Re: Rank

Am 04.05.2004 18:47 schrieb Rob:

> Martin Knipper wrote:
>>Am 04.05.2004 16:11 schrieb george young:
>>>On Sun, 2 May 2004 02:22:37 +0800
>>>"Muhyiddin A.M Hayat" <middink@indo.net.id> threw this fish to the penguins:
>>>
>>>>I Have below table
>>>>
>>>>id | site_name | point
>>>>----+-----------+-------
>>>>1 | Site A    |    40
>>>>2 | Site B    |    90
>>>>3 | Site D    |    22
>>>>4 | Site X    |    98
>>>>
>>>>Would like to calc that Rank for each site, and look like
>>>>
>>>>id | site_name | point | rank
>>>>----+-----------+-------+------
>>>>1 | Site A    |    40 |    3
>>>>2 | Site B    |    90 |    2
>>>>3 | Site D    |    22 |    4
>>>>4 | Site X    |    98 |    1
>>>
>>>

[...]

>>
>>Another possibilty is to use a sequence:
>>
>>demo=# create temporary sequence ranking;
>>demo=# select *,nextval('ranking') as rank from yourTable order by
>>site_name asc;
>>
> 
> wouldn't it have to be:
> 
> select *, nextval('ranking') as rank
>    from yourTable
>   order by point desc;
> 
> for the ranking to work?
> 

Yes, you are right.
I guess I was a little confused with the ordering in the example
table Muhyiddin provided.

Greetings,
Martin

-- 
Martin Knipper
www  : http://www.mk-os.de
Mail : knipper@mk-os.de