Comments on: Roll-Up Summary Fields with Lookup Relationships – Part 1

By: Roll-Up Summary Fields With Lookup Relationships – Part 2 | Jeff Douglas - Technology, Coding and Bears... OH MY!

Tue, 13 Jul 2010 11:11:16 +0000

[...] the first part of this post I outlined the issues involved with creating a trigger to do roll-up summaries with a lookup [...]

By: Onur

Onur — Tue, 20 Apr 2010 21:36:46 +0000

Hi Jeff,
I am having some problems with aggregate function, it does not seem to sum items__c. If you do not mind would you post a little demonstration for roll up with aggregate functions.
I understand if you say I ask too much.
Thanks again and sorry for the bother.

By: Onur

Onur — Tue, 20 Apr 2010 18:03:49 +0000

Thank you for the quick response, since I am not a developer I will spend some time to understand the aggregate queries. i assume the new query should replace the
shipmentMap.get(ship.Id).items__c = ship.Inventory_Items__r.size();
part.

Thanks again

By: Jeff Douglas

Jeff Douglas — Tue, 20 Apr 2010 10:32:14 +0000

Onur, you can now use aggregate functions in SQOL to sum() the number of records for a certain criteria. Check out my blog post SOQL – How I Query With Thee, Let Me Count the Ways for more info for more info on aggregate functions.

By: Onur

Onur — Mon, 19 Apr 2010 14:50:31 +0000

Hi Jeff,
I am volunteering for a non-profit and I need to calculate the sum of values of items__c, instead number of sum of records. Is there any easy way to do it?
Thank you very much in advance for your help, this is a great blog.

By: Jeff Douglas

Jeff Douglas — Tue, 23 Feb 2010 10:55:35 +0000

Matt, I haven’t thought about it much but if you want to rollup this info to the parent account, I might look into scheduling a batch apex job to run at night. I’m not sure how much data you have or how many accounts but this might be the most scalable. Good luck!

By: Matt

Matt — Mon, 15 Feb 2010 07:56:52 +0000

Love your work Jeff!
You have saved my behind on more than one occasion.

How would you go about modifying this to roll-up values from Account record to Parent Account record?

By: jeffdonthemic

jeffdonthemic — Mon, 05 Oct 2009 19:34:24 +0000

That’s alot of info to update for each record. A couple of ideas might be to add a couple of formula fields to do the calculations, call some future methods to do the calculations depending on the number of licenses you have and perhaps even using async Apex.

By: u

Mon, 05 Oct 2009 19:22:25 +0000

Thanks for the posting.
I have two status fields in inventory_items
and in the shipment object I have to add the count for each status
for example fields:

Inventory_Items.shipped__c (boolean)
Inventory_Items.returned__c (boolean)
shipment__c.Total_items
Shipment__c.Total_shipped__c
shipment__c.Total_returned__c

Please give me suggestions how I am implement. I added the status and I am getting duplicate entries error while updating.
Thanks for your reply

By: u

Fri, 02 Oct 2009 23:36:36 +0000

Thanks for sample code. do you have suggestions on how I am implement status count?

I have a requirements to add total_items and returned_items count in shipment table.
I added a status in Inventory_Item__c if checked, it is returned item. Any suggestions can be great help