Count unique value in series of data

jusho

New Member
Joined
Jun 2, 2014
Messages
33
Hello guys, i have a question. I need to count unique value in series of data.

Example in column B i have :
123
234
123
234
234

So i need a way to make the formula count result is 2. Because its contain only 123 and 234 but it duplicates.
How can i make that? if i use =count its result 5. I have you count until 1 million raw per day, its confused me:LOL:

Thanks in advance.
 

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