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gwaczoka23's avatar
gwaczoka23
Frequent Visitor
3 years ago
Solved

Creating new column with value from previous date

Hi, Please help me with this issue. I tried to get the answer here, but I didn't manage to.  https://community.powerbi.com/t5/Desktop/New-column-with-value-from-previous-last-date/m-p/2880164#M991...
Need Help
  • v-yadongf-msft's avatar
    v-yadongf-msft
    3 years ago

    Hi gwaczoka23 ,

     

    Please add an index column in Power Query:

     

    Please try following DAX to  create two new columns:

     

    Previous index =
CALCULATE (
    MAX ( 'Table'[Index] ),
    FILTER (
        'Table',
        'Table'[Index] < EARLIER ( 'Table'[Index] )
            && 'Table'[Vendor] = EARLIER ( 'Table'[Vendor] )
    )
)

Previous flag_new = LOOKUPVALUE('Table'[Product flag],'Table'[Index],'Table'[Previous index])

     

     

    You will get the result you want:

    Best regards,

    Yadong Fang

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

gwaczoka23's avatar
gwaczoka23
Frequent Visitor
3 years ago

It's not working 😞 And there is not information about the supplier - it is also important. I have hundreds of them for each products, and there is a lot of products as well.

 

However, why there is -1 after earlier(date)?