Can i create a relation between 2 tables using one coulmn against multiple columns?

[SriKandimalla]

Hello PowerBI community,

I know we need a column in one table which we can relate with the column in another table to establish a relation ship. 

I have a peculiar requirement, where I need to establish a relation ship using one column of a table to multiple columns of another table.

Table 1:

Table1

Table2:

Table2

Is there anyway in power BI to relate these 2 tables?

Help is much appreciated. Thanks in advance

[lc_finance · Accepted solution]

Hi @SriKandimalla ,

You can unpivot the second table. This way you will have also one column in the second table and can create a relationship.

Here is a link for unpivoting in PowerQuery: https://www.myexcelonline.com/blog/unpivot-data-using-excel-power-query/

Let me know if it fixes it.

Regards,

LC

Interested in Power BI finance templates? Check out my blog at www.finance-bi.com

[v-frfei-msft · Accepted solution]

Hi @SriKandimalla ,

To unpivot the table 2 as the picture below.

M code for your reference.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSkktKcrPLFHSUTIEYiMoNgPzY3VA8jk5icVQYWMkbAaWLsjIT83LrICLIbAxWL44NbGkJCcVyDcBYlMUDJIvykzOyM3PS4EKWkINMoEryEstr8wvqoQaagJ1iCmYHRsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [City = _t, fruits = _t, Veggies = _t, meat = _t, dairy = _t, grains = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"City", type text}, {"fruits", Int64.Type}, {"Veggies", Int64.Type}, {"meat", Int64.Type}, {"dairy", Int64.Type}, {"grains", Int64.Type}}),
    #"Unpivoted Other Columns" = Table.UnpivotOtherColumns(#"Changed Type", {"City"}, "Attribute", "Value")
in
    #"Unpivoted Other Columns"

Colse and apply, then we can create relationship between table 1 and table 2.

BTW, pbix as attached.

[SriKandimalla]

Thank you for your detailed solution. Really appreciate it.

In addition to this question, what if I have additional columns and I have to still establish a relationship with the 2 tables?

[lc_finance]

Hi @SriKandimalla ,

Can you share more about the additional columns and what you would like to achieve?

[lc_finance · Accepted solution]

Hi @SriKandimalla ,

You can unpivot the second table. This way you will have also one column in the second table and can create a relationship.

Here is a link for unpivoting in PowerQuery: https://www.myexcelonline.com/blog/unpivot-data-using-excel-power-query/

Let me know if it fixes it.

Regards,

LC

Interested in Power BI finance templates? Check out my blog at www.finance-bi.com