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ctwig76
Regular Visitor

Unroll JSON and include prefix

Hello,

I'm unrolling JSONs with shifting tag names. I need to include the parent tag name as a prefix as sometimes the nested tags have the same tag name

 

 

#"Expanded sessions.geo_info.country" = Table.ExpandRecordColumn(#"Renamed Columns5", "country", List.Buffer(List.Union(List.Transform(#"Renamed Columns5"[country], each Record.FieldNames(_))))),

 


Can someone advise how I can add "country." as a prefix to the field names that are expanded?

1 REPLY 1
Anonymous
Not applicable

Hi  @ctwig76 ,

 

You can try using the following function to modify the column name by merging the parent tag name as a prefix:

Table.TransformColumnNames - PowerQuery M | Microsoft Learn

Table.RenameColumns - PowerQuery M | Microsoft Learn

 

 

Best Regards,

Liu Yang

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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