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"Cannot insert duplicate key row" error

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Posted on by Metron-4

After recreating a view I use as the data source for my Power App. I now cannot edit any entries. After opening the Edit screen, making a change, and trying to save I receive the following message:

"The requested operation is invalid.

Server Response: Cannot insert duplicate key row in object 'dbo.Events' with unique index 'IX_Events'. The duplicate key value is (2022-03-22)."

dbo.Events is one of a few tables I reference in the view. "2022-03-22" refers to a date in the EventDate column in the Events table. I have made no changes to the dbo.Events table. When recreating my view (dbo.EventsView) I added two new columns; one to format the EventDate to use a longer format (Tuesday, March 22, 2022, as LongDate) and a calculated column (MyAge) to calculate age based on a birthdate and the EventDate.

Not sure if this is related, but when I open my app in PA Studio I see a bunch of invalid 'ID' name errors associated with the save edits button. Please see attached image. Here is the EventsView code:

CREATE VIEW [dbo].[EventsView] AS
SELECT dbo.Events.EventDate, FORMAT(dbo.Events.EventDate, 'dddd, MMMM dd, yyyy') AS LongDate, dbo.Events.Event, dbo.Homes.Home, dbo.Eras.Era, dbo.Eras.EraSort, dbo.Employers.Employer, dbo.Events.EventFavorite,
DATEDIFF(YEAR, '1971-11-11 00:00:00:00', dbo.Events.EventDate) - 
        CASE 
            WHEN MONTH('1971-11-11 00:00:00:00') > MONTH(dbo.Events.EventDate) 
                 OR (MONTH('1971-11-11 00:00:00:00') = MONTH(dbo.Events.EventDate) AND DAY('1971-11-11 00:00:00:00') > DAY(dbo.Events.EventDate)) 
            THEN 1 
            ELSE 0 
        END AS MyAge
FROM dbo.Events, dbo.Homes, dbo.Eras, dbo.Employers
WHERE (dbo.Events.EventDate BETWEEN dbo.Homes.HomeStartDate AND dbo.Homes.HomeEndDate)
  AND (dbo.Events.EventDate BETWEEN dbo.Eras.EraStartDate AND dbo.Eras.EraEndDate)
  AND (dbo.Events.EventDate BETWEEN dbo.Employers.EmployerStartDate AND dbo.Employers.EmployerEndDate)

Rob

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Building Power Apps

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ronaldwalcott 3,847 Super User 2025 Season 2 on at

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The message indicates you adding a new record not updating an existing record. I presume you are using a Patch which is probably incorrectly defined.

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Metron-4 8 on at

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Yes, you are correct, I am using a Patch function for this save edits control, and in my attached image it does show a bunch of ID errors related to a defined variable (galleryvar1) used to set the gallery screen to return to after saving edits. I never made any changes to the app itself so it has to be a data source issue. The only thing I did differently was recreate the view used in the app using Azure Data Studio to include two new columns as described above. I don't understand how this could cause a "duplicate key value" with the date.

I have been using this app flawlessly for years so it must be related to my view recreation. Well, I also deleted a Secure Store database from my Azure Portal server because I couldn't remember why I created it and it didn't appear to do anything, plus I wasn't using it as a data source in Power Apps. And it was costing me $3.02 a month.

I don't suppose recreating the view negated my ability to update records?

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timl 36,383 Super User 2025 Season 2 on at

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Hi CU21111819-0

Can you post your Patch formula? This is where the problem probably lies.

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ronaldwalcott 3,847 Super User 2025 Season 2 on at

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If you changed the data source that you are updating then you have effectively changed the Patch.

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Metron-4 8 on at

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Thank you. The dbo references are the same names i used in the view creation, so not sure why recreating the view would affect it. Here is the code (same as the image I attached):

Patch('[dbo].[Events]',If(galleryvar1=1,{ID:BrowseGallery1.Selected.ID},galleryvar1=2,{ID:BrowseGallery1_1.Selected.ID},galleryvar1=3,{ID:BrowseGallery1_2.Selected.ID},galleryvar1=4,{ID:BrowseGallery1_3.Selected.ID},galleryvar1=5,{ID:BrowseGallery1_4.Selected.ID},galleryvar1=6,{ID:BrowseGallery1_5.Selected.ID}),{Event: DataCardValue11.Text}, {EventDate: DataCardValue12.SelectedDate}); Back(ScreenTransition.None);Refresh('[dbo].[EventsView]')

Compare with the image to see what Power Apps finds problematic.

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Verified answer

timl 36,383 Super User 2025 Season 2 on at

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Hi Metron-4

The call to Patch attempts to update the record by ID value, but the ID column isn't returned in the View. Therefore I would modify the view to return the ID column.

CREATE VIEW [dbo].[EventsView] AS SELECT dbo.Events.ID, dbo.Events.EventDate, FORMAT(dbo.Events.EventDate, 'dddd, MMMM dd, yyyy') AS LongDate, dbo.Events.Event, dbo.Homes.Home, dbo.Eras.Era, dbo.Eras.EraSort, dbo.Employers.Employer, dbo.Events.EventFavorite, DATEDIFF(YEAR, '1971-11-11 00:00:00:00', dbo.Events.EventDate) - CASE WHEN MONTH('1971-11-11 00:00:00:00') > MONTH(dbo.Events.EventDate) OR (MONTH('1971-11-11 00:00:00:00') = MONTH(dbo.Events.EventDate) AND DAY('1971-11-11 00:00:00:00') > DAY(dbo.Events.EventDate)) THEN 1 ELSE 0 END AS MyAge FROM dbo.Events, dbo.Homes, dbo.Eras, dbo.Employers WHERE (dbo.Events.EventDate BETWEEN dbo.Homes.HomeStartDate AND dbo.Homes.HomeEndDate) AND (dbo.Events.EventDate BETWEEN dbo.Eras.EraStartDate AND dbo.Eras.EraEndDate) AND (dbo.Events.EventDate BETWEEN dbo.Employers.EmployerStartDate AND dbo.Employers.EmployerEndDate)

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Metron-4 8 on at

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Ah, thank you! I don't know how that dbo.Events.ID column went missing in my view code. Once I added it back in the app executed flawslessly.

Rob

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