(1)resultMap MyBa