# Excel - COLUMN Function Problem - Expert Solution

Question description:
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I need to count unique, non-numeric values from a dynamic column.
Solved by D. L. in 16 mins
This is the chat thread from the real Excelchat help session. It contains no private user information.
Excelchat Expert 10/08/2017 - 08:12
Do you have an example of the data and what you are looking for?
Excelchat Expert 10/08/2017 - 08:15
Without more detail, I would say that you should use a countif approach.
Excelchat Expert 10/08/2017 - 08:15
=countif("Dynamic Column name",value to count).
User 10/08/2017 - 08:23
yes one second
User 10/08/2017 - 08:24
from this list i need to count how many unique values there are
User 10/08/2017 - 08:24
from a2 down
Excelchat Expert 10/08/2017 - 08:24
I would use, if(countif() approach.
User 10/08/2017 - 08:25
the problem is the column length and data are constantly changing
User 10/08/2017 - 08:25
=SUMPRODUCT(1/COUNTIF('Shipping data'!C2:C218,'Shipping data'!C2:C218))
User 10/08/2017 - 08:25
that is the current formula i am using
Excelchat Expert 10/08/2017 - 08:25
What is the issue with that formula?
User 10/08/2017 - 08:25
but it does not account for changes
Excelchat Expert 10/08/2017 - 08:25
You mean additions or changes in general?
User 10/08/2017 - 08:26
many times the data will be from say c2:c450, so i need it to automatically count all unique values in all of column c
User 10/08/2017 - 08:26
not just c2:c218
Excelchat Expert 10/08/2017 - 08:26
Can you change your formula to C2:C?
Excelchat Expert 10/08/2017 - 08:26
That'll account for all of C.
User 10/08/2017 - 08:26
it returns an error
Excelchat Expert 10/08/2017 - 08:27
hmm. You can use counta i believe.
Excelchat Expert 10/08/2017 - 08:27
This will likely take another session. Can you please post a new session with Ex_20 in the description?
User 10/08/2017 - 08:28
ok

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