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banav's avatar
banav
New Member
4 years ago
Solved

Expression.Error: A cyclic reference was encountered during evaluation.

Hi All,   I am getting a very simple error while creating a M code. I tried it on a very simple data set but still its happening in all pbix files... i am posting the pic of the table and the erro...
Need Help
  • v-yanjiang-msft's avatar
    v-yanjiang-msft
    4 years ago

    Hi banav ,

    According to your description, you only want to keep the Name and Age columns.

    In your query steps, the previous step of Custom1 is "Changed Type", so in the Table.SelectColumns function, you should choose the #"Changed Type" as the table, but not the original "Data_Table", like this: 

    = Table.SelectColumns(#"Changed Type",{"Name","Age"})

    Or you can create a blank query, insert the formula:

    = Table.SelectColumns(Data_Table,{"Name","Age"})

    Get the correct result.

    About the Applied steps, you can refer to this document: Applied steps - Power Query | Microsoft Docs

    I attach my sample below for reference.

     

    Best Regards,
    Community Support Team _ kalyj

    If this post helps, then please considerAccept it as the solution to help the other members find it more quickly.

v-yanjiang-msft's avatar
v-yanjiang-msft
Community Support
4 years ago

Hi banav ,

According to your description, you only want to keep the Name and Age columns.

In your query steps, the previous step of Custom1 is "Changed Type", so in the Table.SelectColumns function, you should choose the #"Changed Type" as the table, but not the original "Data_Table", like this: 

= Table.SelectColumns(#"Changed Type",{"Name","Age"})

Or you can create a blank query, insert the formula:

= Table.SelectColumns(Data_Table,{"Name","Age"})

Get the correct result.

About the Applied steps, you can refer to this document: Applied steps - Power Query | Microsoft Docs

I attach my sample below for reference.

 

Best Regards,
Community Support Team _ kalyj

If this post helps, then please considerAccept it as the solution to help the other members find it more quickly.

  • Dwisha_S's avatar
    Dwisha_S
    Regular Visitor
    2 years ago

    I am facing similar issue while creating the function Where I am looking to Group using Internal ID of the table and SUM values of one of the coloumn while filtering some other coloumns.

    Below is the Mcode: = Table.AddColumn(#"Added Conditional Column", "Custom.1", each Table.AggregateTableColumn(#"Demand Fcst Raw Outputs (2)",[Internal ID],
    List.Sum[Forecast],[Week Number]=Date.WeekOfYear(DateTime.LocalNow()) and [Week Number]=(Date.WeekOfYear(DateTime.LocalNow())+5)
    ))

    I am facing cyclic reference was encountered in the above expression. How can I resolve it?

    • Anonymous's avatar
      Anonymous
      Not applicable
      2 years ago

      Hi! Were you able to resolve this issue? I have a similar problem I am trying to solve.

  • pthapa's avatar
    pthapa
    Post Patron
    2 years ago

    Hello v-yanjiang-msft ,
    I have a similar issue with my power bi data not sure why I am also getting "A Cyclic reference was encountered during evaluation". My goal is to do incremental refresh on this dataset that is coming from stored procedure.

    Here are my steps:

    1. Source : running the stored procedure from sql server

    2. Then I Enable the query folding.

    3. Created RangeStart and RangeEnd parameters.

    4. Filtered the date/time field with above parameters.

    5. Once I close & apply, it will show the error shown below.

    Can you or someone please help me why? What do I need to do it?

    Thanks for your support.

    pthapa

    Here is the code from advanced editor: