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SHDJason's avatar
SHDJason
Icon for Advocate II rankAdvocate II
10 years ago

Matching a single value to a possible value in another table?

Hi. I have been trying to figure this out and I finally give up. 

 

Here is the situation:

 

I have a table of website traffic with a long list of full URLs.

I have another very short table with list of root domains that we are focusing on.

 

I would like to create a new column in the first table that flags where the URL matches the second table. It does not need to be an exact match, just a root domain match.

 

The problem that I am stuck on is that the FIND function only accepts a single value to match to, it does not iterate through a list of possible matches.

 

FIND("single expression", [URL]).  Where I need "single expression" to iterate through a list of possible values.

 

I thought nesting the FIND function inside a FILTER function to compare one row at a time would work, but I get stuck on one value and it does not iterate through the list of possible matches.

 

All the iterating functions that I could find are good for math, but not for text or logic functions.

 

Maybe there is a way to do this in M using the Text.Contains function?

 

I'm sure there is a simple way to do this that I'm just not understanding. I appreciate any help. Thanks. 

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2 Replies

  • Anonymous's avatar
    Anonymous
    Not applicable
    10 years ago

    You can do this in dax.

     

    You can use FIRSTNONBLANK combined with a filter:

     

    FIRSTNONBLANK(FILTER(VALUES('Table to Search'[Field]),SEARCH('Table to Search'[Field],'Table with Main Data'[Field],1,0)),1)

    • SHDJason's avatar
      SHDJason
      Icon for Advocate II rankAdvocate II
      10 years ago

      Thanks Anonymous!  

       

      I actually woke up in the middle of the night with this solution:

       

      IF(COUNTROWS(FILTER(Mentions,IFERROR(SEARCH([Source],[Url]),BLANK())))>1,TRUE(),FALSE())

       

      Which works, but I think yours is more elegant!  

       

      For some reason I need to wrap my SEARCH and FIND functions in IFERRROR because I keep getting errors on the not found value.