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Question

I need some help with indexing tables with a cap on the index number.

The goal is an index from lets say 1:15. When the index reaches 15, then it should do another iteration of 1:15 indexing until the end. The number is dependent on another index in another table with no relationship.

Any recommendations on how to proceed?

Any help would be much appreciated

Answer 1

Add your index, developed any way you like. Then add a custom column that uses Number.Mod to convert the first column into repeating number groups. The below counts sequentially from 0...X then converts that to repeating numbers of 1...15 in a second column. Delete the original index after

letSource = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Added Index" = Table.AddIndexColumn(Source, "Index", 0, 1),
#"Added Custom" = Table.AddColumn(#"Added Index", "NewIndex", each 1+Number.Mod([Index],15))
in #"Added Custom"