cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Highlighted
Advocate I
Advocate I

List of M functions that work with Direct Query?

I know there's a list of DAX functions that are supported in Direct Query mode (vs only import mode).

Is there a similar list of M functions?

I keep trying to use some of the functions to make some calculated columns, but as soon as I use some of them, I get the message that it's only supported in Import Mode.  It would be nice to know ahead of time what is possible and what is not.

Thanks.

2 REPLIES 2
Highlighted
Microsoft
Microsoft

Re: List of M functions that work with Direct Query?

This depends on what data source type you are using, and is a complex question, as generally, Power Bi will try to run to code to fold your query into a native query, but if it fails for whatever reason (not supported, code bug, ect...) it will fall back to importing the data up to that point and do the operations directly, which will break Direct query. For example, a connector (the code behind processing the data source) might support List.Max on number columns, but not text columns.

Advocate I
Advocate I

Re: List of M functions that work with Direct Query?

I'm using SAP Hana.

 

Would be nice if there were a table then that covered the major sources that allow DQ (there aren't that many) showing which functions worked with which sources.

Of course, I know that's a lot of work. Still if anybody ahs something like that, it would be extremely helpful.

Helpful resources

Announcements
August 2020 Community Challenge: Can You Solve These?

August 2020 Community Challenge: Can You Solve These?

We're excited to announce our first cross-community 'Can You Solve These?' challenge!

Community Blog

Community Blog

Visit our Community Blog for articles, guides, and information created by fellow community members.

Upcoming Events

Upcoming Events

Wondering what events you could join or have an event to promote yourself? Check out our Upcoming Events.