On Wed, 9 Nov 2005 16:32:40 -0800, "DTTODGG"
wrote:

Hello-

Is there a simple way to count the number of different entries in a column?

ex. I have multiple rows for the same "salesperson". I have many
salespersons. I want to know how many salespersons I have.

I guess I'm counting non-duplicate entries in a column.

Thank you,
I'm learning lots!

Depends on whether or not there are blanks in the range.

If no blanks:

=SUM(1/COUNTIF(A1:A10,A1:A10))

entered as an *array* formula.

If there may be blanks, even if they are at the end of the range, then:

=SUM(IF(FREQUENCY(IF(LEN(A1:A100)0,MATCH(A1:A100, A1:A100,0),""),
IF(LEN(A1:A100)0,MATCH(A1:A100,A1:A100,0),""))0, 1))

also entered as an *array* formula.

To enter an *array* formula, after typing or pasting the formula into the
formula bar, hold down <ctrl<shift while hitting <enter. Excel will place
braces {...} around the formula.


--ron