SQL Question and Answers PDF

SQL Question and Answers PDF 1. Question: Retrieve all records from a table named Employees Answer: SELECT * FROM Employees;

2. Question: Retrieve the names of employees whose salary is greater than $50,000 from the Employees table.

Answer: SELECT Name FROM Employees WHERE Salary > 50000;

3. Question: Retrieve the total number of employees in each department from the Employees table.

Answer: SELECT Department, COUNT(*) AS Total_Employees FROM Employees GROUP BY Department;

4. Question: Update the salary of an employee with ID 101 to $60,000 in the Employees table.

Answer: UPDATE Employees SET Salary = 60000 WHERE ID = 101;

5. Question: Delete all employees from the Employees table who have resigned (status is 'Resigned')?

Answer: DELETE FROM Employees WHERE Status = 'Resigned';

6. Question: Retrieve the highest salary from the Employees table.

Answer: SELECT MAX(Salary) AS Highest_Salary

FROM Employees;

7. Question: Retrieve the second highest salary from the Employees table.

Answer: SELECT MAX(Salary) AS SecondHighestSalary FROM Employees WHERE Salary < (SELECT MAX(Salary) FROM Employees);

8. Question: Find employees whose names start with the letter 'A' from the Employees table.

Answer: SELECT * FROM Employees WHERE Name LIKE 'A%';

9. Question: Retrieve the average salary of employees in the Sales department from the Employees table.

Answer: SELECT AVG(Salary) AS AverageSalary FROM Employees WHERE Department = 'Sales';

10. Question: Retrieve the employees with the highest salary in each department from the Employees table.

Answer: SELECT Department, MAX(Salary) AS HighestSalary FROM Employees GROUP BY Department;

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