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MS Access

DSum

Using the DSUM Function

In this tutorial you will learn how to use the DSUM Function.

Take an example Table of Customers.

CustomerT
CustomerIDFirstNameLastNamePhoneCustomerSinceCreditLimitDaysGraceIsActive
1RichardRost716555777701/01/201210011True
2JoeSmith716555343401/03/19905005True
3SuzanJones562436514602/01/199815002False
4AlanWatson419389121217/05/2012503True
5AnnaPicore71323647905/05/200510204True
6RonaldSimms780746546804/04/1992502True
7DonaldBarker416441555501/03/19982505True
8BennySperduti716726726206/04/199916007False
9PeteSmith564559777704/04/20005003False
10BarbraPeters829282728831/12/2005501True
11JoeJones549546546601/06/20045003True
14PezzDispo26/09/201204True
16BobSmith04/10/201209True

For this example we wish to total or return the Sum (Σ) of CreditLimit but only if the Customer is Active.

The DSUM function returns the sum from a specified set of records (or domain).

=DSUM(Field, Domain, Criteria)

DSUM - Function Engine

The answer being $3,421.00.

Query

The results using a Query would be

	SELECT Sum(CreditLimit) AS SumOfCreditLimit FROM CustomerT GROUP BY IsActive HAVING IsActive=True;
	

FORM

In a Form you could set the Default Value of a Textbox to

	=DSUM("CreditLimit", "CustomerT", "IsActive=TRUE")
	
VBA

In a Form add a TEXTBOX control and rename it "txtDSum", then you could add the following in the Load Event.

	Private Sub Form_Load()
		txtDSum = DSum("CreditLimit", "CustomerT", "IsActive=TRUE")
	End Sub
	

Courses

Access 2003 Access 310

Access 2013 Access Expert 11

Tip

See this FREE Tip on DSUM.

Search

You can find more about this by searching the website.


Alex Hedley (Avatar) By: Alex Hedley


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