When Id has changed assign value 1

[ArT101]

I've been trying to find either a Power Query code or DAX code that allows me to assign the value 1 when the ID within my column table has changed. So I have a table that has an ID column that has duplicated ID's and I want to create another column that holds the values of either 1 or 0 where 1 shows where in the row the ID has changed and 0 showing the duplicated ID's following after before the ID changes again. 

[ArT101 · Accepted solution]

https://community.powerbi.com/t5/DAX-Commands-and-Tips/Return-a-one-for-the-first-instance-of-duplic...

The following thread was a quicker method for me to apply which did the job.

[Anonymous]

Hi @ArT101 

Create a sample like this :

Then create a calculated column to group .

Group_Index = 
RANKX(FILTER(ALL('Table'),'Table'[GROUP]=EARLIER('Table'[GROUP])),[Index],,ASC)

You will get a result like this :

Finally , create a calculated column to compare the ID .

True = 
var _1=SUMX(FILTER(ALL('Table'),'Table'[GROUP]=EARLIER('Table'[GROUP])&&'Table'[Index]=EARLIER('Table'[Index])),[ID])
var _2=SUMX(FILTER(ALL('Table'),'Table'[GROUP]=EARLIER('Table'[GROUP])&&'Table'[Index]=EARLIER('Table'[Index])-1),[ID])
var _minindex=MINX(FILTER(ALL('Table'),'Table'[GROUP]=EARLIER('Table'[GROUP])),[Index])
return
IF([Index]=_minindex|| _1= _2,0,  SUMX(FILTER(ALL('Table'),'Table'[GROUP]=EARLIER('Table'[GROUP])&&'Table'[Index]=EARLIER('Table'[Index])-1),[Group_Index]))

The fianl result is like this :

Best Regards,
Community Support Team _ Ailsa Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.