SQL needed: sum over values by month

Question

i have an table with values like this:

count1   count2  count3  month
12        1       4       01/12/2011
6         5       4       23/12/2011
14                 


        

Answer 1

SELECT SUM(count1), SUM(count2), SUM(count3), MONTH(month)   
FROM Table  
GROUP BY trunc(month,'mm')

This will run in PL/SQL developer :)