How do you run the COUNTUNIQUE function on several columns?
Running COUNTUNIQUE(A1:C3) gives me 8, because there are 8 unique values, I want it to return 3 because I have 3 unique rows.
| A | B | c |
-----------------
| a | 1 | |
| b | 2 | foo |
| b | 2 | foo |
| c | 3 | bar |
P.S. I use Google spreadsheets, but I guess it's the same in Excel and LibreOffice Calc
