Solved

Access query syntax - division by zero in aggregate function

Posted on 2014-02-25
3
826 Views
Last Modified: 2014-02-25
Dear experts -
hopefully an easy one.
I am calculate an average using the formula below - which works well, however i want to avoid division by zero, which is giving me a #Num! error for certain results.

Any suggestions?
Thanks!

TR_Reg: Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,[e].[billrate],0))/Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,1,0))

Open in new window

0
Comment
Question by:terpsichore
3 Comments
 
LVL 50

Accepted Solution

by:
Rgonzo1971 earned 500 total points
ID: 39885125
Hi,

Maybe

TR_Reg: Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,[e].[billrate],0))/IIF(Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,1,0))=0,null,Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,1,0)))

Open in new window

Regards
0
 
LVL 50

Expert Comment

by:Gustav Brock
ID: 39885126
This is one method, to first check if the sum is zero:

TR_Reg:
IIf(Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,1,0))=0, 0,
Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,[e].[billrate],0))/Sum(IIf([e].[billunit]=1 And [e].[volumeunit]=1 And [accounts].[regulatory]=True And [e].[action_ID]=38,1,0)))

/gustav
0
 

Author Closing Comment

by:terpsichore
ID: 39885144
This worked - thank you.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Preparing an email is something we should all take special care with – especially when the email is for somebody you may not know very well. The pressures of everyday working life stacked with a hectic office environment can make this a real challen…
Access developers frequently have requirements to interact with Excel (import from or output to) in their applications.  You might be able to accomplish this with the TransferSpreadsheet and OutputTo methods, but in this series of articles I will di…
In Microsoft Access, learn how to “cascade” or have the displayed data of one combo control depend upon what’s entered in another. Base the dependent combo on a query for its row source: Add a reference to the first combo on the form as criteria i…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

730 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