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

Get Fabric Certified for FREE during Fabric Data Days. Don't miss your chance! Request now

Reply
Anonymous
Not applicable

Remove certain part of string based on value from other column

Hello all, 

I have issue with removing certain part of string value in my column. 

Example: 

Table "Document"

DocumentNumberDocumentSourceCategory
61-2300-B-PID-2350-01Master Document
61-2300-B-PID-2350-01-07812Project Working Copy
61-2300-B-PID-2350-01-07917DProject Working Copy
61-2300-B-PID-2350-01-07917Project Working Copy
61-2300-B-PID-2350-01-14398Project Working Copy
61-2300-B-PID-2350-01-00209Project Working Copy
61-2300-B-PID-2350-01-07812-21Project Working Copy
61-2300-B-PID-2350-01-05209DProject Working Copy
61-2300-B-PID-2350-01-07812-21D1Project Working Copy
61-2300-B-PID-2350-01-05908Project Working Copy
61-2300-B-PID-2350-01-07812DProject Working Copy
61-2300-B-PID-2350-01-05209Project Working Copy
61-2300-B-PID-2350-01-03210DProject Working Copy
61-2300-B-PID-2350-01-07812-21PProject Working Copy
61-2300-B-PID-2350-01-07812-21DProject Working Copy
61-2300-B-PID-2350-01-03210Project Working Copy

 

Desired New Column that will identify us the Master Document Number of this copies: 

 

DocumentNumberDocumentSourceCategoryDocument cut
61-2300-B-PID-2350-01Master Document61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07812Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07917DProject Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07917Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-14398Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-00209Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07812-21Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-05209DProject Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07812-21D1Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-05908Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07812DProject Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-05209Project Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-03210DProject Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07812-21PProject Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-07812-21DProject Working Copy61-2300-B-PID-2350-01
61-2300-B-PID-2350-01-03210Project Working Copy61-2300-B-PID-2350-01

 

Thank you!

 

1 REPLY 1
some_bih
Super User
Super User

Hi @Anonymous one possible solution could be to create new column in Power query using M function Text.Start

(I recognize pattern from your picture: first 21 character should retrive):

New column Document cut code is

= Table.AddColumn(#"Promoted Headers", "Document cut", each Text.Start([DocumentNumber],21))

I hope this help

some_bih_0-1685446646790.png

 





Did I answer your question? Mark my post as a solution!

Proud to be a Super User!






Helpful resources

Announcements
Fabric Data Days Carousel

Fabric Data Days

Advance your Data & AI career with 50 days of live learning, contests, hands-on challenges, study groups & certifications and more!

October Power BI Update Carousel

Power BI Monthly Update - October 2025

Check out the October 2025 Power BI update to learn about new features.

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.