count distinct values in spreadsheet

Question

I have a Google spreadsheet with a column that looks like this:

City
----
London
Paris
London
Berlin
Rome
Paris

I want to count the appeara

Answer 1

This is similar to Solution 1 from @JSuar...

Assume your original city data is a named range called dataCity. In a new sheet, enter the following:

    A                 | B
  ----------------------------------------------------------
1 | =UNIQUE(dataCity) | Count
2 |                   | =DCOUNTA(dataCity,"City",{"City";$A2})
3 |                   | [copy down the formula above]
4 |                   | ...
5 |                   | ...