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prl's avatar
prl
Microsoft Employee
7 years ago

Subtract columns from 2 tables

Hello,

 

I am trying to build result table (Say C) which is derived from Table A and Table B. Table A and Table B has same columns and more than 500K records. User can filter records based on indepedent date slicer for each table.  How can I get below result in PowerBI (Table C = TableA on X date - TableB on Y date) ?

 

SELECT 

ISNULL(a.ID , b.ID) as ID,

ISNULL(a.CategoryID , b.CategoryID) as CategoryID,

ISNULL(a.Year , b.Year) as FYear,

ISNULL(a.Quarter , b.Quarter) as FQuarter,

(ISNULL(a.Val,0) -ISNULL( b.Val,0) ) as ResultVal

FROM (select * from TableA where sDate=X) as a

FULL OUTER JOIN (Select * from TableB where sDate=Y) as b

ON a.ID=b.ID and a.CategoryID=b.CategoryID and a.Year=b.Year and a.Quarter=b.Quarter

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2 Replies

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

    Hi prl ,

    From your description, I think we could achieve your desired output with dax expression.

    To get the solution more quickly, please share some data sample which could reproduce your scenario and your desired output so that we could help further on it.

    Best  Regards,

    Cherry

     

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

    Hi prl ,

    Have you solved your problem?

    If you have solved, please accept the replies making sense as solution to your question so that people who may have the same question can get the solution directly.

    If you still need help, please feel free to ask.

    Best  Regards,

    Cherry