I would like to create one formula that will give me the desired result, which is number of unique IDs with “0” Amount. Below I have two formulas, but since the whole document has a lot of data, I would like to have one formula.

first formula counts how many times ID occurs in column A

=COUNTIFS($A$2:$A2,A2,$G$2:$G2,”0″)

second formula counts how many unique IDs have “0” Amount in column G

=COUNTIFS(K2:K18,”1″,G2:G18,”0″)

sample of raw data:

```
ID Amount
100075738 0
100075738 0
27258 312.76
27300 961.59
27372 316.96
27578 769.3
30609 0
33163 573.16
36245 0
36249 3365.6
42026 1563.8
47065 673.12
48966 442.33
100007640 1287.16
100010436 2615.55
100026622 692.44
100028235 1548.4
```

If you have access to the new ** Dynamic Array** formulas in excel you can use:

```
=COUNT(UNIQUE(FILTER(A2:A18,B2:B18=0)))
```

If you don’t have access to those, you can use this ** Array** formula instead

*(Must be confirmed with*

`CTRL`+`SHIFT`+`ENTER`)```
=SUM(--(FREQUENCY(IF(B2:B18=0,MATCH(A2:A18,A2:A18,0)),ROW(A2:A18)-ROW(A2)+1)>0))
```

Output of both are below in photo along with formula used next to output for reference

Tags: excelexcel