Free Lessons Courses Seminars TechHelp Fast Tips Templates Topic Index Forum ABCD

 Home   Courses   Index   Templates   Seminars   TechHelp   Forums   Help   Contact   Join   Order   Logon More... What's New? Popular Links ------------ Access Courses Access Index Access TechHelp Access Forum Access Troubleshooter Access Developer Network ------------ Excel Courses Excel Index ------------ Code Vault Testimonials Tip Jar Advice for Consultants

 Access    Excel    Word    Windows    HTML

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)

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 Tip

See this FREE Tip on DSUM.

Search