Skip to main content
Showing results for 
Search instead for 
Did you mean: 

The ultimate Microsoft Fabric, Power BI, Azure AI & SQL learning event! Join us in Las Vegas from March 26-28, 2024. Use code MSCUST for a $100 discount. Register Now

Frequent Visitor

Test current executing context in M language

Hello everyone.

I have a powerBi report which loads data from an Excel file, classicaly.

But due to network problems (very slow from time to time), I'd like to get the Source Excel file either from local filesystem (when executing on PowerBi desktop), and from a sharepoint directory when executing on the cloud. 

But I don't want to have 2 different .pbix.

So I need in my PowerQuery M, when defining the Source origin of my Excel data file, to dynamically test the context of execution (local PC or sharepoint).

Is it possible to do that ?

Thank you in advance if you have an idea.

Super User
Super User

Hi @ORDR ,


You can add two sources into your query, then control them with a toggle query, something like this:

// toggleQuery
    Source = 1

// queryToToggle
    source1 = connectToSharePointSource,
    source2 = connectToFileSystemSource,
    selectSource = if toggleQuery = 1 then Source1 else Source2,
    otherTransformations = Function(selectSource, each doStuff)



Now accepting Kudos! If my post helped you, why not give it a thumbs-up?

Proud to be a Datanaut!

Helpful resources

Fabric Community Conference

Microsoft Fabric Community Conference

Join us at our first-ever Microsoft Fabric Community Conference, March 26-28, 2024 in Las Vegas with 100+ sessions by community experts and Microsoft engineering.

February 2024 Update Carousel

Power BI Monthly Update - February 2024

Check out the February 2024 Power BI update to learn about new features.

Fabric Career Hub

Microsoft Fabric Career Hub

Explore career paths and learn resources in Fabric.

Fabric Partner Community

Microsoft Fabric Partner Community

Engage with the Fabric engineering team, hear of product updates, business opportunities, and resources in the Fabric Partner Community.

Top Solution Authors
Top Kudoed Authors