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Crystal Reports Running Total in a Formula

Posted on 2009-03-30
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Last Modified: 2012-06-21
Looking to find out how to write a formula that will calculate the running total of a field and reset on change of a group
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Question by:nemesis1210
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9 Comments
 
LVL 6

Expert Comment

by:RPCIT
ID: 24022392
You shouldn't actually have to use a formula unless you want to get fancy. (which sometimes happens)

You can use a RunningTotalField (should show up in your fields list, right click and hit new) .

The running total field allows you to change when you want to evaluate, and when you want to reset.
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LVL 2

Author Comment

by:nemesis1210
ID: 24022613
unfortunatly I need to get fancy, I need to be able to run a calculation on two existing running totals and am unable to do so, so I am hoping to be able to create formulas for these as opposed to running total fields so I can perform my calculation.

Thanks anyhow
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LVL 6

Expert Comment

by:RPCIT
ID: 24022757
You can manually create runnign totals, or "fancy" formulas by adding formula fields to the sections you want..

you could put the reset field in the group header, the increment field in the detail, and the display in the footer.

using something like this in the code:

//begin increase value;
WhilePrintingRecords;
numberVar SomeVal;
SomeVal := SomeVal + {tablName.FieldName}
//end
 
//begin reset value;
WhilePrintingRecords;
numberVar SomeVal;
SomeVal := 0;
//end
 
//begin display value;
numberVar SomeVal;
SomeVal
//end

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LVL 6

Expert Comment

by:RPCIT
ID: 24022768
missing semi-colon (;) on line 4
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Author Comment

by:nemesis1210
ID: 24022952
almost there, values increase during the detail and reset at each group, however display is always zero in the footer
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LVL 6

Accepted Solution

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RPCIT earned 500 total points
ID: 24022958
try adding whileprintingrecords; at the top of the display formula
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LVL 2

Author Comment

by:nemesis1210
ID: 24023085
Perfect thank you
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LVL 2

Author Closing Comment

by:nemesis1210
ID: 31564497
Worked like a champ
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LVL 6

Expert Comment

by:RPCIT
ID: 24023842
You welcome :)
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