using Excel functions to count unique values in one column based on match in other column? -


i have excel question - there method of using functions count of unique values of column based on matching column's contents particular data interest? example, suppose have 2 columns of data.

a           | b toothbrush  | aaa shampoo     | aaa toothbrush  | aaa toothbrush  | bbb conditioner | ccc toothbrush  | bbb shampoo     | ccc toothbrush  | ccc toothpaste  | ccc toothpaste  | aaa toothbrush  | aaa shampoo     | bbb

i generate, on separate tab, 2 columns display following information, example:

c           | d toothbrush  | 3 toothpaste  | 2 shampoo     | 3 conditioner | 1

column d number of unique customers each of 4 products.

is there way in column d using formula composed of sum, if, countif, etc.?

thanks in advance , please let me know if can clarify further.

since others may not particular readily available tools decide avoid, create pivottable "add data data model" rows , b values, change count of b distinct count of b.

so25755209 example


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