Google Sheets, how to count if text is set column is set to true

Question

I have a Google sheets with the following layout

Key Points  Category    Done
1     4       A          Yes
2     4       B 
3     1       B 
4     5       C          Yes
5     7       D          Yes
6     4       B 
7     2       C          Yes

I need a formula that can sum the points based on category if the Done is "yes". So the output should be

Points done    Category
7                C
4                A
7                D

Whch formula can I use for this? (I don't want to use pivot table)

Answer 1

try:

=QUERY({A2:D}; "select sum(Col2),Col3 where Col4 = 'Yes' group by Col3 label sum(Col2)''")