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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     Explaining a COMPUTE

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andrew w
Member
posted
Hello all,

Just wondering whether anyone has attempted to explain what COMPUTE does to a "layperson".

While I understand what a COMPUTE does and when to use it, I find myself having to explain COMPUTE by example rather than a simple statement. The manual's definition is good (ie what is the difference between a DEFINE and a COMPUTE), but it is still a little daunting for some.

Any ideas would be appreciated.

Thanks in advance

Andrew W
 
Posts: 27 | Location: Sydney, Australia | Registered: May 27, 2003Report This Post
susannah
Expert
posted Hide Post
A Define works on each individual record.
A Compute works on the aggregations you make in your program.
You allright now?
 
Posts: 3811 | Location: Manhattan | Registered: October 28, 2003Report This Post
Leah
Virtuoso
posted Hide Post
A define is performed on each record as it is input to the TABLE request. The compute is performed after the TABLE request processes the selection criteria and any sorting, you can do a compute without sorting; the computed field is part of the output of the TABLE request, a defined field is only present in the ouput if included in the SUM/PRINT/WRITE variable list.
 
Posts: 1317 | Location: Council Bluffs, IA | Registered: May 24, 2004Report This Post
Tony A
Expert
posted Hide Post
A Define is applied to the data coming in
A Compute is applied to the data going out

There is a bit more to it of course, but I have found the above to be a good start for newbies.
 
Posts: 5694 | Location: United Kingdom | Registered: April 08, 2004Report This Post
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