14.08.2015 John Doe 100
14.08.2015 Bruce Willis 100
09.08.2015 Keanu Reaves 100
15.08.2015 John Doe 250
18.08.2015 John Doe 150
18.08.2015 Keanu Reaves 200
20.08.2015 Keanu Reaves 150
27.08.2015 Bruce Willis 100
06.09.2015 Bruce Willis 100
06.09.2015 Bruce Willis 100
11.09.2015 Keanu Reaves 100
13.09.2015 John Doe 200
14.09.2015 Bruce Willis 100
18.09.2015 John Doe 300
19.09.2015 Keanu Reaves 400
I have a spreadsheet that looks like this (3 columns), and I am trying to create a sum of third column based on the first and second ones. I would like to see the total for user 'John Doe' in 8th month. So far i came up with this:
=sumif(if(month(A:A)=8),"John Doe",C:C)
but it returns 0 (it should actually return 500). Any idea on how should I tweak this?