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RJF61
Post Prodigy
Post Prodigy

Add LookUp Column to Gallery

I am attempting to perform a LookUp from a SharePoint List and enter that info into a gallery.  My gallery is based on SP List "VehList".  I want to pull the Max value for column "CurrentMileage" from SP List VehInsp based on the SP List VehList "Title" = SP List VehInsp "VehNoDN".

 

LookUp(VehInsp, VehNoDN = Title, Max(CurrentMileage))

 

There are multiple records in VehInsp with the VehNoDN = Title from VehList.  Evidently, I am trying to make this too simple.

1 ACCEPTED SOLUTION

Accepted Solutions
BCBuizer
Multi Super User
Multi Super User

Hi @RJF61 ,

 

Thanks for the detailed explanation, it helps a lot in understanding the issue. 

 

When checking the code I found a comma in there where Power Apps expects an opening bracket:

BCBuizer_0-1672823272906.png

 

Please replace the "," after AddColumns with a "(".



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23 REPLIES 23
BCBuizer
Multi Super User
Multi Super User

Hi @RJF61 ,

 

A few things:

- A reference to the item in the gallery is missing (ThisItem)

- Using a LookUp will only return the first found item, so Max(CurrentMileage) will return the CurrentMileage value of that first item only

- Using LookUp in a gallery will potentially create a huge number of calls, impacting the performance of your app.

 

Because of the above I would recommend sticking with the GroupBy approach as discussed in your other topic.



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jsaunders_09
Resolver I
Resolver I

Hi @RJF61, is this related to the same issue we spoke about yesterday? Have you got some sample data you can share and I will mock it up for you to take a look at how I would do it

@BCBuizer Thanks for the response and info.  With the GroupBy, can I use the template item to open an Edit Form for the specific VehNo?  So as shown below, gallery is based on VehNo (i.e., 2, 32, 58, etc.).  The mileage is the Max for the GroupedData (VehNo).   

 

RJF61_0-1671635524400.png

 

As I have it currently, I am seeing the following when I select the "i" button.

 

RJF61_1-1671635811263.png

BCBuizer
Multi Super User
Multi Super User

Hi @RJF61 ,

 

Got your point now. Try this for the Form.Item property:

 

With(
    {_VehSelected: galVehListing.Selected},
    LookUp(
        VehInsp,
        VehNoDN = _VehSelected.VehNoDN && CurrentMileage = _VehSelected.HighestMileage
    )
)

 

 



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Hello @BCBuizer Again, thanks for the response.  Just to be sure I've explained well, since yesterday, I changed the primary data source for the gallery.  I am now using the VehList so grouping of the VehNo is no longer needed.  The gallery will pull all info from VehList and only needs to identify the Max CurrentMileage from the VehInsp list (based on the (VehNo).

 

Make sense?

BCBuizer
Multi Super User
Multi Super User

Hi @RJF61 ,

 

So are your looking to perform a LookUp on the highest mileage for each item inside the gallery, or in the form?



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Hello @BCBuizer 

Probably both.  The highest mileage on the gallery as a quick reference and then also on the form.

BCBuizer
Multi Super User
Multi Super User

Hi @RJF61 ,

 

For the gallery, you can use:

Max(
	Filter(
		VehInsp,
		VehNoDN = ThisItem.VehNo
	).CurrentMileage
)

and for the Form:

Max(
	Filter(
		VehInsp,
		VehNoDN = galVehListing.Selected.VehNo
	).CurrentMileage
)


Did you like my post? Please give it a thumbs up! Did I resolve your issue? Please click Accept as Solution to close the topic and so other members of the community can find solutions more easily.

Hi @BCBuizer 

Do I need to add the AddColumns prior to...

Max(
	Filter(
		VehInsp,
		VehNoDN = ThisItem.VehNo
	).CurrentMileage
)

 for the Gallery?

 

RJF61_1-1671719169350.png

 

RJF61_0-1671719050081.png

 

 

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