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sedkimic's avatar
sedkimic
Frequent Visitor
3 years ago
Solved

RSCustomDaxFilter Documentation

Is there documentation anywhere on the RSCustomDaxFilter function used in Report Builder?  Specifically, I'm interested in what (if any) other accepable options are for the second parameter besides E...
"DAX"
Paginated Reports
  • OwenAuger's avatar
    OwenAuger
    3 years ago

    Hi again,

    I did get this working yesterday, but today tried to retrace my steps and realised I'd forgotten some of the fiddly details, so just replying now 😅

     

    In short, yes, you should create a query parameter and set its value to that of the existing report parameter (in Dataset Properties > Parameters).

    Also, you should avoid Query Designer (in my experience).

     

    For completeness, the full set of steps I followed:

    1. Create a new Dataset
    2. In the Dataset Properties dialog box, in Parameters section, click Add.
    3. Enter Parameter Name
      This can be the same name or a different name from the existing report parameter, as it is scoped to the query.
    4. For Parameter Value, select the existing report parameter from the dropdown.
    5. Go to Query section of Dataset Properties dialog box.
    6. Specify Name & Data source
    7. Don't click Query Designer. Enter or paste DAX query into Query dialog box, incorporating the query parameter defined above.
    8. Click Validate Query to confirm it works, then OK.

    I have to give credit to this Reddit comment where the author followed similar steps.

     

    Regards,

    Owen

OwenAuger's avatar
OwenAuger
Super User
3 years ago

sedkimic 

I have not been able to find the official documentation on RSCustomDaxFilter 😞

 

However, based on this article, it appears that the only possible conditions for RSCustomDaxFilter are:

  • EqualToCondition
  • NotEqualToCondition

But if you have a single-valued parameter that you are using as the lower-bound of a filter, then you can use syntax like this in the Report Builder DAX query:

MyTable[MyColumn] >= @MyParameter

This assumes "MyParameter" is configured correctly and the type corresponds to MyColumn etc.

 

Regards,

Owen 

leathard's avatar
leathard
Advocate I
2 years ago

Additionally, RSCustomDaxFilter for multi-value parameters is essentially syntactic sugar for this FILTER pattern:

 

    FILTER( 
        VALUES('MyTable'[Filter Column]), 
        PATHCONTAINS(@MyParameter, 'MyTable'[Filter Column])
    ),

 

as long as you first change the dataset parameter to be a string that joins the parameter array items using the pipe character:

 

=join(Parameters!MyParameter.Value, "|")

and once you have the DAX you can change it as needed.