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Compare collections to find duplicates

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Posted on by Rg129

Hi I hope someone can help. I have 3 collections in a gallery. Each collection has a name field and date field. How do I compare the three collections to see if there are duplicate values?

If there are duplicates I want to let the user know that there are dupes.

Collection A - name = Bob

Date = 6/15/2022

Collection B - name = Amy

Date = 7/8/2022

Collection C - name = Bob

Date = 6/15/2022

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Building Power Apps

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theapurva 970 Super User 2024 Season 1 on at

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you can refer the solution given by @v-jefferni here:
https://powerusers.microsoft.com/t5/Building-Power-Apps/Display-Duplicate-Items-in-Gallery/td-p/697547

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WarrenBelz 156,425 Most Valuable Professional on at

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Hi @Rg129 ,

You have three comparisons there - A-B, B-C and A-C - example of the first one

With( { wDup: ForAll( CollectionA As aDup, Filter( CollectionB, name = aDup.name && Date = aDup.Date ) ) }, If( CountRows(wDup) > 0, Notify("Duplicated") ) )

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Rg129 6 on at

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Thank you so much! You made it simple.

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