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  • 【SQL】185. Department Top Three Salaries

    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  | 1            |
    | 2  | Henry | 80000  | 2            |
    | 3  | Sam   | 60000  | 2            |
    | 4  | Max   | 90000  | 1            |
    | 5  | Janet | 69000  | 1            |
    | 6  | Randy | 85000  | 1            |
    +----+-------+--------+--------------+
    

    The Department table holds all departments of the company.

    +----+----------+
    | Id | Name     |
    +----+----------+
    | 1  | IT       |
    | 2  | Sales    |
    +----+----------+
    

    Write a SQL query to find employees who earn the top three salaries in each of the department. For the above tables, your SQL query should return the following rows.

     1 # Write your MySQL query statement below
     2 select d.Name as Department,e.Name as Employee,e.Salary
     3 from Department d,Employee e
     4 where d.Id=e.DepartmentId
     5 and 3>(
     6        select count(distinct Salary)
     7        from Employee
     8        where Salary>e.Salary
     9        and DepartmentId = e.DepartmentId
    10     );
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  • 原文地址:https://www.cnblogs.com/fcyworld/p/6498858.html
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