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Anonymous
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Filter(Expenses,'Created By'.Email=User().Email) & Created in the last 30 days

Hi,

 

Im not the greatest at filters and Ive got an app that has a large database now and id like to use the following filter 

 

Filter(Expenses,'Created By'.Email=User().Email) 

 

However im getting delegation errors, if i also filter by a created date field will that solve the delegation error? and what would be the code to sort by user and date?

 

Ive been playing around with the following but getting errors galore

 

Filter(Expenses,'Created By'.Email=User().Email; Filter(Expenses,Created=Date(Today(), (-31))

 

Thankyou

1 ACCEPTED SOLUTION

Accepted Solutions
RusselThomas
Community Champion
Community Champion

Hi @Anonymous ,

 

There are two sides to the filter logical test of your formula, and each will give you delegation errors.

Firstly, filtering by 'Created by' on the left of the operator:

Trying to filter complex object columns in Sharepoint will always give you delegation errors.  This is because what you're filtering is not a simple value, but an object with properties.  'Created By' is a person/group column and the value it contains is not a simple user name, but a whole user Object with many properties like DisplayName, Claims, Email etc.  The SharePoint column configuration let's you decide which property to display in the column (such as DisplayName), but it's still a complex object.

You will get the same delegation issues trying to filter any complex column, including Choice columns.  Some of these columns also can't be indexed, making working with large data sets problematic.

Secondly, the User().Email function on the right of the operator:

This function is something PowerApps understands, but the source does not.  It seems logical to expect PowerApps to resolve this to a value and pass the value through to the SPO query, but it generally doesn't seem to do this.  Functions in logical tests for filters seem to get passed through as they are, and only resolved after the data is returned - meaning you'll get the first 500 rows, then apply the filter - hence the delegation warning.

With both issues, the solution is the same - you need to avoid both complex columns and functions in your filter logical tests. 

 

For the first, when creating/adding to your list data from PowerApps, you may want to add a plain text column called 'userEmail' and actually populate this with the users email address (using User().Email), so when it comes time to filter on 'Created By'.Email you instead Filter on your userEmail column.  This also has the advantage of making the column indexable for large data sets and you won't get delegation warnings.

For the second, you need to set up a global variable in your app on start - something like

Set(gvarUserEmail, User().Email)

You can then reference gvarUserEmail in your logical tests within filters without incurring a delegation warning from that side.

Filter(source, userEmail=gvarUserEmail)

is where you want to end up to avoid delegation issues.

 

Lastly, dates are simple columns, so the filtering is straight forward BUT - you can only use = with SPO, not less than or greater than, otherwise these will incur delegation issues.  Again you may want to prepare the result of your formula to pass through to SPO as a variable instead of putting the formula inside the Filter() statement.

UpdateContext({varDateDiff: DateAdd(Today(), -31, Days)})
Filter(source, userEmail=gvarUserEmail && Date=varDateDiff)

Hope this helps,


RT

View solution in original post

2 REPLIES 2
RusselThomas
Community Champion
Community Champion

Hi @Anonymous ,

 

There are two sides to the filter logical test of your formula, and each will give you delegation errors.

Firstly, filtering by 'Created by' on the left of the operator:

Trying to filter complex object columns in Sharepoint will always give you delegation errors.  This is because what you're filtering is not a simple value, but an object with properties.  'Created By' is a person/group column and the value it contains is not a simple user name, but a whole user Object with many properties like DisplayName, Claims, Email etc.  The SharePoint column configuration let's you decide which property to display in the column (such as DisplayName), but it's still a complex object.

You will get the same delegation issues trying to filter any complex column, including Choice columns.  Some of these columns also can't be indexed, making working with large data sets problematic.

Secondly, the User().Email function on the right of the operator:

This function is something PowerApps understands, but the source does not.  It seems logical to expect PowerApps to resolve this to a value and pass the value through to the SPO query, but it generally doesn't seem to do this.  Functions in logical tests for filters seem to get passed through as they are, and only resolved after the data is returned - meaning you'll get the first 500 rows, then apply the filter - hence the delegation warning.

With both issues, the solution is the same - you need to avoid both complex columns and functions in your filter logical tests. 

 

For the first, when creating/adding to your list data from PowerApps, you may want to add a plain text column called 'userEmail' and actually populate this with the users email address (using User().Email), so when it comes time to filter on 'Created By'.Email you instead Filter on your userEmail column.  This also has the advantage of making the column indexable for large data sets and you won't get delegation warnings.

For the second, you need to set up a global variable in your app on start - something like

Set(gvarUserEmail, User().Email)

You can then reference gvarUserEmail in your logical tests within filters without incurring a delegation warning from that side.

Filter(source, userEmail=gvarUserEmail)

is where you want to end up to avoid delegation issues.

 

Lastly, dates are simple columns, so the filtering is straight forward BUT - you can only use = with SPO, not less than or greater than, otherwise these will incur delegation issues.  Again you may want to prepare the result of your formula to pass through to SPO as a variable instead of putting the formula inside the Filter() statement.

UpdateContext({varDateDiff: DateAdd(Today(), -31, Days)})
Filter(source, userEmail=gvarUserEmail && Date=varDateDiff)

Hope this helps,


RT

v-xida-msft
Community Support
Community Support

Hi @Anonymous ,

Could you please share a bit more about your scenario?

Do you want to filter your SP list records based on 'Created By' column and Created column?

 

Firstly, the Delegation warning issue that you faced is related to the 'Created By' column. Currently, the Complex type columns of SP list could not be delegated within PowerApps. The 'Created By' column is actually a Person type column in SP list, which is a Complex type column.

More details about columns of SP list supported for Delegation, please check the following article:

https://docs.microsoft.com/en-us/connectors/sharepointonline/#powerapps-data-type-mappings

 

In addition, based on the formula that you mentioned, I think there is something wrong with it. I have made a test on my side, please consider take a try modify your formula as below:

Filter(
Expenses,
'Created By'.Email = User().Email,
Created = DateAdd(Today(), -31, Days)
)

Note: I assume that you want to filter your SP list records which created 31 days ago.

More details about Filter function, please check the following article:

Filter function

 

Above formula may cause a Delegation warning issue, in order to get rid of this issue, please take a try with the following workaround:

Set the OnStart property of App control or OnVisible property of the first screen of your app to following:

ClearCollect(                   /* <-- Save your SP list records into a Collection */
              RecordsCollection, 
              Expenses           
)

Modify your Filter formula as below:

Filter(
        RecordsCollection,
       'Created By'.Email = User().Email, 
        Created = DateAdd(Today(), -31, Days)
)

Note: The Delegation warning issue is not an error. More details about Delegation in PowerApps, please check here.

 

Best regards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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