Creating a Index Based off Several Conditions

[cfurminger]

Hello, 

I am trying to create a custom index that works off the 'Item' and 'Date'. For Example, I want it to reset each time a item has a matching item and the same date. But add 1 for every time a item & date match. 

See below example, for coloum 'Test Index' I have used the following formula, how do I get the coloum to look like 'Desried Outcome' column (I typed manually)

Test Index = COUNTX (
FILTER(Purchasing_Transaction,
EARLIER(Purchasing_Transaction[item]) = Purchasing_Transaction[Item] && Purchasing_Transaction[Date: Container Arrived at Warehouse] = Purchasing_Transaction[Date: Container Arrived at Warehouse] && EARLIER(Purchasing_Transaction[Date: Container Arrived at Warehouse]) >= Purchasing_Transaction[Date: Container Arrived at Warehouse]),Purchasing_Transaction[item])

Table: Purchasing_Transaction

@Daniel29195 @amitchandak @Ritaf1983 @Ahmedx 

[Ahmedx]

pls try this

[Ahmedx]

and this with use GroupKind.Local

[cfurminger]

Thankyou, although I cant see the measure?

[Ahmedx · Accepted solution]

if you need a measure you still need to add an index column first

[Ahmedx]

this code M in power query

[lbendlin]

read about GroupKind.Local  and apply it to the date