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Drop Columns not working?

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Posted on by MV-30041934-0

What is wrong with this formula? The error I'm getting is on the rename columns step stating that "a column named field_6 already exists". But I'm literally dropping the field_6 column in the previous step. Does drop columns simply not work? This should be taking the email addresses in field_6, making them insensitive by running them through the Lower function and saving them to a new field, then drop the original field_6 and rename the new field to field_6. When I view the collects created at these various steps, those columns do not appear in the collections. This code worked fine six months ago.

ClearCollect(formattedcolSecurityAll,

RenameColumns(

DropColumns(

AddColumns(

colSecurityAll

,insensitivefield_6,Lower(field_6))

,field_6)

,insensitivefield_6,field_6));

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Building Power Apps

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rzuber 552 Moderator on at

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@dsagfhjj try

With( {_records: DropColumns(AddColumns(colSecurityAll, insensitivefield_6, Lower(field_6)), field_6)}, ClearCollect(formattedcolSecurityAll, RenameColumns(_records, insensitivefield_6, field_6) );

To answer your question, I believe the issue here is that Power Apps is declarative.. Meaning it's trying to remove and add the column at the same time, and it doesn't understand how to do that..

To fix it, you define the table inside the context record of the With() statement, and then collect the defined table with the renamed column into the collection.

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MV-30041934-0 97 on at

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This gives the same error.

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rzuber 552 Moderator on at

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@dsagfhjj Strange... I will do some testing and report back.

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rzuber 552 Moderator on at

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@dsagfhjj What if you change it to:
With( { _records: RenameColumns( DropColumns(AddColumns(colSecurityAll, insensitivefield_6, Lower(field_6)), field_6), insensitivefield_6, field_6 ) }, ClearCollect(formattedcolSecurityAll, _records) );

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rzuber 552 Moderator on at

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@dsagfhjj I have tried both of my suggestions on a temporary table, and received no errors.. There is another element to this puzzle we are missing.

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MV-30041934-0 97 on at

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Same error.

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MV-30041934-0 97 on at

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Maybe I have the collection being used somewhere else? I'll have to look around.

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rzuber 552 Moderator on at

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@dsagfhjj Can you show me a screenshot showing where all the squiggly lines are in your formula?

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rzuber 552 Moderator on at

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@dsagfhjj What if you change it to

ClearCollect( formattedcolSecurityAll, ForAll( colSecurityAll As _record, Patch(_record, {field_6: Lower(_record.field_6)}) ) );

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MV-30041934-0 97 on at

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