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Helper I

## Exchange Rates and Dates

Hi Power BI Community,

I am working on a dataset for exchage rates. However, the exchange rates have specific dates associated to the exchange rate.

I have the following exchange rate table:

 Currency Exchange Rate Start Date End Date USD 1.32 01/01/2021 31/01/2021 USD 1.54 01/02/2021 28/02/2021

I have the following Sales table:

 Sale Price Quantity Currency Sale Date 514 5 GBP 15/01/2021

I need to create a calculation to look at the data in the Sales table and accurately exchange the Sale Price based on the exchange rate for the the Sale Date happened, with reference to the start and end date for the currency exchange rate.

I would really appreciate any help on this.

1 ACCEPTED SOLUTION
Community Support

Try to create a measure like below:

``````SALE_ =
VAR _DATE = SELECTEDVALUE(Table2[Sale Date])
VAR _RATE =  CALCULATE(MAX(Table1[Exchange Rate]),FILTER(Table1,Table1[Start Date]<=_DATE&&Table1[End Date]>=_DATE))
RETURN SUM(Table2[Sale Price])*_RATE``````

3 REPLIES 3
Super User

@PowerEnthusiast , based on what I got so far new column in sales

rate = minx(filter(Rate, [Sale Date] >=[Start Date] && [Sale Date]<=[End date]),[Exchange Rate])

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Helper I

The dates are in different tables - how do I look up from the Sales table to the Exchange Rate table?. Also, I don't think I will be able to reference a column for the dates in the query above. Seems to only want measures.

Community Support

Try to create a measure like below:

``````SALE_ =
VAR _DATE = SELECTEDVALUE(Table2[Sale Date])
VAR _RATE =  CALCULATE(MAX(Table1[Exchange Rate]),FILTER(Table1,Table1[Start Date]<=_DATE&&Table1[End Date]>=_DATE))
RETURN SUM(Table2[Sale Price])*_RATE``````

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