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ouma
Frequent Visitor

DAX that looks up value from another table2 and return data where date in table2 <= date in table1

Hello Guy

This problem seems simple but been stuck with it for a bit. I have two table call it Table1 and Table2. I want to create a calculated column in Table1 that picks the exchange rate from table2 where;

1. The dates in Table1 and Table2 Match

2. If there is not date match in the two tables the return the closest earlier date match. I have attached the two tables and the results I would like to achieve with the new calculated column

Looking forward to your assistance, thanks

 

ouma_0-1684328532243.png

What is would like to achieve in the new calculated column

ouma_1-1684328598576.png

 

2 ACCEPTED SOLUTIONS
amitchandak
Super User
Super User

@ouma , Try like

 

new column in table 1
=
var _date = maxx(filter(Table2, table2[Date] <= table1[Date]), Table2[Date])
return
maxx(filter(Table2, table2[Date] <=_date), Table1[Exchange Rate])

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View solution in original post

Thanks Amitchandak for your quick response. Your DAX helped me a lot, I improved it as below and it worked

 

VAR _date =

        TOPN (

            1,

            FILTER (

               Table2, table2[Date] <= table1[Date]

            ),

            table2[Date],

            DESC

        )

    RETURN

        MAXX (

                _maxDate,

                Table1[Exchange Rate]

        )

View solution in original post

2 REPLIES 2
amitchandak
Super User
Super User

@ouma , Try like

 

new column in table 1
=
var _date = maxx(filter(Table2, table2[Date] <= table1[Date]), Table2[Date])
return
maxx(filter(Table2, table2[Date] <=_date), Table1[Exchange Rate])

Join us as experts from around the world come together to shape the future of data and AI!
At the Microsoft Analytics Community Conference, global leaders and influential voices are stepping up to share their knowledge and help you master the latest in Microsoft Fabric, Copilot, and Purview.
️ November 12th-14th, 2024
 Online Event
Register Here

Thanks Amitchandak for your quick response. Your DAX helped me a lot, I improved it as below and it worked

 

VAR _date =

        TOPN (

            1,

            FILTER (

               Table2, table2[Date] <= table1[Date]

            ),

            table2[Date],

            DESC

        )

    RETURN

        MAXX (

                _maxDate,

                Table1[Exchange Rate]

        )

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