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72 lines
2.0 KiB
HTML
72 lines
2.0 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>Write an SQL query to find employees who have the highest salary in each of the departments.</p>
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<p>Return the result table in <strong>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 | 70000 | 1 |
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| 2 | Jim | 90000 | 1 |
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| 3 | Henry | 80000 | 2 |
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| 4 | Sam | 60000 | 2 |
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| 5 | Max | 90000 | 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 | Jim | 90000 |
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| Sales | Henry | 80000 |
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| IT | Max | 90000 |
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+------------+----------+--------+
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<strong>Explanation:</strong> Max and Jim both have the highest salary in the IT department and Henry has the highest salary in the Sales department.
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</pre>
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