Re: how to construct sql

On 6/2/2010 2:52 PM, Wes James wrote:
>
> **snip***
> Thx it is closer (with an end in the case):
>
> select
> case when MAX(page_count_count) - MIN(page_count_count)> 0 then
> MAX(page_count_count) - MIN(page_count_count)
> else
> MAX(page_count_count)
> end as day_max
> from page_count
> group by page_count_pdate order by page_count_pdate;
>
> the else puts out the total count on that day. I would need
> max(page_count_count) - max(page_count_count_of_previous_day)
>
> thx,
>
> -wes
>

A windowing query makes sense in this case which i'm not very good at

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