Write Your First CUSTOM M FUNCTION in Power BI
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- čas přidán 7. 07. 2024
- In this video I show how to write your own custom M FUNCTIONS in Power BI. It will enable you to do work more efficiently in the query editor (Power Query).
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⏱️ TIMESTAMPS ⏱️
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0:00 Intro
1:08 Write your first custom M Function
2:35 Different ways to invoke a function
3:46 Assigning a data type to the input parameters
4:43 Adding multiple input parameters and transformations
7:48 Understanding how Power Query executes M Functions
9:14 Are M Functions really necessary?
11:12 End
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This is a very well made video! Crisp explanations, well thought out content, intro/body/conclusion, great editing, and the quiet jazz in the background made me want a coffee all the more! Oh, and to practice writing m functions :)
Hey Bas, the way you explain is just SUPERB, thanks a LOT!!!
SUPER SUPER SUPER LIKE!!!!... You made it easy .. I was completely afraid to touch this area but you really made it easy!
Very well done
Awesome Mohammad :) im very happy you think so!
I follow the second group Baz. Very nice video... hats off to you...
Excellent Tip. Make the data model more efficient
Great example, thanks.
Of course I am in the second group as well, this is an awesome example of how custom functions are working! thank you very much for this video!!
I like your dialect - is this a dutch dialect?
Very useful tip! Thanks for sharing Bas! Love the way you explain ☕
thank you!!! 😀
Right on point! Thank you.
Please create special playlist for m language from beginner to advanced
Absolutely love your videos 👍
Thank you sooo much Shawn :) You made my day
Thank you so much, Bas! Love how you've made it so simple! A quick question, is the performance better using custom function? I.e., if I were to refresh the query, will both methods take pretty much the same amount of CPU time? Thanks agian.
Good video,iit all looks so eay when other people do it., I find custom function syntax quite tricky, as in.
( A , B )=> A + B
or
let
Addup = (A, B ) =>
A + B
in
Addup
and that's before you start needing nested let / in statements.
clear, thank you
Excellent Info, Many thanks
thank you very much Charles! 😀
Thanks :) Very useful
Glad it was helpful 😃
Thanks
Very nice video!!
I prefer the second one 😅👍
hahaha me 2 ;) especially in the morning 😂
Thanks for a helpful video. Subscribe already.
Super thanks!
Nice trick but……..do you store those functions in a kind of library/repository? E.q how do you make those functions maintainable including the different versions ?
?
Hello, I have a scalar valued function in SQL. I need to pass SUM of certain columns from Power BI to get a final result which needs to be displayed. May I know how to achieve that?
Hi is there any to render custom font on client computer without installing that custom font to there pc or laptop .plz show me a way need help 🆘🙏🙏
7:12 Thinking... How to make second petameter as Optional?
Hi Tks, can you provide a example with multiple tables as parameter.
🙂 yes, will do in one of my next videos
Hey bro, lets say I have a column with emails. Is it possible to filter by default the data based on who logs in without RLS? Maybe using a calculated table??
tricky one, maybe you could build a table with users / roles / entitlements and create an inactive relation and then active it in your dax measures. I don't know of a more elegant way of solving it.
What you describe is exactly the point of RLS. It's relatively easy. Set up a security role with the email column = USERPRINCIPALNAME(). If the user does not appear in the email list, everything will be filtered out.
Thanks, what Im looking for is more a default filter so users can see other's information but displaying theirs by default
why the M code does not follow a sequential order? I find it hard to understand. thanks!
This is quite confusing for a brand new person and I'd like to advise why instead of just leaving it at that. Every time a new query or function is shown, there is nothing showing how is related to the table. The table already had the 'strength' and 'nrbeans' value, but that wasn't advised of when the functions or invokes were being displayed, therefore I'm trying to understand if when the variables are shown are they referencing the column names from the table or are they new variables. Very lost due to that one detail.
How to add 2 numeric columns using custom column in POWER QUERY EDITOR.
=[column1] + [column2]
@@HowtoPowerBI thanks for your quick response.
Team Calculeted column
Nice explanation... But do barristas really count the beans?! 😝
haha 😂 , the ones that have seen this video will! Don't be surprised next time you visit starbucks