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VB Databases Basics Beginning-level VB coding questions specific to using VB with databases. Issues not specific to database use will be redirected to other forums.
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Old August 22nd, 2006, 12:43 PM
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Default Help: Running Sum (or Cumulative Sum)

I am writing a program in VB6 with ms Access database, and I use VB6 Report designer (without data environment). I need help on how to calculate cumulative sum (or running sum) of a field in the table for each record, and display the resulting sum as a column in the report.

example:
supplierName DateofSupply AmountSupplied
ABC PLC 10/11/2004 2000
Delight Inc. 04/02/2005 5000
Kings International 06/02/2005 1000
Logic Systems 09/02/2005 1500
Horizons Intl 16/02/2005 3000


The intended result should be as shown below:
supplierName DateofSupply AmountSupplied CumulativeSupply
ABC PLC 10/11/2004 2000 2000
Delight Inc. 04/02/2005 5000 6500
Kings International 06/02/2005 1000 7500
Logic Systems 09/02/2005 1500 9000
Horizons Intl 16/02/2005 3000 12000


Please can someone help me out with the code or a sample that does this task.
Thanks in advance.

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Old August 22nd, 2006, 03:12 PM
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In the OnFormat event of the report add the current record's value to a module-scope tallying variable, and then set the value of an unbound control to the new value.


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