yogi_Compute Sum Of Quantities Of Products Listed In Sheet2 By Month From The Transactions Listed In Sheet1

                                         Google Spreadsheet   Post  #1615
Yogi Anand, D.Eng, P.E.      ANAND Enterprises LLC -- Rochester Hills MI     www.energyefficientbuild.com.   Apr-25-2014
post by ANTONINO L: (https://productforums.google.com/forum/#!category-topic/docs/spreadsheets/L3igpL-dKyY)
FILTER O FORMULA FOR PROBLEM

Who can help me to solve this problem: 

I would like to sum ​​the number of packages in a column having a specific code for each month. 

How can I do?

Thanks

SHEET 1				SHEET 2
DATI				SUMMARY
COD	DATA	Q.TA'		COD	DESCR	Q.TA' GEN	Q.TA' FEB	Q.TA' MAR
64	01/03/2014	5		64	PROD1			5
2227	13/02/2014	4		2227	PROD2		10	5
2227	11/03/2014	5		3339	PROD3
3456	09/01/2014	13		3456	PROD4	13
2227	27/02/2014	6

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