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SHDJason
Advocate II
Advocate II

How to update a table based on values in another table?

I have 2 tables. I need to update some of the values in table A based on values in table B.  This is part of a bigger function.

 

Table A has two columns. Source and Tactic.

 

Table B has one colum. Source

 

If Table A source = one of the values in Table B, then Tactic should be X else Y.

 

How to do this? Do I need to iterate through all the values in Table B each time? There are many thousands of rows. 

 

Note: Tables A and B are updated independantly.

 

Thanks for your help.

1 ACCEPTED SOLUTION
Greg_Deckler
Super User
Super User

Take a look at my article here, it should address your issue.

 

http://community.powerbi.com/t5/Community-Blog/Good-Ol-VLOOKUP-The-Ultimate-Guide-to-Lookups-in-Powe...

 


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1 REPLY 1
Greg_Deckler
Super User
Super User

Take a look at my article here, it should address your issue.

 

http://community.powerbi.com/t5/Community-Blog/Good-Ol-VLOOKUP-The-Ultimate-Guide-to-Lookups-in-Powe...

 


Follow on LinkedIn
@ me in replies or I'll lose your thread!!!
Instead of a Kudo, please vote for this idea
Become an expert!: Enterprise DNA
External Tools: MSHGQM
YouTube Channel!: Microsoft Hates Greg
Latest book!:
The Definitive Guide to Power Query (M)

DAX is easy, CALCULATE makes DAX hard...

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