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Conditional Running Total

Posted on 2013-05-13
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Last Modified: 2013-05-14
I have a crystal report where I am trying to do the following:

date              code             points calculated points      accum
04/26/13      TALP        0.5      0.5      0.5
04/29/13      TATD      1      1      1.5
04/30/13      TANN      0      5.5      7
05/01/13      TATD      1      1      8
05/02/13      TANN      0      1      9
05/03/13      TAUF      1      1      10
05/04/13      TALP             0.5      0.5      10.5

If the code is TANN, and the accumulated points are < 7, then the points to use for that TANN code are (7-accum), otherwise the points to use for the TANN code is 1.

It seems like I cannot have a running sum formula refer to itself.

Is there anyway to do this.  See attached example in an Excel file.
calcTANN.xls
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Question by:ndornack
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2 Comments
 
LVL 100

Accepted Solution

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mlmcc earned 500 total points
ID: 39163592
Sure with a manual running total

In the report header add a formula to declare the variables

WhilePrintingRecords;
Global NumberVar TotalPoints;
""

In the detail section add a formula where you want CalcPoints displayed
WhilePrintingRecords;
Global NumberVar TotalPoints;
Local NumberVar CalcPoints;

If {CodeField} = "TANN"  AND TotalPoints< 7 then
     CalcPoints := 7 - TotalPoints
Else If {CodeField} = "TANN" then
     CalcPoints := 1
Else
     CalcPoints := {PointsField};
TotalPoints:= TotalPoints+ CalcPoints;
CalcPoints

To display the new total points
EvaluateAfter({@CalcPoints});
WhilePrintingRecords;
Global NumberVar TotalPoints;
TotalPoints

mlmcc
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Author Closing Comment

by:ndornack
ID: 39166047
Works great!  Thanks.
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