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Nicks612's avatar
Nicks612
Helper I
2 years ago
Solved

how to make conditional column using two tables with reference to another table

I have two tables: table A and table B as shown below. I want to make a conditional column in Table A with reference to Table B which contains OK and Nok data taking reference from Table B. Table A...
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  • Anonymous's avatar
    Anonymous
    2 years ago

    Hi Nicks612 ,

    Please try using merge query

    and then transform the New Status column.

    In the simulated data, there will be the case of matching to more than one status, here I assume that there is "OK" in the status to return "OK", otherwise return "NG".


    Please check the pbix file.

    Best Regards,
    Gao
    Community Support Team

     

    If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly.
    If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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tackytechtom's avatar
tackytechtom
Most Valuable Professional
2 years ago

Hi Nicks612 ,

 

How about this:

 

Here the code in Power Query M that you can paste into the advanced editor (if you do not know, how to exactly do this, please check out this quick walkthrough)

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("dc47EoQwDAPQu6SmkCV/krMw3P8ahF1mQgGt30jWvjejPLJtjaAQEAbDqx3bm3UvxocVhsbPqMjqy7oBprtTfOboVizzV5t3i7hzOVetzilE+H9LTRPXvzIhPb/McNlxAg==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Sr.No = _t, DBKey = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Sr.No", Int64.Type}, {"DBKey", Int64.Type}}),
    #"Merged Queries" = Table.NestedJoin(#"Changed Type", {"Sr.No"}, TableB, {"Sr.No"}, "TableB", JoinKind.LeftOuter),
    #"Expanded TableB" = Table.ExpandTableColumn(#"Merged Queries", "TableB", {"Status"}, {"New Status"})
in
    #"Expanded TableB"

 

The trick is to use the merge function:

 

let me know if this helps you 🙂

 

/Tom
https://www.tackytech.blog/
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