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Strange behavior when using AddColumns

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Posted on by Kubo

Hello everyone,

I got really strange behavior here, maybe someone can explain what is happening?

Basically following formula works only if there is "Lower" but it does not matter in which part? If I remove "Lower" from both emails, formula stop working. I'm using similar formula in other places and it works fine without "Lower", this happens only when used with "AddColumns".

WORKS:

AddColumns(
 SPlist1,
 "SortField1",
 CountRows(Filter(Sort(SPlist2,ID,Descending), 
Lower(List1Person.Email) = List2person.Email))

WORKS:

AddColumns(
 SPlist1,
 "SortField1",
 CountRows(Filter(Sort(SPlist2,ID,Descending), 
List1Person.Email = Lower(List2person.Email) ))

DOES NOT WORK:

AddColumns(
 SPlist1,
 "SortField1",
 CountRows(Filter(Sort(SPlist2,ID,Descending), 
List1Person.Email = List2person.Email))

Categories:

Building Power Apps

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WarrenBelz 154,889 Most Valuable Professional on at

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Hi @Kubo ,

Try this - StartsWith() is not case sensitive and is a good Delegable workaround

AddColumns( SPlist1, "SortField1", CountRows( Filter( Sort( SPlist2, ID, Descending ), StartsWith( List1Person.Email, List2person.Email ) ) ) )

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Kubo 61 on at

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Hi @WarrenBelz ,
Thank you for the reply.

That would be great workaround but for some reason I'm getting delegation warning on StartsWith this way:

"Part of this formula cannot be evaluated remotely. The 'StartsWith' function cannot be delegated if a field name appears in the second argument. Delegation warning. The "Filter" part of this formula might not work correctly on large data sets."

I have tried different way of writing the formula but cannot get rid of the warning.

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WarrenBelz 154,889 Most Valuable Professional on at

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Hi @Kubo ,

Neither AllColumns() nor CountRows() are Delegable anyway (they are 'hidden" Delegation limitations), so I am assuming that is the basis of the warning (although I have not seen that one before). StartsWith() is Delegable, but the returned result needs to be under your Delegation limit or CountRows will return a partial result.

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Kubo 61 on at

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Thanks again @WarrenBelz , I'm trying to pre-filter and sort data before delegation for CountRows hits. I will use workaround for now, I have saved email addresses as a plain text in SP list and I will use this to match the columns.

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WarrenBelz 154,889 Most Valuable Professional on at

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Hi @Kubo ,

If Delegation is your issue, you can try this

With( { wList: Filter( Sort( SPlist2, ID, Descending ), StartsWith( List1Person.Email, List2person.Email ) ) }, AddColumns( wList, "SortField1", CountRows(wList) ) )

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WarrenBelz 154,889 Most Valuable Professional on at

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Hi @Kubo ,

Just checking if you got the result you were looking for on this thread. Happy to help further if not.

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Kubo 61 on at

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Thank you very much @WarrenBelz , that helped a lot!

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