Find max and second max salary for a employee table MySQL

Question

Suppose that you are given the following simple database table called Employee that has 2 columns named Employee ID and Salary:

  Employee
  Employee ID    S         


        

Answer 1

Find Max salary of an employee

SELECT MAX(Salary) FROM Employee

Find Second Highest Salary

SELECT MAX(Salary) FROM Employee 
Where Salary Not In (Select MAX(Salary) FROM Employee)

OR

SELECT  MAX(Salary) FROM Employee
WHERE Salary <> (SELECT MAX(Salary) FROM Employee )