Create unique ID based off of adjacent cell

kod2th3e

Board Regular
Joined
Apr 2, 2008
Messages
87
I am trying to use a forumla to look at the value in column b then create a unique id in column a based off of that value. In the table below I have a 3 digit value (in column B) that may be repeated any given number of times and if so I want the corresponding text in column "A" to equal that value with a "-1", "-2", etc after it depending how how many times the number has been repeated. Thanks in advance for any/all help.

[TABLE="class: grid, width: 150"]
<tbody>[TR]
[TD]Col A
[/TD]
[TD]Col B
[/TD]
[/TR]
[TR]
[TD]114-1
[/TD]
[TD]114
[/TD]
[/TR]
[TR]
[TD]114-2
[/TD]
[TD]114
[/TD]
[/TR]
[TR]
[TD]114-3
[/TD]
[TD]114
[/TD]
[/TR]
[TR]
[TD]114-4
[/TD]
[TD]114
[/TD]
[/TR]
[TR]
[TD]115-1
[/TD]
[TD]115
[/TD]
[/TR]
[TR]
[TD]115-2
[/TD]
[TD]115
[/TD]
[/TR]
[TR]
[TD]116-1
[/TD]
[TD]116
[/TD]
[/TR]
[TR]
[TD]116-2
[/TD]
[TD]116
[/TD]
[/TR]
[TR]
[TD]116-3
[/TD]
[TD]116
[/TD]
[/TR]
</tbody>[/TABLE]
 

Excel Facts

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Assuming your data begins in row 1, place this formula in cell A1 and copy down:
Code:
=B1 & "-" & COUNTIF(B$1:B1,B1)
 
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