Adding another column to a data table referencing results from another table? MERGE/LOOKUP??

Hi Anonymous 

You may have a try by Merge.

Then we select two tables and Period columns in two tables:

Result:

However, when we use calculated table, we can’t use merge in Power Query Editor, so at this time we have to use Dax to build a calculated column.

Effective Date =
LOOKUPVALUE (
    'Table'[Effective Date],
    'Table'[Period], Data_Calculated[Period]
)

Result:

You can download the pbix file fro m this link:

Case_Adding another column to a data table referencing results from another tableMERGEorLOOKUP.pbix 

Best Regards,

Rico Zhou

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