One Name Per ID

I have a table like this:

BranchNumber  BranchName                  IDField
1900                     AMP123                          1234
1900                     American 123                 6549
1900                     Am 1 2 3                          98651
1901                     Jones and Company      32
1901                     Jones Co                           1656
1901                     Jones Co. Inc.                   65749

I want to pull one BranchName for each Branch Number.  Using the IDField to pull the Name of the most recent ID

BranchNumber  BranchName
1900                     Am 1 2 3  
1901                     Jones Co. Inc.  

Using SQL Server 2012.
Thanks for all help!
Scott WilliamsData AnalystAsked:
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Jim HornMicrosoft SQL Server Data DudeCommented:
Good luck with that, and by that I mean what is your criteria for determining if BranchName is a duplicate?  

For example, if there's a Jones Co. in Reno, Nevada, and a Jones Co. Inc. in New York City, then they are really unique branches and not duplicates.

Are there other fields anywhere that can be used to determine duplicates besides BranchName ?
Saurabh Singh TeotiaCommented:
You can use this query...

select tb1.branchnumber,tb2.branchname
from table1 tb2
inner join
(select branchnumber,max(idfield) as id
from table1
group by branchnumber) tb1 on and tb1.branchnumber=tb2.branchnumber

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Scott PletcherSenior DBACommented:
From SQL 2005 on, ROW_NUMBER() is usually much better for that type of request:

SELECT BranchNumber, BranchName, IDField --,...
    FROM table_name
) AS derived
    row_num = 1
Jim HornMicrosoft SQL Server Data DudeCommented:
>Using the IDField to pull the Name of the most recent ID
Missed that part.  Looks like you have two good answers to work with.
Scott WilliamsData AnalystAuthor Commented:
Both solutions are best.  Now to decide.  Thank you very much!
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