Excel 如果 b 中的值大于 0，则计算 a 中的唯一值

Question

I have 2 columns. I want to count the unique values from A if the corresponding value from b is grather than 0

A	B
John	2
Mary
John	2
John
Sally	2
Terry	1
Terry

In the above example the result will be 3 (john + sally + terry). I am using excel 2016. I saw same example with Unique but this function is not available. Is there any other way of achieving this without using pivot?

Answer 1

You can use this complex formula:

=SUM(IF(FREQUENCY(IF(LEN(IF($B$1:$B$7>0,$A$1:$A$7,""))>0,MATCH(IF($B$1:$B$7>0,$A$1:$A$7,""),IF($B$1:$B$7>0,$A$1:$A$7,""),0),""),IF(LEN(IF($B$1:$B$7>0,$A$1:$A$7,""))>0,MATCH(IF($B$1:$B$7>0,$A$1:$A$7,""),IF($B$1:$B$7>0,$A$1:$A$7,""),0),""))>0,1))

To better understand it, I suggest you break it up into it's component parts and examine the results (or use the Formula evaluation tool).

In some earlier versions of Excel, you may need to "confirm" this array-formula by holding down ctrl + shift while hitting enter . If you do this correctly, Excel will place braces {...} around the formula as observed in the formula bar

Answer 2

In Office 365 this could be done like this: =COUNTA(UNIQUE(FILTER(A:A,B:B>0)))