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Anonymous
Not applicable

## Moving sum last 12 month

hii
I want to find last 12 month sum from selected month if i am in Dec -17 then last 12 month person count (count of personnel number) again same for nov-17 is selected then that month and last 12 month count of personnel number count sum like wise .......

1 ACCEPTED SOLUTION
Anonymous
Not applicable

For this to work, you need a SERIAL ID column for the months in your calendar table.

A serial ID will start at 1, but will increase by 1 for each month, and NOT reset after 12.

For example, if your calendar starts in January 2016, then that month ID = 1.  January 2017's month ID = 13.

Assuming that column exists in your calendar table, (and the column is called [MonthID]), this is the formula:

```Measure =
CALCULATE (
SUM ( TableName[ColumnName] ),
FILTER (
ALL ( Calendar ),
Calendar[MonthID] <= MAX ( Calendar[MonthID] )
&& Calendar[MonthID]
>= MAX ( Calendar[MonthID] ) - 11
)
)```
2 REPLIES 2
Anonymous
Not applicable

For this to work, you need a SERIAL ID column for the months in your calendar table.

A serial ID will start at 1, but will increase by 1 for each month, and NOT reset after 12.

For example, if your calendar starts in January 2016, then that month ID = 1.  January 2017's month ID = 13.

Assuming that column exists in your calendar table, (and the column is called [MonthID]), this is the formula:

```Measure =
CALCULATE (
SUM ( TableName[ColumnName] ),
FILTER (
ALL ( Calendar ),
Calendar[MonthID] <= MAX ( Calendar[MonthID] )
&& Calendar[MonthID]
>= MAX ( Calendar[MonthID] ) - 11
)
)```
Anonymous
Not applicable

@Anonymous thank you this works very well....