Get max value in list from selected item

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Posted on 29 May 2020 05:45:00 by Marcthepunk

Hello to the community,

I need to get the max value from a SharePoint list.

From the form, a drop-down list provides the items to select. The selected item result should be MAX() lookup value from a specific column.

I have tried multiple variations of filters, lookups and sort without success. Any assistance will be appreciated.

First('SPList').column - produces perfectly the value but without the lookup reference.

I believe that I have to filter on the drop-down list selected item and search for my last entry on that column. However, I'm embarrass to say that I can't seem to get the syntax correct.

This produces an invalid argument type-

First(SortByColumns(Filter('SPList', List=Dropdown1.Selected.Value), Column1, Descending)).Column1

Thanks.

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Answers (1)

Marcthepunk 4 on 29 May 2020 at 14:43:25

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Re: Get max value in list from selected item

Thanks for the reply.

The syntax is finally correct with the double-quotes on the column name. However I had to use SharePoint's "true" column naming because of a space in the column title.

First(SortByColumns(Filter('SPList', List=Dropdown1.Selected.Value), "Column1", Descending)).Column1

The query is not returning any records though and I believe it has to do with my drop-down list. I did indeed tested the filter query on another column and it works. The thing is that my drop-down list is coming from a SharePoint list lookup (Text) column. This could be the reason why its not returning any records. Any ideas around this? Or do I have to alter/recreate the drop-down list lookup values?
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v-yutliu-msft on 29 May 2020 at 09:42:56

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Re: Get max value in list from selected item

Hi @Marcthepunk ,

Three problems on your original formula:
1)you need to add "" besides your column name.

2)Column1's data type

3)Could you filter function get right result: Filter('SPList', List=Dropdown1.Selected.Value)

If your filter function also has problem, please tell me the data type of list field and the drop down's Items.

I assume that Column1 is number type and the filter function is right, then you just need to make a little change:

First(SortByColumns(Filter('SPList', List=Dropdown1.Selected.Value), "Column1", Descending)).Column1

Here's a doc about sortbycolumns function for your reference:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-sort

Best regards,
WarrenBelz 146,745 Most Valuable Professional on 29 May 2020 at 05:55:42

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Re: Get max value in list from selected item

Hi @Marcthepunk ,
Are you looking for the Maximum of Column1 (I assume it is a Numeric field)
Max( Filter( 'SPList', List=Dropdown1.Selected.Value, Column1 ) )

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