Replicating vlookup in same table

[willboyes]

Hi - apologies if I'm missing something really obvious here, but I'm struggling to replicate a Vlookup in Power BI.

I have a table with 3 columns, the first is a consecutive ID value for each row, the second is a text string, and the third is another set of IDs which reference the first column.  I need to add another column which shows the text string from the second column, where the IDs in the first and third columns match. This is a simple Vlookup in Excel...

This table uses data from a Sharepoint Task app. The third column uses IDs to reference task hierarchy within a list, e.g. a task begins with one entry and then multiple sub-tasks, each referencing the first task. The data from Sharepoint only provides IDs, whereas I need to use the text strings (task names) in my report.

Any help would be much appreciated! Thanks

[Zubair_Muhammad · Accepted solution]

@willboyes

Try this Column

Column =
LOOKUPVALUE ( [Text String], [ID], [ID 2] )

[Zubair_Muhammad · Accepted solution]

@willboyes

Try this Column

Column =
LOOKUPVALUE ( [Text String], [ID], [ID 2] )

[willboyes]

Thanks very much - that's working now, not sure what I was doing wrong before!

[willboyes]

If I wanted to replicate that approach in the query editor, how could I go about it?  

[Zubair_Muhammad · Accepted solution]

@willboyes

With Power Query, you can do a self merge of the Table

[huguest]

Hello,

I have a similar situation within a table that has a lot of columns and data also coming from other tables in a pretty complex model.

When I add that Merge step, followed by an Expand step, it causes my refresh to get hung and my report will no longer update.

I tried creating a simplified copy of the table to Merge and Expand from, but I am still running into the same issue.  

Any idea/suggestion?

[willboyes]

Brilliant - worked first time!