CountifS multiple criteria distinct count

Question

I'm looking for a formula calculating : distinct Count + multiple criteria Countifs() does it but do not includes distinct count...

Here is an example.

I have a table on which I want to count the number of distinct items (column item) satisfying multiple conditions one column A and B : A>2 and B<5.

Image description here

Line  Item  ColA  ColB
1     QQQ    3     4
2     QQQ    3     3
3     QQQ    5     4
4     TTT    4     4
5     TTT    2     3
6     TTT    0     1
7     XXX    1     2
8     XXX    5     3
9     zzz    1     9

Countifs works this way : COUNTIFS([ColumnA], criteria A, [ColumnB], criteria B)

COUNTIFS([ColumnA], > 2 , [ColumnB], < 5)

Returns : lines 1,2,4,5,8 => Count = 5

How can I add a distinct count function based on the Item Column ? :

lines 1,2 are on a unique item QQQ

lines 4,5 are on a unique item TTT

Line 8 is on a unique item XXX

Returns Count = 3

How can I count 3 ?!

Thanks

Answer 1

Please enter this formula into a blank cell where you want to get the result, G2, for instance:

=SUM(IF("Tom"=$C$2:$C$20, 1/(COUNTIFS($C$2:$C$20, "Tom", $A$2:$A$20, $A$2:$A$20)), 0)), and then press Shift + Ctrl + Enter keys together to get the correct result, see screenshot:

Note: In the above formula, "Tom" represents the name criteria you want to count, C2:C20 represents the cells that include the name criterion, and A2:A20 represents the cells where you want to count the unique values.