Show 7 days before data

[AzamatKudaev]

Hi everyone!

I am trying to show 7 days before sales quantity on column.

For represent task clearly, let me show result table as a screen of excel, which I am looking for, but in aiming of simplicity, not for 7 days before, but 1.

Sorry of using not a power bi data scree. That's cause of big data volumes in power bi area

Tryed to use LOOKUPVALUE and DATEADD, but without success

[Greg_Deckler]

You should be able to add your Date column as a slicer on your report page and if you click the little drop down arrow on the right-hand side of the visual you can select Relative and enter a number of days.

[AzamatKudaev]

It Is helpfull addition, but i need to see comparisons, as in result table in screen above

[WolfBiber · Accepted solution]

Hey,

an easy way is to create a seperate table like:

let
Source = YourTable
in
Table.Group(YourTable, "GroupByColumn", {"Total", each List.Sum([SumColumn])})
in
Source

Have a look to following function 

https://msdn.microsoft.com/en-us/library/mt260774.aspx