PowerApps - Merge Two Collections and Remove Duplicates

By Vinod Thachin -

One of my Project got a requirement to combine two Collections and Remove the Duplicates while Combining in to a single collection.

For Example i have two Collections,

StudentDetails - Columns StudentID, Name, Age, DateOfBirth

StudentMarks - Columns StudentID, Subject1Marks, Subject2Marks, Subject3Marks

Now I want to merge these two collections without having the Duplicate data. I have used following formulae to combine the two collections into new collection StudentsCollections

With(

   {

      StudentInfo1:

      ShowColumns(

         'StudentDetails', 

         "Name",

         "Age",

         "DateOfBirth"

      ),

      StudentInfo1:

      ShowColumns(

         'StudentMarks', 

         "StudentID", 

         "Subject1Marks",

         "Subject2Marks",

         "Subject3Marks"

      )

   },

   ClearCollect(

      StudentsCollections,

      StudentInfo1,

      Filter(

         StudentInfo2,

         !(StudentID in StudentInfo1.StudentID)

      )

   )

)

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