Yes you can by using runsum()and dsum()
Here is an article that will walk you through the process
http://support.microsoft.com/?kbid=210338
ACC2000: Sample Function to Create a Running Sum on a Form
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This article was previously published under Q210338
Moderate: Requires basic macro, coding, and interoperability skills.
SUMMARY
This article shows you how to create a sample user-defined function to compute a running sum on a form.
MORE INFORMATION
One way to compute a running sum on a form is to use the DSum() function. For additional information about how to use the DSum() function to compute a running sum on a form, please see the following article in the Microsoft Knowledge Base:
210495 ACC2000: How to Use DSum to Create a Running Sum on a Form
Using the method demonstrated in this article has the following advantages over using the DSum() function:
The method demonstrated in this article does not require a sequential ID field. A required sequential ID field limits you to computing a running sum using a single ordering of your records.
Using the method demonstrated in this article is significantly faster than using the DSum() function to compute a running sum.
How to Create and Use the RunSum() Function
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http://support.microsoft.com/default...EN-US;CNTACTMS
NOTE: The sample code in this article uses Microsoft Data Access Objects. For this code to run properly, you must reference the Microsoft DAO 3.6 Object Library. To do so, click References on the Tools menu in the Visual Basic Editor, and make sure that the Microsoft DAO 3.6 Object Library check box is selected.
Open the sample database Northwind.mdb. Create a new module, and type the following line in the Declarations section if it is not already there:Option Explicit
Type the following code in the module:Function RunSum (F As Form, KeyName As String, KeyValue, _
FieldToSum As String)
'************************************************* **********
' FUNCTION: RunSum()
' PURPOSE: Compute a running sum on a form.
' PARAMETERS:
' F - The form containing the previous value to
' retrieve.
' KeyName - The name of the form's unique key field.
' KeyValue - The current record's key value.
' FieldToSum - The name of the field in the previous
' record containing the value to retrieve.
' RETURNS: A running sum of the field FieldToSum.
' EXAMPLE: =RunSum(Form,"ID",[ID],"Amount")
'************************************************* **********
Dim RS As DAO.Recordset
Dim Result
On Error GoTo Err_RunSum
' Get the form Recordset.
Set RS = F.RecordsetClone
' Find the current record.
Select Case RS.Fields(KeyName).Type
' Find using numeric data type key value?
Case DB_INTEGER, DB_LONG, DB_CURRENCY, _
DB_SINGLE, DB_DOUBLE, DB_BYTE
RS.FindFirst "[" & KeyName & "] = " & KeyValue
' Find using date data type key value?
Case DB_DATE
RS.FindFirst "[" & KeyName & "] = #" & KeyValue & "#"
' Find using text data type key value?
Case DB_TEXT
RS.FindFirst "[" & KeyName & "] = '" & KeyValue & "'"
Case Else
MsgBox "ERROR: Invalid key field data type!"
GoTo Bye_RunSum
End Select
' Compute the running sum.
Do Until RS.BOF
Result = Result + RS(FieldToSum)
' Move to the previous record.
RS.MovePrevious
Loop
Bye_RunSum:
RunSum = Result
Exit Function
Err_RunSum:
Resume Bye_RunSum
End Function
Create the following new query based on the Orders table and the Order Subtotals query. Save the query as qryOrders: Query: qryOrders
------------------------------------------------------
Type: select query
Join: Orders.[OrderID] <->; [Order Subtotals].[OrderID]
Field: OrderID
Table: Orders
Sort: Ascending
Field: Subtotal
Table: Order Subtotals
Use the Form Wizard to create a new form based on the qryOrders query. Include both fields on the form. On the next screen click Tabular.
Add a text box with the following properties to the new form: Name: RunningSum
ControlSource: =RunSum([Form],"OrderID",[OrderID],"Subtotal")
Format: Currency
Save the form and then view it in Form view.
Select different records using the record selector. Note that the RunningSum field shows an accumulated total based on the Subtotal field.
Running Sum
