根据多个条件计算excel中的唯一值

Question

I've got a spreadsheet with 3 columns and want a formula to count the unique values in column A based on 3 criteria against B and C.

Below is an example of the data and desired output. E2:H2 is where the formula should go. The data contains blank values in column C. Column B is the result of a vlookup.

   A        B        C        D        E        F        G        H
1  Email    List     Date              1/1/19   1/2/19   1/3/19   1/4/19
2  1@1.com  X        1/1/19            2        1        1        0
3  2@2.com  Y        6/3/19
4  3@3.com  Z        2/2/18
5  1@1.com  X        9/1/19
6  4@4.com  X        5/2/19
7  1@1.com  X        
8  5@5.com  X        4/1/19
9  4@4.com  X        3/2/19
10 5@5.com  X        4/3/19

I want to find the number of unique values in column A where column B == X and column C falls within a particular month (provided by E1:H1).

I'd like to avoid using multiple pivot tables for each date range if possible.

I've tried two formulas which don't work.

{=SUM(IF((B2:B10="X")*(C2:C10>=E$1)*(C2:C10<F$1), 1 / COUNTIFS(B2:B10, "X", C2:C10, ">="&E$1, C2:C10, "<"&F$1, A2:A10, A3:A10)), 0)}

=SUMPRODUCT(((B2:B10="X")*(C2:C10>=E$1)*(C2:C10<F$1)) / (COUNTIFS(A:A, A2:A10, B2:B10, "X", C2:C10, ">="&E$1, C2:C10, "<"&F$1)))

I've seen similar questions in Stack Overflow but none worked for me.

Any help appreciated.

Answer 1

You could implement some BOOLEAN logic and check if MONTH and YEAR in C:C are the same as the lookup month and multiply that against your "x" criteria in column B:B :

Formula in E2 :

=SUM(--(FREQUENCY(IF((MONTH($C$2:$C$10)=MONTH(E1))*(YEAR($C$2:$C$10)=YEAR(E1))*($B$2:$B$10="X"),MATCH($A$2:$A$10,$A$2:$A$10,0)),ROW($A$2:$A$10)-ROW($A$2)+1)>0))

Note: It's an array formula and needs to be confirmed through Ctrl Shift Enter

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