**Question description:**

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I have a few columns of text in columns "A" and "B" I want to compare those columns to columns "L" and "M" in order to determine if these recurring names come up. I am trying to determine if a donor has donate from year to year and can't figure this out.

Solved by O. L. in 21 mins

This is the chat thread from the real Excelchat help session. It contains no private user information.

Excelchat Expert
16/07/2018 - 03:07

Welcome, thank you for choosing Got It Pro-Excel! I'll be glad to assist you with your concern. :)

Excelchat Expert
16/07/2018 - 03:09

From your post, it seems you wanted to match columns A and B to that of columns L and M, and determine the recurring names. Is this correct?

Excelchat Expert
16/07/2018 - 03:11

Hello, if it's okay, may I kindly as if you can upload in here the file you're working on. This is for us to have a better grasp of the situation and deliver the formula directly to your file. Thanks!

User
16/07/2018 - 03:11

Yes, let me show you what I mean

Excelchat Expert
16/07/2018 - 03:11

Yes please do. Thanks!

User
16/07/2018 - 03:14

so what I am trying to do is compare the first and last names of the donors from these different columns (on my sheet there are much more) to determine if the donors have donate each year for a specified period of time. Can you teach me how to do this?

Excelchat Expert
16/07/2018 - 03:14

Sure thing! Let me first lay down the formula in the sample data and we can discuss how I did it. :)

Excelchat Expert
16/07/2018 - 03:18

Okay, already done. Unfortunately, in our sample data, no one donated for both 2017 and 2018.

Excelchat Expert
16/07/2018 - 03:19

Let me provide you an explanation of the formulas used.

Excelchat Expert
16/07/2018 - 03:19

First would be the CONCATENATE formula that combines the first name and last name to create a full name.

User
16/07/2018 - 03:20

I have a small background in using python so i actually recognized that formula

Excelchat Expert
16/07/2018 - 03:20

We see that in columns C and M. There would be weird combinations such as cell C4 since in the First name, there are two persons, and the last name denotes the charity foundation.

Excelchat Expert
16/07/2018 - 03:20

Oh nice! :)

Excelchat Expert
16/07/2018 - 03:20

So we could then discuss the IF and COUNTIF combo on columns D and N.

User
16/07/2018 - 03:21

yes perfect

User
16/07/2018 - 03:21

i just need to understand what in the inner parrenthesis

User
16/07/2018 - 03:21

($C:$C,$M3)>0

Excelchat Expert
16/07/2018 - 03:21

Basically, the COUNTIF would count how many instances in a range did a criteria occur. So if you look at cell D2, the countif would be COUNTIF($M:$M,$C2). This means that it will count how many times in column M:M did C2 occur.

Excelchat Expert
16/07/2018 - 03:22

The COUNTIF($M:$M,$C2)>0 would check if the COUNT will be more than 0 or not.

Excelchat Expert
16/07/2018 - 03:22

If it is more than 0, then we know that the name donated last year. Thus, it will return a "Yes". Otherwise, it will return a "No"

Excelchat Expert
16/07/2018 - 03:23

That's the logic behind the IF statement.

User
16/07/2018 - 03:23

so what i just did if i copied for the 3rd data table to the far right would that also read yes

User
16/07/2018 - 03:24

because it appeared in the previous column

User
16/07/2018 - 03:24

okay i think i get it now

Excelchat Expert
16/07/2018 - 03:25

The formula you should copy in this case is the one in column N. Columns D and N will have different references. :)

Excelchat Expert
16/07/2018 - 03:25

But with same logic.

Excelchat Expert
16/07/2018 - 03:25

Is there anything else that I can assist you regarding the solution provided? :)

Excelchat Expert
16/07/2018 - 03:26

Btw, you can download a copy of the document preview by going to File > Download as > Microsoft Excel (.xlsx). The formulas will be downloaded as well. :)

User
16/07/2018 - 03:27

You are a god among us all ty so much

Excelchat Expert
16/07/2018 - 03:27

Thanks for the appreciation! :)

Excelchat Expert
16/07/2018 - 03:27

Nice! You can now end the session via the button on your upper right (sorry, can't do it from our end). I would also appreciate it if you can leave a great feedback after this.Thanks so much for using Got it pro and have a nice day! :)

User
16/07/2018 - 03:27

last question, are there resources online that I can learn to develop to the point where i can do these things independent of help?

Excelchat Expert
16/07/2018 - 03:28

Oh, I'm not entirely sure but you may check youtube tutorials and such. I just gained my knowhow with Excel thru my previous works and lots of practice. :)

User
16/07/2018 - 03:28

gotcha ty anyway

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