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## DAX Help

Needs to calculate Last 12 months average inventory

Days of Inventory in Hand (DIH) =  Average Inventory / Average daily Net Sales.

Now how to arrive average inventory:

From the selected date by user say 04.06.2020, go backward and check inventory value on 04.06.20, 04.05.20…………….. 04.07.19 (12 months)

Add all twelve months inventory and divide it by 12 so that you will get average inventory.

Average daily net sales =  say selected date 04.06.20 then ( Net sales from 04.07.19 to 04.06.20 (12 months) divide it by 12)

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Microsoft

## Re: DAX Help

Hi,

Did you have a calendar table with relationship with your fact table?

You can use the following dax to calculted rolling average inventory for last 12 months:

``````measure =
VAR _DATE =
SELECTEDVALUE ( 'Date'[Date] )
RETURN
CALCULATE (
SUM ( 'Table'[Inventory] ),
DATESBETWEEN ( 'Date'[Date], DATEADD ( _DATE, -12, MONTH ), _DATE )
) / 12``````

It will be the same for Net Sales. Or you can use quick measure in power bi to calculate rolling average. Please refer to https://www.mssqltips.com/sqlservertip/5635/creating-a-rolling-average-graph-with-power-bi/.

It will be nice if you can show us some sample data by onedrive for business.

Best Regards,

Dedmon Dai

5 REPLIES 5
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Super User IX

## Re: DAX Help

@SonaSingh123 , with a date calendar

Rolling 12 = CALCULATE(Average(Sales[Sales Amount]),DATESINPERIOD('Date'[Date],ENDOFMONTH(Sales[Sales Date]),-12,MONTH))
Rolling 12 = CALCULATE(Average(Sales[Sales Amount]),DATESINPERIOD('Date'[Date ],MAX(Sales[Sales Date]),-12,MONTH))

Or First Sum at month level and then take Avg

Rolling 12 = CALCULATE(sum(Sales[Sales Amount]),DATESINPERIOD('Date'[Date],ENDOFMONTH(Sales[Sales Date]),-12,MONTH))
Rolling 12 = CALCULATE(sum(Sales[Sales Amount]),DATESINPERIOD('Date'[Date ],MAX(Sales[Sales Date]),-12,MONTH))

Avg Rolling 12 = AverageX(summarize(Sales,Date[Month Year],"_1",[Rolling 12]),[_1])

Or [Rolling 12]/12

Proud to be a Super User!

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Post Patron

## Re: DAX Help

In my case, the user will select one date, and I have to average inventory based on that date.

Days of Inventory in Hand (DIH) =  Average Inventory / Average daily Net Sales.

Now how to arrive average inventory:

From the selected date by user say 04.06.2020, go backward and check inventory value on 04.06.20, 04.05.20…………….. 04.07.19 (12 months)

Add all twelve months inventory and divide it by 12 so that you will get average inventory.

Average daily net sales =  say selected date 04.06.20 then ( Net sales from 04.07.19 to 04.06.20 (12 months) divide it by 12)

Highlighted
Microsoft

## Re: DAX Help

Hi,

Did you have a calendar table with relationship with your fact table?

You can use the following dax to calculted rolling average inventory for last 12 months:

``````measure =
VAR _DATE =
SELECTEDVALUE ( 'Date'[Date] )
RETURN
CALCULATE (
SUM ( 'Table'[Inventory] ),
DATESBETWEEN ( 'Date'[Date], DATEADD ( _DATE, -12, MONTH ), _DATE )
) / 12``````

It will be the same for Net Sales. Or you can use quick measure in power bi to calculate rolling average. Please refer to https://www.mssqltips.com/sqlservertip/5635/creating-a-rolling-average-graph-with-power-bi/.

It will be nice if you can show us some sample data by onedrive for business.

Best Regards,

Dedmon Dai

Highlighted
Post Patron

## Re: DAX Help

But my client is asking average inventory calculation like below

From the selected date by user say 04.06.2020,

go backward and check inventory value on 04.06.20, 04.05.20…………….. 04.07.19 (12 months)

Add all twelve months inventory and divide it by 12 so that you will get average inventory.

Highlighted
Microsoft

## Re: DAX Help

Best Regards,

Dedmon Dai

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