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 ...

Answer 2

Is this the structure of the table that you are showing (or) is it the result of a report?

My guess is it is the result of a SQLPLUS report. If that is the case, and you want the Hotel name to appear once (until it changes), you can specify

Break on hotel;

Select hotel, type, room_guest
  from hotels
  order by hotel;

to achieve the desired result.

If it the structure, you cannot delete the column values for all but the first row. (in fact, there is nothing like the first row as far as the database is concerned). If you are trying to eliminate duplicate data, then look into normalizing your table.

http://en.wikipedia.org/wiki/Database_normalization\

Please post the table description and the tool (if any) so that you'd get the appropriate answers for your case.