Remove Duplicate Rows From A Power Apps Collection

Remove the duplicate rows from any Power Apps collection with this 1 line of code.

//Duplicate removal code
ClearCollect(colSolution, ForAll(Distinct(yourCollectionName, ThisRecord), Result));

Here’s how it works:

The Distinct function returns a one-column table of unique values for a field. But when we use ThisRecord instead of a column name it results in a one-column table of unique records. Then we loop over the one column table using ForAll to extract the rows into a multliple column table.

For more help with collections check out my Power Apps Collections Cookbook. There are over 50 examples and code you can copy + paste into your own apps.

Full Example: Remove Duplicate Rows

Input Collection

Start with this Power Apps collection named colVehicles.

Output Collection

Our goal is to remove the duplicate rows from the Power Apps collection colVehicles and achieve this result.

Solution Code

Use this code to remove the duplicate rows from colVehicles.

//Create a collection
ClearCollect(colVehicles,
    {Year: 2020, Make: "Ford", Model: "F150"},
    {Year: 2018, Make: "Chevy", Model: "Silverado" },
    {Year: 2020, Make: "Ford", Model: "F150" },
    {Year: 2020, Make: "Ford", Model: "F150"},
    {Year: 2017, Make: "Nissan", Model: "Frontier"},
    {Year: 2016, Make: "GM", Model: "Yukon"},
    {Year: 2016, Make: "GM", Model: "Yukon"}
);

//Duplicate removal code
ClearCollect(mySolution, ForAll(Distinct(colVehicles, ThisRecord), Result));

Questions?

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