Forum Discussion

Anonymous's avatar
Anonymous
Not applicable
7 years ago
Solved

FirstNonBlank

Here's a firstnonblank() question again. 

 

This was probably answered before however I cannot find the rigth answer in all the power bi blog. 

 

I have three tables structured this way. 

 

Product table

product_id

 

Product_definition

Product_id

Definition_id

 

Definition table

definition_id

definition_description

 

My links are done correctly in my data model. 

 

So product table to product definition is a one to many. 

And Definition table to product definition is also a one to many. 

 

I want the first definition description from a product

I thought that 

firstDescription = Firstnonblank(Definition table[definition_description),0)

 

I always gets me the first of the entire production defintion. 

 

When I put a filter on it then I get the message that I need to add an aggregation (min,max....).

 

Thanks for the help

 

 

 

 

Need Help
  • v-lili6-msft's avatar
    v-lili6-msft
    7 years ago

    HI, Anonymous 

    You may need to change the cross filter direction from "Single" to "Both" between Definition table to product definition, then your formula may work well

     

    Best Regards,

    Lin

2 Replies

  • v-lili6-msft's avatar
    v-lili6-msft
    Community Support
    7 years ago

    HI, Anonymous 

    You may need to change the cross filter direction from "Single" to "Both" between Definition table to product definition, then your formula may work well

     

    Best Regards,

    Lin

  • Anonymous's avatar
    Anonymous
    Not applicable
    7 years ago

    Hi Anonymous 

    I am guessing a bit, as you havent provided any sample data.

    Try using LOOKUPVALUE() function. Something like:

    LOOKUPVALUE(
Firstnonblank(Definition table[definition_description),0),
Definition table[product_id], Product Table[product_id])

    OR use the relevant IDs from relevant tables.

     

    Thanks!
    A