Solved

Excel 2013 Counting Rows per record

Posted on 2014-02-03
2
302 Views
Last Modified: 2014-02-20
All,
I am working with a spreadsheet with ~60,000 rows.  Each row has data pertaining to one column (Column A).  I want to count the number of times a value in Column B is associated with a unique value in Column A.  And a value in Column B can appear multiple times per unique value in Column A; we only want to a Column B value one time per unique Column A value.

For instance:
Column A     Column B
  New York      Bob
  New York      Sue
  New York      Steve
  New York      Bob
  Chicago        Mary
  Chicago        Mary
  Chicago        Mary

In Column C, we like to have the # of unique values of column B associated with each unique value of column A, so the result would look like this:

Column A     Column B   Column C
  New York      Bob               3
  New York      Sue                
  New York      Steve
  New York      Bob
  New York      Sue
  Chicago        Mary              1
  Chicago        Mary
  Chicago        Mary

Can this be done in Excel?  And if it can, can someone tell us how?
Thanks!
0
Comment
Question by:NPRGadmin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 52

Assisted Solution

by:Rgonzo1971
Rgonzo1971 earned 250 total points
ID: 39829630
Hi,

pls try this array formula

'=IF(A2=A1,"",SUM(IF(FREQUENCY(IF($A$2:$A$10=A2,MATCH($B$2:$B$10,$B$2:$B$10,0)),ROW($A$2:$A$10)-ROW(A2)+1),1)))

Open in new window


array formulas need to be entered using the key
combination of CTRL,SHIFT,ENTER

Regards
ArrayFormula.xlsx
0
 
LVL 23

Accepted Solution

by:
NBVC earned 250 total points
ID: 39829706
Since you have around 60,000 rows, perhaps using a helper column might improve efficiency over using array formulas....

Assuming your data is in columns A:B, then in C2 enter formula:

=COUNTIFS(A$2:A2,A2,B$2:B2,B2)

copied down.  (you can hide this column, if desired)

in D2 then:

=IF(A2=A1,"",COUNTIFS(A:A,A2,C:C,1))

copied down.
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Excel can be a tricky bit of software to get your head around. Whilst you’ll be able to eventually get to grips with the basic understanding of how to get by, there are a few Excel tips that not everybody will even know about let alone know how to d…
If you need to forecast numbers -- typically for finance -- the Windows and Mac versions of Excel 2016 have a basket of tools to get the job done.
This Micro Tutorial demonstrate the bugs in Microsoft Excel for Mac with Pivot Charts.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question