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Power Platform Community / Forums / Power Apps / Using GroupBy and Left...
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Using GroupBy and Left functions in PowerApps

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Posted on by 38

I have a SharePoint List with the Title field populated with the following data format:

 

24-1000.01

24-1000.02

24-1001.01

24-1002.01

24-1002.02

24-1002.03

 

The first thing I am trying to do with this data is use the GroupBy and Left functions to look at the 7 leftmost characters, then display a list of unique values in a gallery. So, the results would be:

 

24-1000

24-1001

24-1002

 

 

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I have the same question (0)
  • BhaskarDhone Profile Picture
    1,392 Super User 2025 Season 2 on at

    Try this on your gallery.

    Distinct(DataSource, Left(Title, 7))
  • Ami K Profile Picture
    15,679 Super User 2024 Season 1 on at

    @metalproswi - one example:

     

    DropColumns(
     GroupBy(
     AddColumns(
     'Your Table,
     "metalproswi_custom_column",
     Left(
     Title,
     7
     )
     ),
     "metalproswi_custom_column",
     "GroupedItems"
     ),
     "GroupedItems"
    )

     

    Please note the GroupBy function is not delegable.

  • v-mengmli-msft Profile Picture
    on at

    Hi @metalproswi ,

     

    Please try this.

    Distinct(Left(ListName.Title,7),Value)

     

    Best regards,

    Rimmon

  • metalproswi Profile Picture
    38 on at

    I tried the 'Distinct' and 'DropColumns' suggestions, however non worked in my gallery. I will try recreating my gallery from a basic app to rule out any other variables.

  • metalproswi Profile Picture
    38 on at

    metalproswi_0-1712583121670.png

    I can't get past a logic error after entering the data source.

  • Ami K Profile Picture
    15,679 Super User 2024 Season 1 on at

    @metalproswi:

     

    "metalproswi_custom_column" is a random name I gave to the newly added column. You can use any name you want.

     

    DropColumns(
     GroupBy(
     AddColumns(
     '2024 MP Lot Records',
     "title_custom",
     Left(
     Title,
     7
     )
     ),
     "title_custom",
     "GroupedItems"
     ),
     "GroupedItems"
    )

     

    Further reading on the AddColumns function:

     

    https://learn.microsoft.com/en-us/power-platform/power-fx/reference/function-table-shaping

     

  • metalproswi Profile Picture
    38 on at

    I am using an empty column in my SharePoint List, but I can't get past the generic 'invalid arguments' message. I will read up more on the AddColumns function.

     

    metalproswi_0-1712662446574.png

     

  • Ami K Profile Picture
    15,679 Super User 2024 Season 1 on at

    @metalproswi - please could you use the code I provided. At present you're trying to do something else (using the Distinct function is not part of my suggestion).

  • metalproswi Profile Picture
    38 on at

    Sorry about that. I was trying several things. The formula is no longer erroring; however the data is not displaying correctly. 

     

    My data set is like this:

    24-1000.01

    24-1000.02

    24-1001.01

    24-1002.01

    24-1002.02

    24-1002.03

     

    And I would like to display it like this:

    24-1000

         24-1000.01

         24-1000.02

     

    24-1001

         24-1001.01

     

    24-1002

         24-1002.01

         24-1002.02

         24-1002.03

     

    This is the what the current output is displaying like:

    metalproswi_0-1712676458761.png

     

  • Ami K Profile Picture
    15,679 Super User 2024 Season 1 on at

    @metalproswi - that is a completely different format than the one you asked for in your first post. You're going to need to create a Nested Gallery for that.

     

    https://www.youtube.com/watch?v=25_bdexevGk 

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