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How would I create a unique value index with Dax code? I am in the process of creating a ragged heirachy using a Tabular model so it has to be done using DAX code (I can't use PQ, etc). What I am looking for is a column which will assign an index for each instance where the item is distinct. If it is duplicated on another row I want it to be assigned the same index (as shown in the picture).
Thanks
Solved! Go to Solution.
@Anonymous It seems simpler to me like this:
Index Column = RANKX ( Table, Table[Item],, ASC, DENSE )
Try it!
B.
@Anonymous It seems simpler to me like this:
Index Column = RANKX ( Table, Table[Item],, ASC, DENSE )
Try it!
B.
Thanks, at first glance this looks to work. I have 57k rows though so I need to make sure that its consistent.
@Anonymous Indexes in DAX are not particularly easy and were once thought impossible. Hard to guarantee any sort of sort order, not that I see what sort order you would want. You can try this:
Column =
VAR __Item = [Item]
VAR __Text = CONCATENATEX('Table',[Item],"|")
VAR __Count = PATHLENGTH(__Text)
VAR __Table =
ADDCOLUMNS(
GENERATESERIES(1,__Count,1),
"__Item",PATHITEM(__Text,[Value])
)
VAR __TableFinal =
SUMMARIZE(__Table,[__Item],"Index",MINX(FILTER(__Table,[__Item]=EARLIER([__Item])),[Value]))
RETURN
MINX(FILTER(__TableFinal,[__Item] = __Item),[Index])
Original concept is from The Mythical DAX Index: (2) The Mythical DAX Index - Microsoft Power BI Community
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