Distinct rows from a collection

[bkk]

Morning guys, I have a collection as shown in Input collection. Primary key is email address. I want to get distinct rows from this collection in such a way that if Group Name and Is preferred member is provided in that row, it will be selected otherwise get the one with that information blank. Please see the Output collection for an example output. Any help will be greatly appreciated.

Thanks

Input Collection

Name	Email	Group Name	Is Preferred Member
John Doe	John.Doe@company.com
Jimmy Doe	Jimmy.Doe@company.com	Group 2
Jane Doe	Jane.Doe@company.com
Jimmy Doe	Jimmy.Doe@company.com
Jill Doe	Jill.Doe@company.com	Group 1	Yes
John Doe	John.Doe@company.com	Group 3
Jimmy Doe	Jimmy.Doe@company.com	Group 2	No

Output collection

Name	Email	Group Name	Is Preferred Member
Jane Doe	Jane.Doe@company.com
Jill Doe	Jill.Doe@company.com	Group 1	Yes
John Doe	John.Doe@company.com	Group 3
Jimmy Doe	Jimmy.Doe@company.com	Group 2	No

[Powerplatform01]

@bkk 

You can watch this video.Also request you to please subscribe this channel.Your one click helps me a lot.

https://youtu.be/XgOxBudz-8c

[BCLS776]

@bkk, a quick reply to get you started and we can help with specific code later if you need it. To accomplish what you want you will need to:

• Use GroupBy() using GroupName to bundle your records up
• Use AddColumns() to bring the Name, Email, and Preferred Member columns to the top level of the collection, if you need them there. The previous GroupBy will nest these fields as part of the grouped records.

Hope that helps!

[bkk]

Thanks BCLS776, appreciate the suggestion. Let me try and get back to you.

Bkk

[mdevaney]

@bkk 

Here’s a simple formula to do the work for you:

//Duplicate removal code
ClearCollect(colOutputCollection,ForAll(Distinct(colInputCollection, ThisRecord),ThisRecord.Result));

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[bkk]

@mdevaney Thanks. What you have quoted is what I have done, but that does bring in duplicates and hence I know that is not the answer. I have screen shots and code included.

Code on Create Collection

ClearCollect(
    colInputCollection,
    {
        Name: "John Doe",
        Email: "JohnDoe@company.com",
        Group: "",
        IsPRefMem: ""
    },
    {
        Name: "Jane Doe",
        Email: "JaneDoe@company.com",
        Group: "",
        IsPRefMem: ""
    },
    {
        Name: "Jimmy Doe",
        Email: "JimmyDoe@company.com",
        Group: "Group 2",
        IsPRefMem: ""
    },
    {
        Name: "Jill Doe",
        Email: "JillDoe@company.com",
        Group: "",
        IsPRefMem: "Yes"

    },
     {
        Name: "John Doe",
        Email: "JohnDoe@company.com",
        Group: "Group 3",
        IsPRefMem: ""
    },
    {
        Name: "Jane Doe",
        Email: "JaneDoe@company.com",
        Group: "",
        IsPRefMem: ""
    },
    {
        Name: "Jimmy Doe",
        Email: "JimmyDoe@company.com",
        Group: "Group 2",
        IsPRefMem: "No"
    },
    {
        Name: "Jill Doe",
        Email: "JillDoe@company.com",
        Group: "Group 1",
        IsPRefMem: "Yes"
    }
);

Create Distinct has following code

ClearCollect(colOutputCollection, ForAll(Distinct(colInputCollection,ThisRecord),ThisRecord.Result));

Distinct

[mdevaney]

@bkk 

I disagree.  Your example shows it worked perfectly.  The only duplicate record is for Jane Doe and that gets removed.

---
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[bkk]

You can disagree, but that is NOT the question I asked in the first place. Please read through the original question. 

Thanks

[mdevaney]

@bkk 

Yes, you’re right.  That is not the original question.  Please use the approach suggested by @BCLS776.  I’m unable to write the code needed on mobile.