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AshleyWells's avatar
AshleyWells
Regular Visitor
3 years ago
Solved

JSON data stored in 2 lists. 1 columns header, 1 data. Need to make into a table

Hi all,

 

I was wondering if anyone has any experience in converting multiple rows of JSON data that is stored as 2 lists, 1 as column headers and the other as the data and transforming them into 1 table?

I have some experience with Power Query but really struggling with this.

 

When I parse the JSON data, I get this.

 

 

When I expand the record, I get this.

This gives me the column names and the data.

 

 

I'm struggling to transform this data for all rows into a table.

 

Can anyone help?

 

Thanks in advance 🙂

 

Need Help
  • v-jingzhang's avatar
    v-jingzhang
    3 years ago

    Hi AshleyWells 

     

    Please add a custom column with this. Notice that there is a pair of {} around [ColumnData]. 

    = Table.AddColumn(PreviousStep, "Custom", each #table([ColumnNames],{[ColumnData]}))

    Then expand the custom table column. 

     

    Best Regards,
    Community Support Team _ Jing
    If this post helps, please Accept it as Solution to help other members find it.

7 Replies

  • m_dekorte's avatar
    m_dekorte
    Icon for Resident Rockstar rankResident Rockstar
    3 years ago

    Hi AshleyWells ,

     

    So does your ColumnData list contain a list for each of the columns in the same order as the ColumnNames?

    If so try this

     

     

    AddTable = Table.AddColumn( PrevStepName, "t", each 
    Table.FromColumns( [ColumnData], [ColumnNames], MissingField.UseNull )
)

     

     

    If instead your ColumnData list contains a list for each row, again in the same order as the ColumnNames.

    You can try this.

     

     

    AddTable = Table.AddColumn( PrevStepName, "t", each 
    Table.FromRows( [ColumnData], [ColumnNames] )
)

     

     

    I hope this is helpful

    • AshleyWells's avatar
      AshleyWells
      Regular Visitor
      3 years ago

      Hi

       

      I've tried using your solutions above and the closest I have got is the 2nd one but it's showing this

      I've tried to expand the table "t" but it's not showing me any columns

       

      Any ideas?

      • m_dekorte's avatar
        m_dekorte
        Icon for Resident Rockstar rankResident Rockstar
        3 years ago

        Hi AshleyWells,

         

        Could you share an image of the contents of the [ColumnData]  column as well?

         

        I've assumed it contained either a list with nested lists (one for each column header) in that case the list count for [ColumnData] and [ColumnHeaders] should be equal. OR it contained a list with nested lists (one for each row in the table) BUT it could also contain a list with nested records...

         

        Can you drill down intoit and let met know what you find?

        Thanks!