I need to list unique values of 12 columns in a different sheet columns.

Like sheet 1 has A column.

I need to list the unique values of all 12 columns in Sheet 2 to Sheet1 A column.


enter image description here

want to list like this:

want to list like this


Quick and dirty way :


(Source : organizing google-sheets data range into single column)
However, care must be taken not to exceed 50k characters when using concatenate. If the case arises, simply break the formula into several pieces or use arrays.


Edit : I have just learned that this problem can now be solved in an even simpler way. =unique(flatten(A1:F12))

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  • The quick and dirty way looks slower (more characters to type) than the other way :D – Rubén Sep 16 '19 at 17:03
  • Yeah, I didn't give it a second thought, that was pretty dumb :o. But I still think solution 1 is easier because there's only an unique range to type. I'm confused and lost :) – pjmg Sep 16 '19 at 23:16

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