Skip to main content
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

July 28 - August 9 | Final Round of the Power BI Dataviz World Championships. This is your chance. Learn more

Reply
hassanh2
Helper I
Helper I

Add custom column - query

‎07-24-2022 04:14 AM

Hello, I was adding a custom column to my model to map "item code" column to get the for example last 5 digits based on certain prefix in the source column ( using left(Item code column, 5) and in other instances I had to I use "mid" as well as "right" but I got an error message: 'left' name is misspelled!

 

Aren't these (Left, mid and right) not accepted in query of custom column ?

 

Labels:
Message 1 of 3
712 Views
0
1 ACCEPTED SOLUTION
Vijay_A_Verma
Most Valuable Professional
Most Valuable Professional

‎07-24-2022 04:25 AM

These are valid in DAX not in Power Query. In PQ, following are the equivalents

MID - Text.Middle

RIGHT - Text.End, Text.EndsWith

LEFT - Text.Start, Text.StartsWith

View solution in original post

Message 2 of 3
695 Views
2 REPLIES 2
v-jingzhang
Community Support
Community Support

‎07-26-2022 08:45 PM

Hi @hassanh2 

 

DAX and M languages are two different languages in Power BI. They have different functions and syntax. 

Power Query M function reference 

DAX function reference 

 

Can you show your expected result with some dummy data so that we can provide an example solution based on that? 

 

Best Regards,
Community Support Team _ Jing

Message 3 of 3
628 Views
0
Vijay_A_Verma
Most Valuable Professional
Most Valuable Professional

‎07-24-2022 04:25 AM

These are valid in DAX not in Power Query. In PQ, following are the equivalents

MID - Text.Middle

RIGHT - Text.End, Text.EndsWith

LEFT - Text.Start, Text.StartsWith

Message 2 of 3
696 Views

Helpful resources

Announcements
FabCon and SQLCon Barcelona 2026

FabCon & SQLCon – Barcelona 2026

Join us in Barcelona for FabCon and SQLCon, the Fabric, Power BI, SQL, and AI community event. Save €200 with code FABCMTY200.

Fabric Community Sticker Design Challenge Barcelona Carousel

Fabric Community Sticker Challenge - Barcelona 2026

If you love stickers, then you will definitely want to check out our community sticker challenge, Barcelona edition!

July Power BI Update Carousel

Power BI Monthly Update - July 2026

Check out the July 2026 Power BI update to learn about new features.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.

View All