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Regular Visitor

## How to create last twelve months - calculated column/measure based on selected year and month slicer

I have a report which contains a year slicer and a month slicer so you can select a specific scope for the related charts. Some charts will only look at the selected month in the selected year, but I need other charts to take the selected year and month and specifically look for the twelve months up to the selected year+month.

So for example if you select:

• Year: 2016
• Month: 10

Then

• Chart 1: displays sales data with dates in october 2016 (this is easy and this works)
• Chart 2: should display similar sales data, but within the date range of October 2015 through October 2016.

I can't get Chart 2 to function propertly. The DAX query I'm working with seems to get close, but somehow doesn't do what I require:

```Sales12M = CALCULATE (
SUM('data'[Sales]) / 1000;
DATESBETWEEN (
'Date'[YearMonthnumber];
SAMEPERIODLASTYEAR ( NEXTDAY ( LASTDATE ( 'YearMonths'[YearMonthnumber] ) ) );
LASTDATE ( 'YearMonths'[YearMonthnumber] )
)
)```

I have tried fiddling around with a separate Date dates by day table and another YearMonths table that only shows 2016-01-01, 2016-02-01, etc.

What am I missing here?

Thanks in advance!

3 REPLIES 3
Highlighted
Super User

## Re: How to create last twelve months - calculated column/measure based on selected year and month sl

@shds

Using 2 slicer: Year and Month:

Use this Dax Code

```12M =
CALCULATE (
Sum(Sales[Value]),
DATESBETWEEN (
'Date'[Date],
DATEADD ( FIRSTDATE ( 'Date'[Date] ), -1; YEAR ),
LASTDATE ( 'Date'[Date] )
)
)```

Lima - Peru
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Frequent Visitor

## Re: How to create last twelve months - calculated column/measure based on selected year and month sl

In your DAX formular, you iterated by MONTH with

```DATESBETWEEN (
'Date'[YearMonthnumber];....```

And then used the NEXTDAY() function which pushes by a day. Try using the DAY iteration like this

```Sales12M = CALCULATE (
SUM('data'[Sales]) / 1000;
DATESBETWEEN (
'Date'[Date];
SAMEPERIODLASTYEAR ( NEXTDAY ( LASTDATE ( 'YearMonths'[Date] ) ) );
LASTDATE ( 'YearMonths'[Date] )
)
)```
Regular Visitor

## Re: How to create last twelve months - calculated column/measure based on selected year and month sl

I was wondering if you got this to work. I am having the same issue.  I am about to just give up