LookUp last entry submitted by User

[TorreyFalconer]

Hello, 

Need a little assistance with a simple expression. I have a SharePoint list as the data source. In my powerapps screen I want the 'Site Lookup' field (which is a Choice dropdown field) to default to what that user chose for that field on the last entry. 

This is what I am thinking, but need help so that it only takes the last entry by that user:

LookUp('Driver Activity Log',Date=First('Driver Activity Log'),'Site Lookup')

Also the 'Site Lookup' reference (in red) isn't working? perhaps because it is a choice field?

[mdevaney]

My idea is below. Notice that I have sorted the Driver Activity log in such a way that the most recent entries are at the top of the dataset. This ensures LOOKUP is retrieving the correct info.

LookUp(
Sort('Driver Activity Log', ID, Descending),
Email=User().Email,
‘Site LookUp’
)

I chose to LOOKUP in a column called Email that doesn’t exist in your dataset yet. You’ll have to add it.

I think the warning sign is showing because your formula cannot delegated due to including a dates data type. Some data types/functions can be delegated in SharePoint and others cannot. More info here: https://powerapps.microsoft.com/en-us/blog/sharepoint-delegation-improvements/

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[v-yutliu-msft · Accepted solution]

Hi @TorreyFalconer ,

Firstly, Date is a fieldname, First('Driver Activity Log') is a record, you can not compare a field with a record.

Try this:

LookUp('Driver Activity Log',Date=First('Driver Activity Log').Date,'Site Lookup')

You need to compare a value with a field.

Secondly, this formula will have delegation warning.

Could you tell me how many are your records?

If your record is less than 500, there's no problem.

 If your record is larger than 500 and smaller than 2000, please change your non-delegateable limit to 2000.

If your record is larger than 2000, please modify your formula to delegateable functions. Or else you will get wrong result.

You could refer this in details:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/delegation-overview

Best regards,