Forum Discussion

vega's avatar
vega
Resolver III
8 years ago
Solved

Calculated Column Last Year Date

Hello,

 

I have a Date table and I want to create a calculated column that gives me the date of the previous year. For example, if the date is 1/1/2018 the LY column should be 1/1/2017. Are there any DAX functions that will accomplish this? When I use SAMEPERIODLASTYEAR or DATEADD, it returns a table, so it won't work with a calculated column. Also, if there is a function, how would it handle the leap year? What would the previous year column look like for 2/29/2016?

 

Thanks.

Need Help
  • Zubair_Muhammad's avatar
    Zubair_Muhammad
    8 years ago

    HI vega

     

    Try this Column.

     

    For 29 Feb 2016 it will give 1 Mar 2015

     

    LY Date =
DATE ( YEAR ( DateTable[Date] ) - 1, MONTH ( DateTable[Date] ), DAY ( DateTable[Date] ) )
  • v-huizhn-msft's avatar
    v-huizhn-msft
    8 years ago

    Hi vega,

     Based on my understanding, if this year is the leap year, the previous year column should display blank. For example the previous year of 2/29/2016 day is blank, because there is no 2/29/2015. Please create a calculated column using the formula.

    LY Date_Edit =
IF (
    MONTH ( DateTable[Date] ) = 2
        && DAY ( DateTable[Date] ) = 29,
    BLANK (),
    DATE ( YEAR ( DateTable[Date] ) - 1, MONTH ( DateTable[Date] ), DAY ( DateTable[Date] ) )
)


    Best Reards,
    Angelia

3 Replies

  • Zubair_Muhammad's avatar
    Zubair_Muhammad
    Community Champion
    8 years ago

    HI vega

     

    Try this Column.

     

    For 29 Feb 2016 it will give 1 Mar 2015

     

    LY Date =
DATE ( YEAR ( DateTable[Date] ) - 1, MONTH ( DateTable[Date] ), DAY ( DateTable[Date] ) )
    • Anonymous's avatar
      Anonymous
      Not applicable
      5 years ago

      Hi Zubair_Muhammad,

      This works very well as a calculated column. I was wondering if this can also be used as a measure?

  • v-huizhn-msft's avatar
    v-huizhn-msft
    Microsoft Employee
    8 years ago

    Hi vega,

     Based on my understanding, if this year is the leap year, the previous year column should display blank. For example the previous year of 2/29/2016 day is blank, because there is no 2/29/2015. Please create a calculated column using the formula.

    LY Date_Edit =
IF (
    MONTH ( DateTable[Date] ) = 2
        && DAY ( DateTable[Date] ) = 29,
    BLANK (),
    DATE ( YEAR ( DateTable[Date] ) - 1, MONTH ( DateTable[Date] ), DAY ( DateTable[Date] ) )
)


    Best Reards,
    Angelia