[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

Dsum problem

Posted on 2000-04-27
8
Medium Priority
?
640 Views
Last Modified: 2012-06-27
I'm creating a membership database and have problem about Dsum function. Well, i'm in the client form, but wanna know how much each client's paid so far. When i looked at the Sample Db from MSAccess ( Named Membership), i can use Dsum to get the sum from another table. This is the code from the sample
"=IIf(IsNull([MemberID]),0,DSum("[PaymentAmount]","Payments","[MemberID]=" & [MemberID]))"

So, i copied the code and paste it to my form, and changed from the [MemberID] to be [CaseID]. I also have "Payment" table, and "paymentAmount" field, The relationship is one to many. Unfortunately, i got the #error. Do u have any idea?

 
0
Comment
Question by:TerryOh
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 6

Expert Comment

by:bknouse
ID: 2755831
Try changing the name attribute of the control on the form (you find this in the properties OTHER tab).  If you originally had this named, Access gets confused and displays the #error instead of the value.

Brent
0
 
LVL 1

Expert Comment

by:JCE
ID: 2755851
If MemberId is a integer then I think your code should be like this.
=IIf(IsNull([MemberID]),0,DSum("[PaymentAmount]","Payments","[MemberID]=" & [MemberID] & ""))

If MemberId is text then it should be like this.
=IIf(IsNull([MemberID]),0,DSum("[PaymentAmount]","Payments","[MemberID]='" & [MemberID] & "'"))
Good luck
JCE
0
 

Author Comment

by:TerryOh
ID: 2756091
JCE, My MemberID is Texe, but when I tried the code that u told me, i got Blank field instead of #error. Why?
0
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

 
LVL 10

Expert Comment

by:paasky
ID: 2756399
Hello TerryOh,

You should add quotes or double quotes to criteria if you're comparing string (text) type fields:

=IIf(IsNull([MemberID]),0,DSum("[PaymentAmount]","Payments","[MemberID]='" & [MemberID] & "'"))

or

=IIf(IsNull([MemberID]),0,DSum("[PaymentAmount]","Payments","[MemberID]=" & Chr(34) & [MemberID] & Chr(34)))

chr(34) = "

Hope this helps,
Paasky

0
 
LVL 1

Accepted Solution

by:
JCE earned 80 total points
ID: 2756414
Try this first
=DSum("[PaymentAmount]","Payments","[MemberID]='" & [MemberID] & "'")
and next
=DSum("[PaymentAmount]","Payments","[MemberID]='abc'")
abc is your MemberID.
Let me know if it works.
JCE

0
 
LVL 10

Expert Comment

by:paasky
ID: 2756418
Oh oh! Sorry JCE, my intention was not to step on your toes.

Paasky
0
 
LVL 10

Expert Comment

by:paasky
ID: 2756467
Hmm.. I think the Iif is not necessary needed here, try this instead:

=DSum("[PaymentAmount]","Payments","[MemberID]='" & NZ([MemberID],"####") & "'")

Paasky



0
 

Author Comment

by:TerryOh
ID: 2756927
Hey, JCE, it works!!!!!

Thank you!!

JCE, paasky, and bknouse
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It’s the first day of March, the weather is starting to warm up and the excitement of the upcoming St. Patrick’s Day holiday can be felt throughout the world.
The Windows Phone Theme Colours is a tight, powerful, and well balanced palette. This tiny Access application makes it a snap to select and pick a value. And it doubles as an intro to implementing WithEvents, one of Access' hidden gems.
Learn how to number pages in an Access report over each group. Activate two pass printing by referencing the pages property: Add code to the Page Footers OnFormat event to capture the pages as there occur for each group. Use the pages property to …
In Microsoft Access, learn the trick to repeating sub-report headings at the top of each page. The problem with sub-reports and headings: Add a dummy group to the sub report using the expression =1: Set the “Repeat Section” property of the dummy…

649 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question