Solved

Is there a weighted average function in Oracle

Posted on 2004-04-23
2
4,947 Views
Last Modified: 2012-05-04
Is there a function that calculated a weighted average? I was browsing my Oracle Docs and I can't seem to find that type of function?
0
Comment
Question by:Marek_Zyskowski
[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
2 Comments
 

Expert Comment

by:tarar1
ID: 10901582
Yes you are you are true...i think there is no such thing ...you will have to do that yourself

If you can tell us the requirments then may be we can help you
0
 
LVL 8

Accepted Solution

by:
baonguyen1 earned 125 total points
ID: 10901661
This is not mine but I found it from Oracle web site. Not sure if it can help you:
------------------------------
Away to calculate weighted averages is as follows:

Create a calculated item using the following formula:

Weighted avg = sum(Weighting Factor * Weighting item) / sum(Weighting Factor)
e.g.
Average Price = sum(Quantity * Price) / sum(Quantity)

Use this calculated item in your report instead of the original item.
When a row shows the lowest level of data the calculation equals to the original value, but the subtotals and the totals show the weighted values all across your report.

Please be aware of the fact that when you calculate weighted averages
your dataset may contain zero or null values for the values to weight.
In some cases you may want to eliminate these figures.

The formula might look as follows then:
Average Price =
sum( Decode( nvl(price),0,0, quantity * price ))
/
sum( Decode( nvl(price),0,0, quantity ))
----------------------
0

Featured Post

Ready to get started with anonymous questions?

It's easy! Check out this step-by-step guide for asking an anonymous question on Experts Exchange.

Question has a verified solution.

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

This article started out as an Experts-Exchange question, which then grew into a quick tip to go along with an IOUG presentation for the Collaborate confernce and then later grew again into a full blown article with expanded functionality and legacy…
I remember the day when someone asked me to create a user for an application developement. The user should be able to create views and materialized views and, so, I used the following syntax: (CODE) This way, I guessed, I would ensure that use…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
This video shows how to Export data from an Oracle database using the Original Export Utility.  The corresponding Import utility, which works the same way is referenced, but not demonstrated.
Suggested Courses

617 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