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How to access Multiple levels of many-to-one relationship

Dear Power Apps Community, 

 

I think I have a quite common issue, I already searched for answers (also found a few) but somehow I am still completely stuck and would appreciate your help. I am trying to access the QuestionCategory from the DbSaResponse table.

 

I have the following quite straightforward DataVerse Schema: 

 

DB_Schema.png 

I have a Gallery with my DbSaResponses as main source. I want to Display the Question, the Question Category and the different Answer Choices per Question which looks right now like this:

Gallery.png

 

As you can see I am able to access the QuestionText and Type simple via ThisItem.SpotAsessmentQuestionID.questiontext

For the AnswerChoices I manged to build a filter:

 

Filter(DbSaQuestionAnswersChoices, SpotAsessmentQuestionID.SpotAsessmentQuestionID = ThisItem.SpotAsessmentQuestionID.cr100_spotasessmentquestionid).QuestionAnswerPossibility

 

However I am somehow unable to create a Filter or LookUp function to access the CategoryName since ThisItem.SpotAsessmentQuestionID.QuestionCategory.CategoryName is not supported and every time to try to build a LookUpFunction I get Error Messages such as:  These types cant be compared: Guid, Record or  Table,Record:

 

LookUp(DbSaQuestionCategories, DbSaQuestionCategories.CategoryName = ThisItem.SpotAsessmentQuestionID.QuestionCategory)

 

Is there an Issue the way I set up my Data, or am I just simply missing something in my Function?

 

Thank you in advance.

7 REPLIES 7
CNT
Super User
Super User

@Caladryl 

Please try the following,

LookUp(DbSaQuestionCategories, DbSaQuestionCategories.CategoryID = ThisItem.SpotAsessmentQuestionID.QuestionCategory)

 

Please remember to give a 👍 and accept my solution as it will help others in the future.

@CNT Thank you for your fast response.

 

I have tried that unfortunately already and I receive the error: These types cant be compared: Table, Record. 

@Caladryl Can you share a screen shot with the error?

@CNT - Sure: This is currently the Error Message I receive. The Function makes actually completely sense to me.

 

Error.png

@Caladryl OK Try this,

LookUp(DbSaQuestionCategories, CategoryID = ThisItem.SpotAsessmentQuestionID.QuestionCategory)

 

Please remember to give a 👍 and accept my solution as it will help others in the future.

@CNT Could there be an Issue with my Dataverse Tables? I also tried your suggestion and received the error below:

Error.png

@Caladryl You will have to a double LookUp,

LookUp(DbSaQuestionCategories, CategoryID = LookUp(DbSa-Question, QuestionCategory=ThisItem.SpotAsessmentQuestionID.QuestionCategory).CategoryID)

 

Please remember to give a 👍 and accept my solution as it will help others in the future.

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