SELECT every employee that has a higher salary than the AVERAGE of his department

Question

I have only 1 table named EMPLOYEE on my database with the 3 following collumns:

Employee_Name, Employee_Salary, Department_ID

Answer 1

you can try this way as well !

  select FirstName,E.DepartmentName,BaseRate,EB.avgSAL
  From DimEmployee E
  inner join
  (select avg(BaseRate) As avgSAL,DepartmentName
  from DimEmployee
  group by DepartmentName ) EB
  ON E.DepartmentName = Eb.DepartmentName
  where E.BaseRate > Eb.avgSAL