How to insert index into a column of type table for each table

[StephenF]

I wish to have an index of 1,2,3,4 etc into row of type table. So each table in each row gets its own index

I think its something like this 

Table.AddIndexColumn(
[SortSubTable], "Rank", 1,1)

But how would that look exactly within advanced editor?

[Vijay_A_Verma]

Better to insert a custom column and put this formula there. This would like following in AE

#"Added Custom" = Table.AddColumn(#"Your previous step", "Custom", each Table.AddIndexColumn([SortSubTable], "Rank", 1,1))

[StephenF]

What refers to the column of type Table in your example? In my data I call my tables "CatChanges" and the Table column within it is called "All Data".

[Vijay_A_Verma · Accepted solution]

What matters is your previous step and All Data. Your step in AE would become

#"Added Custom" = Table.AddColumn(#"Your previous step", "Custom", each Table.AddIndexColumn([All Data], "Rank", 1,1))

 Better to insert a custom column and put following formula there which will take care of your previous step as well

= Table.AddIndexColumn([All Data], "Rank", 1,1)

[StephenF]

You need to put the column to be ranked on in the first column bizzarely also or it wont sort in the correct order.