Sameperiodlastyear per category

[Kudy]

My first post ever 🙂

Hi,
I have the following table called Transactions from an online shop:

Order ID	Item ID	Category	Date
444	apple	fruit	1-jan-2021
555	pear	fruit	2-jan-2021
666	apple	fruit	3-jan-2021
777	potato	vegetable	4-jan-2021
111	orange	fruit	1-jan-2020
222	broccoli	vegetable	2-jan-2020
333	cabbage	vegetable	3-jan-2020

Now I have created a slicer for Date and a matrix table.
In my matrix table, I have now two first columns below (A&B).
What I don't have is column C, which counts LY values for the date range I chose through my slicer. 

A   Row: Category	B  Values: Count Item ID	C   Values: Count Item ID      (sameperiodlastyear)
Fruit	3	1
Vegetable	1	2

Really appreciate your help!

Br,
Kudy

[v-stephen-msft · Accepted solution]

Hi @Kudy ,

You could create a seperate year table.

Table 2 = DISTINCT('Table'[Date].[Year])

Two measure are created as

Count Item ID = IF(ISFILTERED('Table 2'[Year]),CALCULATE(COUNT('Table'[Item ID]),FILTER('Table',YEAR([Date])=SELECTEDVALUE('Table 2'[Year]))),COUNT('Table'[Item ID]))

Count Item ID(sameperiodlastyear) = IF(ISFILTERED('Table 2'[Year]), CALCULATE(COUNT('Table'[Item ID]),FILTER('Table',YEAR([Date])=SELECTEDVALUE('Table 2'[Year])-1)),COUNT('Table'[Item ID]))

Best Regards,

Stephen Tao

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Greg_Deckler]

@Kudy There are two main ways of doing this, using TI functions like SAMEPERIODLASTYEAR or not:

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