Re: Dense_Rank Revisited

[Charles Wilt <charles.wilt@xxxxxxxxx>]

DENSE_RANK() OVER(PARTITION BY DTE2, ORDER BY DTE2, DTE1)

Should do the trick I think...sorry I've already wiped out the test
table I created :)

Charles

On Tue, Mar 8, 2011 at 3:43 PM, Pete Helgren <pete@xxxxxxxxxx> wrote:
> It looked like dense_rank did the trick with my sample data but when I
> had a larger data set I ran into a snag that may not have been apparent
> in the example I presented.  Here is a slightly different variation that
> describes the remaining issue.
>
> BB8179      04/17/11     04/02/11
> BE7214      04/17/11     04/02/11
> BE7488      04/18/11     04/02/11
> BE2178      04/18/11     04/02/11
> BE1618      04/18/11     04/02/11
> BD9608      04/21/11     04/02/11
> BE2180      04/21/11     04/02/11
> BE1696      04/21/11     04/02/11
> BD9607      05/7/11      05/28/11
> BB6382      05/7/11      05/28/11
> BB7942      05/10/11     05/28/11
> BE7487      05/10/11     05/28/11
> BE7489      05/11/11     05/28/11
> BE2179      05/11/11     05/28/11
> BE8955      05/11/11     05/28/11
>
>
> What I would like to do is count the unique occurrences of the first
> date column within the *same* occurrence of the second date column.
> Something like:
>
> BB8179      04/17/11  1   04/02/11
> BE7214      04/17/11  1   04/02/11
> BE7488      04/18/11  2   04/02/11
> BE2178      04/18/11  2   04/02/11
> BE1618      04/18/11  2   04/02/11
> BD9608      04/21/11  3   04/02/11
> BE2180      04/21/11  3   04/02/11
> BE1696      04/21/11  3   04/02/11
> BD9607      05/7/11   1   05/28/11
> BB6382      05/7/11   1   05/28/11
> BB7942      05/10/11  2   05/28/11
> BE7487      05/10/11  2   05/28/11
> BE7489      05/11/11  3   05/28/11
> BE2179      05/11/11  3   05/28/11
> BE8955      05/11/11  3   05/28/11
>
>
> I tried adding the second column to the order by clause but that seemed
> to make no difference.  I also tried 'partition' by using the second
> column but that also didn't deliver the desired result.  Ideas?
>
> --
> Pete Helgren
> Value Added Software, Inc
> www.asaap.com
> www.opensource4i.com
>
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