Google Spreadsheet Sum Column 1 if criteria matches in Column 2

Question:

( by Absolute Zero )

Google Chrome / Windows 7

I am trying to find a formula that will add numbers in Column B ONLY if they match criteria in Column A.

A sample would be:

Column A    Column B

AVAT           1

ML               1

ML               1

AVAT           1

AVAT           1

AVAT           1

ML =           2

AVAT =       4

Please let me know how I can achieve this, I have been struggling with it for awhile.. thank you!

Solution:


Have a look at the following screenshot of my Spreadsheet:

I have the data in Column A and B.

I have the value "ML" in Cell D1 and I have the following formula in Cell E1:

=sumif(A:A;D1;B:B)

I have the value "AVAT" in Cell D2 and I have the following formula in Cell E2:

=sumif(A:A;"AVAT";B:B)

And if you want to total for all the values in Column A, then you can also get the summing of Column B using group by query. I have the following formula in Cell H1:
=query(A:B;"select A,sum(B) where A<>'' group by A label sum(B) '' ")


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