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Old March 15th, 2005, 06:05 AM
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Default Auto Calculated Field in Access

hi to all,

I want to create an auto calculated field in my Access DB as follows


OpeningBalance And Installment are two other fields in my table.
How do i set the default value in the ClosingBalance field based on this formula?

Anubhav Kumar
Anubhav Kumar
Old March 15th, 2005, 08:37 AM
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   The rule of thumb is that you don't store calculated fields in a table, only in a query, or on a form or report. Since the values are calculated dynamically, there is no need to store the data.

   That said, to put this in a query, you would create a query with the table in it, and then use this formula in the query Field: box

ClosingBalance:([OpeningBalance] + [Installment])

   To put this in a form or report, create an unbound text box, and then put this formula in the text box in design view:

=Sum([OpeningBalance] + [Installment])

Form I think would be:
=Sum(Me.OpeningBalance + Me.Installment)

   I would have to play around with that syntax to make sure it was right for the Form.

   I am not sure why you would want to set a default value on your closing balance, since it would be calculated in the query. But to do that in a table, you open the table designer, select the field, and put in a Default Value:



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