Re: Getting delta info from totals

From: phil (pfreedenberg_at_hotmail.com)
Date: 06/15/04 

Date: Tue, 15 Jun 2004 17:48:56 +0000 (UTC)

On 15 Jun 2004, Greg Heath wrote:
>help diff
>
>Hope this helps.
>
>Greg
>
>"Joe Nellis" <joenellis2003@yahoo.com> wrote in message
>news://10cmkcrt1ee7h47@corp.supernews.com...
>> Suppose I get daily, a total, that is the total number of widgets sold in
>> the past 30 days. Each day I get a new total of the past 30 days
>activity.
>> I want to know if I can determine the change in widgets sold from the
>> previous day. That is, the number of sales for just that day and not the
>> last 30 days. I have no starting point of any particular day's sales to
>> determine other days sales. I am wondering if I have mroe than 30 days
>> worth of data if it is possible to ween daily sales data.
>>
>> Thanks,
>> Joe
>>
>> sample data:
>> day23 450 widgets
>> day24 460 widgets
>> day25 445 widgets
>> ...
>> ...
>> day52 480 widgets
>> day53 460
>> day54 475
>> day55 459
>>
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When the daily sales are summed for 30 days and reported, the
reported data contains less information than the raw daily data.
The act of summing destroys information.

phil