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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?
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
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