AW: AW: Another SQL Question

["BirgittaHauser" <Hauser@xxxxxxxxxxxxxxx>]

Hi,

With Row_Number you won't get duplicates, i.e. each row gets ist own
counter.
With Dense_Rank you can have several first "places", several second "places"
etc.
As far as I have understood, he wanted to have the same number for all rows
with the same fiscal year, group and source code. That's why I used
Dense_Rank instead of Row_Number.
But there is an other OLAP ranking function, RANK().
Like DENSE_RANK duplicates are allowed, but if there are 2 first places, the
next counter will be 3.

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them?  Not training them
and keeping them!"

-----Ursprüngliche Nachricht-----
Von: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] Im Auftrag von Joe Pluta
Gesendet: Friday, May 02, 2008 18:27
An: Midrange Systems Technical Discussion
Betreff: Re: AW: Another SQL Question


BirgittaHauser wrote:
> Hi,
>
> If you are already on release V5R4, you may use the OLAP-Ranking 
> function DENSE_RANK.
>   
Birgitta, what's the difference in layman's terms between ROW_NUMBER and 
DENSE_RANK?