Identify all items (rows) that does not exists in previous month.

[caio_queiroz]

Hello All.

I have a table Resource Cost, with my resource costs in Septmeber and October, i want to compare the costs between the two month, but i also want to take off what is new (it means resources created in October) to use it for the compare.

I have tried several ways, but none i got what i need.

Could you guys help me?

btw i have a calendar table in my dashboard and there is a relationship with my resources tables

[v-robertq-msft]

Hi, 

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[Jihwan_Kim · Accepted solution]

Hi,

Since there is no sample data model, I created it by myself.

I am not sure if it fits your situation.

Check the below picture and the attached pbix file below.

All measures are in the attached pbix file.

October new resouces: =

VAR septemberresouces =

CALCULATETABLE ( VALUES ( Data[Resource] ), 'Calendar'[Month] = 9 )

VAR octoberresources =

CALCULATETABLE ( VALUES ( Data[Resource] ), 'Calendar'[Month] = 10 )

VAR octobernewresources =

EXCEPT ( octoberresources, septemberresouces )

RETURN

IF ( COUNTROWS ( octobernewresources ) = 1, "New in October" )

Sep & Oct resouces cost difference: =

VAR septemberresouces =

CALCULATETABLE ( Data, 'Calendar'[Month] = 9 )

VAR octoberresources =

CALCULATETABLE ( Data, 'Calendar'[Month] = 10 )

VAR sep_oct_both_resources =

INTERSECT (

SUMMARIZE ( octoberresources, Data[Resource] ),

SUMMARIZE ( septemberresouces, Data[Resource] )

)

VAR cost_diff_addcolumns =

ADDCOLUMNS (

sep_oct_both_resources,

"@costdiff",

CALCULATE (

SUMX ( octoberresources, Data[Cost] ) - SUMX ( septemberresouces, Data[Cost] )

)

)

RETURN

SUMX ( cost_diff_addcolumns, [@costdiff] )