How to LOOKUPVALUE in PowerQuery?

[sophie23]

Hi, 

I added a new column referencing to two different tables using LOOKUPVALUE but it won't show in PowerQuery. 

Any tips on how I can replicate LOOKUPVALUE but in PowerQuery?

I have Table A containing Currency & Date. I want to reference to Table B, match it according to Currency & Date, then return the Exchange Rate value.

Reason why I need to do it in PowerQuery is because I need to fill the dates with null exchange rates. 

Thanks! Any help will be appreciated 🙂

[PhilipTreacy · Accepted solution]

Hi @sophie23 

Use Merge Queies to create a new table with all Rows from TableA and the Exchange Rate from TableB where the date and Currency match.  Where's there's no match you'll get a null.

In the Merge dialog box you want to choose the Join Kind : Left Outer

Regards

Phil

[Icey · Accepted solution]

Hi @sophie23 ,

Please refer to this example:

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(let currentCustomer = [CustomerName] in Table.SelectRows(Table1, each [CustomerName] = currentCustomer)){0}[CustomerID]

Reference: Solved: How to lookup values in another table in the Query... - Microsoft Power BI Community

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Best Regards,

Icey

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

[PhilipTreacy · Accepted solution]

Hi @sophie23 

Use Merge Queies to create a new table with all Rows from TableA and the Exchange Rate from TableB where the date and Currency match.  Where's there's no match you'll get a null.

In the Merge dialog box you want to choose the Join Kind : Left Outer

Regards

Phil

[amitchandak]

@sophie23 , refer if this blog can help

https://eriksvensen.wordpress.com/2019/02/28/powerquery-replicate-doing-an-excel-vlookup-in-m/