Re: sql comparison between records

[thomas@xxxxxxxxxxx]

Joel:

Since SQL is designed to handle sets of records, individual record operations 
often aren't appropriate for it. But can you clarify whether you actually need 
specific durations between records or you want to use those durations only to 
end up with an eventual average and the individual durations will then be 
discarded? The second alternative might be reasonably possible with SQL.

Tom Liotta

On Fri, 20 July 2001, Joel Fritz wrote:

> 
> How do you do this in SQL?
> 
> I have a file ordered by key value and a timestamp.  There are multiple
> records for each key value. I want to find the difference between time
> stamps of successive records and calculate the average difference for a key
> value group.  I know, it's easy in RPG.  I'm not trying to measure
> programmer productivity. <g>

-- 
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788
Fax  253-872-7904
http://www.400Security.com


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