How do I remove repeated column values from report

Question

FROM THIS:

Hotel                     Type   Room Guest                                     From      To
    ------------------------- ------ ---- ----------         


        

Answer 1

How about using lag to access the previous row and check if it has the same value as the current one?

select decode(hotel,
              lag(hotel, 1, null) over (order by hotel, room, ...), null,
              hotel) as "Hotel"
  from ...