update query - join tables - aggregate function

Posted on 2011-09-20
Medium Priority
Last Modified: 2012-05-12
I need to do something like this:

UPDATE t1, t2
SET t1.field = AVG(t2.field)
WHERE t1.key = t2.key

of course I get the error:
"Invalid use of group function"

Any Ideas?
Question by:arielbf
LVL 39

Accepted Solution

Pratima Pharande earned 2000 total points
ID: 36565860
Update t1

set t1.field = ( select AVG(t2.field) from t2 WHERE t1.key = t2.key )

Author Closing Comment

ID: 36565894
Perfect, Thanks!

Featured Post

A proven path to a career in data science

At Springboard, we know how to get you a job in data science. With Springboard’s Data Science Career Track, you’ll master data science  with a curriculum built by industry experts. You’ll work on real projects, and get 1-on-1 mentorship from a data scientist.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Exchange database can often fail to mount thereby halting the work of all users connected to it. Finding out why database isn’t mounting is crucial and getting the server back online. Stellar Phoenix Mailbox Exchange Recovery is a champion product t…
If you try to migrate from Elastix to Issabel, you will face a lot of issues. These problems are inevitable but fortunately, you can fix them. In the guide below, I will explain how I performed the migration while keeping all data and successfully t…
The Relationships Diagram is a good way to get an overall view of what a database is keeping track of. It is also where relationships are defined. A relationship specifies how two tables connect to each other. As you build tables in Microsoft Ac…
Watch the video of Kernel Migrator for SharePoint, which demonstrate the process easily of migration from SharePoint to SharePoint, OneDrive for Business & Google Drive servers, Public Folder to SharePoint, File Server to SharePoint. The tool has va…

597 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