Why I can't I use TODAY() in calculation?

[Domenick]

Hi guys,

I'm trying to sum a column for a specific relative date range. Basically, I want to eventually calculate an average over the the 6 weeks prior to last week. (I want a show "last 6 weeks average," but I can't use the current week because current week's data is posted at the end of the week and therefor unreliable).

When I try creating a measure like this, it says I can't use the TODAY() function nor a measure. 

Total Six Week Labor Spend = CALCULATE(SUM('LD (My Projects)'[BillExt]),

                                                 'LD (My Projects)'[TransDate]>DATEADD(TODAY(),49,DAY),

                                                 'LD (My Projects)'[TransDate]<DATEADD(TODAY(),7,DAY)

                                                 )

Any ideas?

[v-kkf-msft · Accepted solution]

Hi @Domenick ,

Please try the following formula:

Total Six Week Labor Spend = 
VAR CurrentWeekStart =
    TODAY () - WEEKDAY ( TODAY (), 2 ) + 1
RETURN
    CALCULATE (
        SUM ( 'LD (My Projects)'[BillExt] ),
        FILTER (
            'LD (My Projects)',
            'LD (My Projects)'[TransDate] >= CurrentWeekStart - 42
                && 'LD (My Projects)'[TransDate] < CurrentWeekStart
        )
    )        

If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.
Best Regards,
Winniz
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[johnt75]

You can't use TODAY because DATEADD needs a column of values, not a single value. Try

Total Six Week Labor Spend = CALCULATE(SUM('LD (My Projects)'[BillExt]),
'LD (My Projects)'[TransDate]>TODAY() - 49,
'LD (My Projects)'[TransDate]<TODAY() - 7
)