cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
frano72
Helper IV
Helper IV

PQ int64 type conversion - explicit versus in Add.Column statement - different results (bug ?)

Hi,

 

You can perform a type conversion within an Add.Column statement without having to do a second step after.

 

Looks like this :

Table.AddColumn(#"Changed to Date", "ShiftIndex"each Text.Combine({Date.ToText([Day], "yyyy"), Date.ToText([Day], "MM"), Date.ToText([Day], "dd"), Text.From([Shift_ID], "en-AU")}), Int64.Type)
 
In the datflows UX you can see in first image below that it looks like a success.
 
However when refreshing the dataflow it gave a type conversion error.
 
I then added an additional step to convert the column to Int64 and the refresh worked.
 
If you look closely at the two images, you can see how the numbers are formatted differently (alignment and italics), however the type indicator at the top of the column shows the 123 logo.
 
Weird....
 
example1.jpgexample2.jpg
1 ACCEPTED SOLUTION
ImkeF
Super User
Super User

Hi @frano72 ,

my friend Lars Schreiber has a good explanation why this happens and how to avoid here: Ascribed types in M: why to generally avoid them (ssbi-blog.de)

 

Imke Feldmann (The BIccountant)

If you liked my solution, please give it a thumbs up. And if I did answer your question, please mark this post as a solution. Thanks!

How to integrate M-code into your solution -- How to get your questions answered quickly -- How to provide sample data -- Check out more PBI- learning resources here -- Performance Tipps for M-queries

View solution in original post

2 REPLIES 2
frano72
Helper IV
Helper IV

@ImkeF - and here i was congratulating myself on not writing bloated code !  Thanks for the explanation ! 

ImkeF
Super User
Super User

Hi @frano72 ,

my friend Lars Schreiber has a good explanation why this happens and how to avoid here: Ascribed types in M: why to generally avoid them (ssbi-blog.de)

 

Imke Feldmann (The BIccountant)

If you liked my solution, please give it a thumbs up. And if I did answer your question, please mark this post as a solution. Thanks!

How to integrate M-code into your solution -- How to get your questions answered quickly -- How to provide sample data -- Check out more PBI- learning resources here -- Performance Tipps for M-queries

Helpful resources

Announcements
Microsoft Build 768x460.png

Microsoft Build is May 24-26. Have you registered yet?

Come together to explore latest innovations in code and application development—and gain insights from experts from around the world.

charticulator_carousel_with_text (1).png

Charticulator Design Challenge

Put your data visualization and design skills to the test! This exciting challenge is happening now through May 31st!

Power BI Dev Camp Session 22 768x460.jpg

Check it out!

Mark your calendars and join us on Thursday, May 26 at 11a PDT for a great session with Ted Pattison!