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88 lines
2.7 KiB
HTML
88 lines
2.7 KiB
HTML
<p>Table: <code>Employee</code></p>
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<pre>
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+--------------+---------+
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| Column Name | Type |
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+--------------+---------+
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| id | int |
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| name | varchar |
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| salary | int |
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| departmentId | int |
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+--------------+---------+
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id is the primary key column for this table.
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departmentId is a foreign key of the ID from the <code>Department </code>table.
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Each row of this table indicates the ID, name, and salary of an employee. It also contains the ID of their department.
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</pre>
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<p> </p>
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<p>Table: <code>Department</code></p>
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<pre>
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+-------------+---------+
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| Column Name | Type |
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+-------------+---------+
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| id | int |
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| name | varchar |
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+-------------+---------+
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id is the primary key column for this table.
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Each row of this table indicates the ID of a department and its name.
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</pre>
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<p> </p>
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<p>A company's executives are interested in seeing who earns the most money in each of the company's departments. A <strong>high earner</strong> in a department is an employee who has a salary in the <strong>top three unique</strong> salaries for that department.</p>
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<p>Write an SQL query to find the employees who are <strong>high earners</strong> in each of the departments.</p>
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<p>Return the result table <strong>in any order</strong>.</p>
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<p>The query result format is in the following example.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong>
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Employee table:
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+----+-------+--------+--------------+
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| id | name | salary | departmentId |
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+----+-------+--------+--------------+
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| 1 | Joe | 85000 | 1 |
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| 2 | Henry | 80000 | 2 |
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| 3 | Sam | 60000 | 2 |
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| 4 | Max | 90000 | 1 |
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| 5 | Janet | 69000 | 1 |
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| 6 | Randy | 85000 | 1 |
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| 7 | Will | 70000 | 1 |
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+----+-------+--------+--------------+
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Department table:
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+----+-------+
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| id | name |
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+----+-------+
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| 1 | IT |
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| 2 | Sales |
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+----+-------+
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<strong>Output:</strong>
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+------------+----------+--------+
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| Department | Employee | Salary |
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+------------+----------+--------+
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| IT | Max | 90000 |
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| IT | Joe | 85000 |
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| IT | Randy | 85000 |
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| IT | Will | 70000 |
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| Sales | Henry | 80000 |
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| Sales | Sam | 60000 |
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+------------+----------+--------+
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<strong>Explanation:</strong>
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In the IT department:
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- Max earns the highest unique salary
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- Both Randy and Joe earn the second-highest unique salary
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- Will earns the third-highest unique salary
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In the Sales department:
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- Henry earns the highest salary
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- Sam earns the second-highest salary
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- There is no third-highest salary as there are only two employees
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</pre>
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