cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
WSwanson
Frequent Visitor

Restricting Query by Username DAX Command in Direct Query

We have a Direct Query dataset in which we are trying to limit a table specifically by the domain name of the user pulling the report. This is being done in the Advanced Editor screen in the Query Editor using the Report Server solution.

The current query (when hard-coded) looks like this, and works fine:

 

let
Source = Sql.Database("Server", "Database",
[Query = "Select Id, DomainName From Database.dbo.Table Where DomainName = 'Hard Coded Domain'"])

 

in
Source

 

We are trying to make the 'Hard Coded Domain' piece be dynamic with the following code:

 

let
LoadingUser = USERNAME(),
Source = Sql.Database("SRVDB", "BI",
[Query = "Select EmployeeId, EmployeeName, DomainName From BI.Base.Employee Where DomainName = '"&LoadingUser&"'"])

 

in
Source

 

However, this produces the error: "Expression.Error: The import USERNAME matches no exports. Did you miss a module reference". Then it says "Expression.Error: The name USERNAME wasn't recognized. Make sure it's spelled correctly"

 

Has anyone ever seen this error before, and if so, is it even possible to use the USERNAME command to limit a query in Advanced Editor?

1 ACCEPTED SOLUTION

Accepted Solutions
Microsoft v-jiascu-msft
Microsoft

Re: Restricting Query by Username DAX Command in Direct Query

Hi @WSwanson,

 

USERNAME() is a DAX function. So you can't use it in the Query Editor that uses Power Query. Please vote on this idea. The workaround could be found here. I tested it with R code. It worked. You can try it like bellow.

let
    RScript = R.Execute("output <- read.table(text=system2(""whoami"", stdout=TRUE))"),
    output = RScript{[Name="output"]}[Value],

    Source = Sql.Database("SqlServerName", "contosoretaildw", [Query="select * from DimCustomer where lastname = '&output&'"])
in
    Source

Best Regards,

Dale

 

Community Support Team _ Dale
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

2 REPLIES 2
Microsoft v-jiascu-msft
Microsoft

Re: Restricting Query by Username DAX Command in Direct Query

Hi @WSwanson,

 

USERNAME() is a DAX function. So you can't use it in the Query Editor that uses Power Query. Please vote on this idea. The workaround could be found here. I tested it with R code. It worked. You can try it like bellow.

let
    RScript = R.Execute("output <- read.table(text=system2(""whoami"", stdout=TRUE))"),
    output = RScript{[Name="output"]}[Value],

    Source = Sql.Database("SqlServerName", "contosoretaildw", [Query="select * from DimCustomer where lastname = '&output&'"])
in
    Source

Best Regards,

Dale

 

Community Support Team _ Dale
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

Highlighted
Microsoft v-jiascu-msft
Microsoft

Re: Restricting Query by Username DAX Command in Direct Query

Hi @WSwanson,

 

Could you please mark the proper answer as solution or share the solution if it's convenient for you? That will be a big help to the others.

 

Best Regards!
Dale

Community Support Team _ Dale
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Helpful resources

Announcements
New Ranks Launched March 24th!

New Ranks Launched March 24th!

The time has come: We are finally able to share more details on the brand-new ranks coming to the Power BI Community!

‘Better Together’ Contest Finalists Announced!

‘Better Together’ Contest Finalists Announced!

Congrats to the finalists of our ‘Better Together’-themed T-shirt design contest! Click for the top entries.

Arun 'Triple A' Event Video, Q&A, and Slides

Arun 'Triple A' Event Video, Q&A, and Slides

Missed the Arun 'Triple A' event or want to revisit it? We've got you covered! Check out the video, Q&A, and slides now.

Top Solution Authors
Top Kudoed Authors