How to Get Custom Week Desc in DAX

[Anonymous]

Basis on below data I want to add a calculated column with Week Description

I've done it in excel by typing it manually.

Also my week is starting from Thursday and ends on Wednesday hence I've Used this function to get the weekday 

WEEKDAY('Calendar'[date],14)

Requesting you to help me with a dax code which can be used to create a new calculated column with week information as shown below in third column.

The logic would be : If the date is current week then the value will be "This Week" else if the date is in last week then "This Week -1" else if the date is in last to last week then "This Week - 2" and so on.

Date	Weekday	WeekDesc
01-12-2021	7	This Week -3
02-12-2021	1	This Week -2
03-12-2021	2	This Week -2
04-12-2021	3	This Week -2
05-12-2021	4	This Week -2
06-12-2021	5	This Week -2
07-12-2021	6	This Week -2
08-12-2021	7	This Week -2
09-12-2021	1	This Week -1
10-12-2021	2	This Week -1
11-12-2021	3	This Week -1
12-12-2021	4	This Week -1
13-12-2021	5	This Week -1
14-12-2021	6	This Week -1
15-12-2021	7	This Week -1
16-12-2021	1	This Week
17-12-2021	2	This Week
18-12-2021	3	This Week
19-12-2021	4	This Week
20-12-2021	5	This Week
21-12-2021	6	This Week

[VahidDM · Accepted solution]

Hi @Anonymous 

Try this code to add a new column:

WeekDesc = 
Var _A = WEEKNUM(today(),14)
Var _B = WEEKNUM([Date],14)
Var _C = _B-_A
return
if(_B=_A,"This Week","This Week" & _C)

output:

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[ValtteriN]

Hi,

Like Syk mentioned you can use datediff. Additionally you can combine it with concatenate to get the exact result you described:

This week =

var TW = DATEDIFF(TODAY(),'Calendar'[Date],WEEK)

return

If(TW=0,"This week",CONCATENATE("This Week ",TW)

)
End result:

[Syk]

The datediff function should work for you! Try this out for creating a new column with dax

WeekDiff = 
DATEDIFF(today(),'Table'[Date],WEEK)