Question

I have a problem in SQL Server 2005:

Suppose I have the table PLAYER (string player, int score, bool Active) and the this query :

SELECT PLAYER.player AS NAME,
   PLAYER.score AS SCORE,
   POSITION = CASE WHEN PLAYER.Active THEN RANK()OVER(ORDER BY score desc) else NULL end
from PLAYER

The problem is that when the player is not active, the positions generated are not consecutive.

For example :

JOHN,10000,1
PETER,5000,NULL (NOT ACTIVE)
CHARLES,2500,3 (SHOULD HAVE POSITION 2, NOT 3)

Sorry for my terrible English, I hope I have explained my point

Answer 1

declare @Player table
(
  player varchar(20),
  score int,
  state int
)

insert into @Player values ('JOHN', 10000, 1)
insert into @Player values ('PETER', 5000, NULL)
insert into @Player values ('PAUL', 5000, 2)
insert into @Player values ('CHARLES', 2500, 1)

select player as Name,
       score,
       case
          when state = 1 then
            rank() over(partition by state order by score desc)
          else null
       end as position
from @Player     

Result:

Name                 score       position
-------------------- ----------- --------------------
PETER                5000        NULL
JOHN                 10000       1
CHARLES              2500        2
PAUL                 5000        NULL