Solved

Incorrect Sum in Access Query

Posted on 2006-07-04
4
304 Views
Last Modified: 2011-09-20

I have a simple query which I would like to sum the amount. The Select query (in SQL view) without the sum is:

SELECT Line_Items.IO, Line_Items.Amount, Line_Items.Date
FROM Line_Items
WHERE (((Line_Items.Date)=#4/3/2006#));

It gives these results:

Code      Amount      Date
1237540      -1126.02      2006-04-03
1237540      -2375      2006-04-03
1237540      -1885.5      2006-04-03
1237540      1126.02      2006-04-03
1237540      2375      2006-04-03
1237540      1885.5      2006-04-03
1728684      -1126.02      2006-04-03
1728684      -2375      2006-04-03
1728684      -1885.5      2006-04-03
1728684      2375      2006-04-03
1728684      1126.02      2006-04-03
1728684      1885.5      2006-04-03

I want to sum the amount, grouped by the Code.

The sql is:

SELECT Line_Items.IO, Sum(Line_Items.Amount) AS SumOfAmount, Line_Items.Date
FROM Line_Items
GROUP BY Line_Items.IO, Line_Items.Date
HAVING (((Line_Items.Date)=#4/3/2006#));

The results are:

IO      SumOfAmount      Date
1237540      0                                      2006-04-03
1728684      -4.54747350886464E-13      2006-04-03

As you can see, the sum for Code 1237540 is correct, while the sum for Code 1728684 is not correct, even though they contain identical amounts.

Why?
0
Comment
Question by:valkyri
  • 3
4 Comments
 
LVL 65

Accepted Solution

by:
rockiroads earned 125 total points
ID: 17037443
Would u be happy if the value was rounded?

SELECT Line_Items.IO, Round(Sum(Line_Items.Amount),2) AS SumOfAmount, Line_Items.Date
FROM Line_Items
GROUP BY Line_Items.IO, Line_Items.Date
HAVING (((Line_Items.Date)=#4/3/2006#));
0
 
LVL 65

Expert Comment

by:rockiroads
ID: 17037449
Access is expanding your double value, it does this, and because its greater than 15, it puts in the -13
This problem occurs with VBA coding as well, not sure how and why Access calculates to so many decimal places, probably due to length of datatype double
0
 

Author Comment

by:valkyri
ID: 17037474

I must be losing my mind, I've had this problem before. Oh well, thank you for reminding me.
0
 
LVL 65

Expert Comment

by:rockiroads
ID: 17037511
No probs
This issue annoys me also
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

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

This article is a continuation or rather an extension from Cascading Combos (http://www.experts-exchange.com/A_5949.html) and builds on examples developed in detail there. It should be understandable alone, but I recommend reading the previous artic…
Overview: This article:       (a) explains one principle method to cross-reference invoice items in Quickbooks®       (b) explores the reasons one might need to cross-reference invoice items       (c) provides a sample process for creating a M…
Familiarize people with the process of utilizing SQL Server stored procedures from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Micr…
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

820 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