IF Table Column Contains Matching Value Place Another Value in New Column

[vijenkin]

Hello I am currently trying to solve a problem in PowerBi. I have two tables that have no relationship to each other. Table A contains a column with text that is user generated. Table B contains two columns that have a Unique Code and its corresponding Symbolic Name.

I want to "scan" each row of the column in Table A and IF a row contains the Unique Code from Table B, place the Unique Code and Symbolic Name from Table B into a brand new column in Table A. 

In short, I am trying to create a column that has the unique code and symbolic name information presented instead of the user generated information.

Example 

Data

Table A

Original Title

There is a problem with 012345

67890 spike over the last two weeks

Many devices hitting 24680 as of last week

Table B

Unique Code	Symbolic Name
012345	Network Error
67890	Server Error
24680	Client Error

Result

Table A

Original Title	New Title
There is a problem with 012345	012345 (Network Error)
67890 spike over the last two weeks	67890 (Server Error)
Many devices hitting 24680 as of last week	24680 (Client Error)

Bonus Task

If the above can be solved then I will mark this problem as solved. However, it would be great if when the IF condition fails because no match is found the text in the Original Title column is returned

Original Title	New Title
There is a problem with 012345	012345 (Network Error)
67890 spike over the last two weeks	67890 (Server Error)
Many devices hitting 24680 as of last week	24680 (Client Error)
Help needed for system problem	Help needed for system problem

I will not be able to share the PBIX file or provide screenshots of the actual data for privacy reasons

Any help or direction would be greatly appreciated. If this is not possible or more information is needed, please feel free to let me know. Thanks.

[vijenkin]

Any help or direction would be greatly appreciated. If this is not possible or more information is needed, please feel free to let me know. Thanks.

[Ashish_Mathur · Accepted solution]

Hi,

This calculated column formula works

=if(ISBLANK(FIRSTNONBLANK(FILTER(VALUES(code_names[Unique Code]),SEARCH(code_names[Unique Code],Data[Original Title],1,0)),1)),Data[Original Title],FIRSTNONBLANK(FILTER(VALUES(code_names[Unique Code]),SEARCH(code_names[Unique Code],Data[Original Title],1,0)),1)&" ("&LOOKUPVALUE(code_names[Symbolic Name],code_names[Unique Code],FIRSTNONBLANK(FILTER(VALUES(code_names[Unique Code]),SEARCH(code_names[Unique Code],Data[Original Title],1,0)),1))&")")

Hope this helps.

[vijenkin]

Hi Ashish, I really appreciate the solution you provided. Unfortunately, when modifying the DAX to include the Data[Original Title] PowerBi does not recognize the column. For more context the table with the Original Title is being pulled in from Azure Dev Ops. Is there perhaps some kind of relationship or data type that needs to be had before the column can be recognized in DAX? 

Thanks

[Ashish_Mathur]

No relationship needs to be created.  I cannot say why it is not working on your file.  

[vijenkin]

So I figured out what the problem was. I created the column in the wrong table. I forget for certain DAX functions the corresponding value has to be in the same table. Now with that said I don't get any errors from the DAX but when activating the column all of the rows are 

0 (Success)

I am assuming this means the function is working but can't find anything. I checked the code_names[Unique Code] tablle and the codes that are in Data[Original Title] are indeed there.

Any thoughts? 

[Ashish_Mathur]

There has to be some spelling error or some extra spaces/invisible characters.

[vijenkin]

So I believe I figured what the porblem is.

In the code_names[Unique Code] table there is a row that contains "0 (Success)" because that is the error code for success. Originally I did remove that row as the report should only have failures so success is not needed. However, afterwards the column showed "1 (another Error name)" . Therefore this makes me believe that there is something with the function that is searching through the Unique Code table which does not account for values equal to the two examples I just listed. For more context the Unique Code table looks like the below and has over 60K rows. 

Unique Code	Symbolic Name
0	Success
1	Security Error
2	Server Error
....	......
000000	Client Error
000001	Network Error
....	.....
012345	Network Error
67890	Server Error
24680	Client Error

I did try the query with just the examples I included in the original post and that produces the expected results, so I know the query works. However, given the code_names[Unique Code] table has more a lot more values than that is there some modification that should be made to the query?

[Ashish_Mathur]

Hi,

I have lost track of your requirement now.  Share a small representative dataset(s), describe the question and show the expected result.

[vijenkin]

Hi Ashish I have figured out the problem and solution. By utilizing FIRSTNONBLAN, the function was searching for the 1st matching instance of the Unique Code. As there are rows within the Unique Code table such as "0" and "0000" it would stop before it even got to the latter. As such I changed FIRSTNONBLANK to LASTNONBLANK and that has solved my problem. 

Thank you so much for providing the initial solution.  

[Ashish_Mathur]

You are welcome.