Consider the table Employee given below: EmpId EmpName Salary DeptId200 Alex 30000 100201 Tom 20000 101202 Dick 40000 100202 Harry 15000 102205 Mary 50000 101206 Karl 40000 101SELECT EmpName FROM Employee WHERE Salary > ALL (SELECT Salary FROM Employee WHERE DeptId = 100);What will be the outcome of the query given above?
Question
Consider the table Employee given below: EmpId EmpName Salary DeptId200 Alex 30000 100201 Tom 20000 101202 Dick 40000 100202 Harry 15000 102205 Mary 50000 101206 Karl 40000 101SELECT EmpName FROM Employee WHERE Salary > ALL (SELECT Salary FROM Employee WHERE DeptId = 100);What will be the outcome of the query given above?
Solution
The SQL query you provided is looking for the names of employees who have a salary greater than all the employees in department 100.
Here's how it works:
-
The subquery
(SELECT Salary FROM Employee WHERE DeptId = 100)returns the salaries of all employees in department 100. -
The main query
SELECT EmpName FROM Employee WHERE Salary > ALL (subquery)then compares the salary of each employee in the Employee table to the salaries returned by the subquery. If an employee's salary is greater than all the salaries in the subquery, their name is returned.
Without the actual data, I can't provide the exact outcome. However, the result will be the names of employees who earn more than the highest salary in department 100. If no such employees exist, the query will return an empty set.
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