Construct a SQL Query

Hi there! I need help with constructing a sql query. Currently the query is: select ID, description, price, date from table where Datum >= DateAdd("n",-3,getdate()) Which returns ID | Description | Price | Date I also return how many days left, hours left , minutes left using datediff. Like this: ID | Description | Price | Date | DaysLeft | HoursLeft | MinutesLeft This should be supereasy for someone with good SQL-knowledge.