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michaelstone's avatar
michaelstone
Icon for Helper I rankHelper I
7 years ago
Solved

Strange behaviour with SAMEPERIODLASTYEAR

Hi,   I'm building a Power BI report which is analysing PoS transaction data so have a fact table (Transactions) with every individual transaction including timestamp and sales amount (Transactions...
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  • v-piga-msft's avatar
    v-piga-msft
    7 years ago

    Hi michaelstone ,

    Sorry for my mistake.

    Please modify the measure Total Sales - Previous Year  like below.

    Total Sales - Previous Year =
SUMX (
    'Calendar',
    CALCULATE ( [Total Sales], SAMEPERIODLASTYEAR ( 'Calendar'[Date] ) )
)

    Here is the output.

    Best  Regards,

    Cherry

     

     

v-piga-msft's avatar
v-piga-msft
Icon for Resident Rockstar rankResident Rockstar
7 years ago

Hi michaelstone ,

By my test and research based on your pbix, I'm afraid that you should create the table with the date column from Calendar table like below so that you could get the correct output.

Best  Regards,

Cherry

michaelstone's avatar
michaelstone
Icon for Helper I rankHelper I
7 years ago

Hi v-piga-msft ,

My production PBIX does use the Calendard[Date] column but as you can see from your example, the Total at the bottom of the Total Sales - Previous Year column is still incorrect.

I was only using Transactions[Date] in the visualisation because it showed the underlying problem i.e. that the SAMEPERIODLASTYEAR is not working correctly and is including dates to the end of the month.

Thanks,

Michael

  • v-piga-msft's avatar
    v-piga-msft
    Icon for Resident Rockstar rankResident Rockstar
    7 years ago

    Hi michaelstone ,

    Sorry for my mistake.

    Please modify the measure Total Sales - Previous Year  like below.

    Total Sales - Previous Year =
SUMX (
    'Calendar',
    CALCULATE ( [Total Sales], SAMEPERIODLASTYEAR ( 'Calendar'[Date] ) )
)

    Here is the output.

    Best  Regards,

    Cherry

     

     

    • michaelstone's avatar
      michaelstone
      Icon for Helper I rankHelper I
      7 years ago

      This seems like a workaround for an underlying bug but will accept as the solution.

       

      Thanks v-piga-msft