Using LOOKUPVALUE for currency conversion

[efroseroc]

Hi thanks for readingI'm using 3 tables for this operation.

Date table

Exchange - to USD

Currency	Date	Value
GBP	October of 2021	1.34

Data

Coin	DateData	Income
GBP	October of 2021	200000

The 3 of them are related (One direction).

To accoplish this I have the following calculated column:

USD = DIVIDE(Data[Income],
                LOOKUPVALUE(Exchange[Value],
                 Exchange[Date],Data[DateData],
                    Exchange[Currency],Data[Coin]
                ),0
            )

But is working correctly  just on a few rows, most of them are 0.

I made another column just with the LOOKUPVALUE and returns blank rows, hence the zeros.

Nonetheless I checked many examples and the combination of date and currency do exist.

I trimmed the GBP' field in both tables and nothing changed.

Any ideas are welcomed.

Best regards.

[amitchandak · Accepted solution]

@efroseroc , for the missing records, means blank or 0, do you have a conversion rate for that date. I doubt that at first .

The second data table might have timestamp , that can be checked by changing data type to datetime and use  format with time, there should not be any time other than 12 AM 

if that is case create a date like

Date = [datetime].date
or
Date = date(year([datetime]),month([datetime]),day([datetime]))

In power query

DateTime.Date([datetime])

Can you share a pbix after removing sensitive data.

[efroseroc]

Thanks @amitchandak, evidently the issue was in the dates. So I just transformed both to test and the Dax expression worked.

Best of luck!