Difference between dates - power query

Hi camargos88 ,

At the moment I have a direct query to a table in SQL Server. I would like to make this change in Power query without any change to the table in the db.

I have recreated this in the Adventure works and this is the query generated. WHere do you reckon I need to change?

let
    Source = Sql.Database("******", "AdventureWorks2012"),
    HumanResources_Employee = Source{[Schema="HumanResources",Item="Employee"]}[Data],
    #"Removed Columns" = Table.RemoveColumns(HumanResources_Employee,{"Person.Person", "Production.Document", "Purchasing.PurchaseOrderHeader", "Sales.SalesPerson"}),
    #"Sorted Rows" = Table.Sort(#"Removed Columns",{{"BirthDate", Order.Ascending}})
in
    #"Sorted Rows"