Solved

Calculating monthly averages

Posted on 2015-02-10
4
93 Views
Last Modified: 2015-02-18
Hello,

I've written the following code that displays the daily difference between two dates of the NE_Percent_Avail_Daily field via this portion of the code.  I'm now trying to figure out how to display the average of all the values of the NE_Percent_Daily field for each month and display that value in the first entry for that month in a calculated field.  The number of entries in a month can vary.

[NE_Percent_Avail_Daily]-(select NE_Percent_Avail_Daily from SummaryTable where NE_Entry_Date =
(select max(NE_Entry_Date) from SummaryTable where NE_Entry_Date < S.NE_Entry_Date)) AS NEDailyChange,

SELECT S.NE_Entry_Date, S.NE_Items, S.NE_Items_Avail, S.NE_Percent_Avail_Daily, [NE_Percent_Avail_Daily]-(select NE_Percent_Avail_Daily from SummaryTable where NE_Entry_Date =
(select max(NE_Entry_Date) from SummaryTable where NE_Entry_Date < S.NE_Entry_Date)) AS NEDailyChange, S.NE_Percent_Avail_MTD, S.NE_Monthly_Change, S.NE_Percent_Avail_Yearly, S.NE_YTD_Change, S.ColumnSpace1, S.LTN_Entry_Date, S.LTN_NE_ITEMS, S.LTN_Avail, S.LTN_Percent_Avail_Daily, [LTN_Percent_Avail_Daily]-(select LTN_Percent_Avail_Daily from SummaryTable where LTN_Entry_Date =
(select max(LTN_Entry_Date) from SummaryTable where LTN_Entry_Date < S.LTN_Entry_Date)) AS LTNDaily_Change, S.LTN_Percent_Avail_MTD, S.LTN_Monthly_Change, S.LTN_Percent_Avail_YTD, S.LTN_YTD_Change, S.ColumnSpace2, S.QRO_Entry_Date, S.QRO_Items, S.QRO_Avail, S.QRO_Percent_Avail_Daily, [QRO_Percent_Avail_Daily]-(select QRO_Percent_Avail_Daily from SummaryTable where QRO_Entry_Date =
(select max(QRO_Entry_Date) from SummaryTable where QRO_Entry_Date < S.QRO_Entry_Date)) AS QRODaily_Change, S.QRO_Percent_Avail_MTD, S.QRO_Monthly_Change, S.QRO_Percent_Avail_YTD, S.QRO_YTD
FROM SummaryTable AS S
ORDER BY S.NE_Entry_Date;

Open in new window

0
Comment
Question by:chtullu135
  • 2
4 Comments
 
LVL 47

Expert Comment

by:Dale Fye (Access MVP)
ID: 40602109
Are you saying that you want a running average, which would give you the average of the previous X (maybe 30) days for every date in a sequence?  Or that you simply want the 12 monthly averages?

Can you provide an example of what the output would look like?
0
 
LVL 49

Accepted Solution

by:
Gustav Brock earned 500 total points
ID: 40603765
You can use an expression like:

MonthAverage: IIf(Day(S.NE_Entry_Date)>1, Null, DAvg("YourAmountField","YourQuery","YourDateCriteria"))

/gustav
0
 

Author Closing Comment

by:chtullu135
ID: 40618110
Thanks Gustav.  I 'm sorry for the delay in replying but for some reasons, I can't post my replies from my computer at work and my closing of questions did not go through.
0
 
LVL 49

Expert Comment

by:Gustav Brock
ID: 40618260
You are welcome!

/gustav
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

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…
The first two articles in this short series — Using a Criteria Form to Filter Records (http://www.experts-exchange.com/A_6069.html) and Building a Custom Filter (http://www.experts-exchange.com/A_6070.html) — discuss in some detail how a form can be…
Using Microsoft Access, learn some simple rules for how to construct tables in a relational database. Split up all multi-value fields into single values: Split up fields that belong to other things into separate tables: Make sure that all record…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

920 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now