Average Only Filtered Matrix Data

Question

Hi All,
I am new to Reporting Services and I need help. I have a report that I have create below using matrix.
This is the SQL Query result :
YEAR    |          
MONTH            
|          
OUTLET       |          
QTY
2014    |          
7                     
|          
OUTLET A    |          
25
2014    |          
8                     
|          
OUTLET A    |          
25
2014    |          
9                     
|          
OUTLET A    |          
50
2014    |          
10                   
|          
OUTLET A    |          
75
and this is the Report Design :
Parameter  : Year : 2014
Parameter  : Month : 10
COLUMN     
|                      
MATRIX GROUP                        
| COLUMN                
OUTLET        |                      
MONTH                        
|          
3 MONTHS
|          
7          |          
8          |          
9          |          
AVERAGE   
OUTLET A     |          
25        |          
25        |          
50        |          
33.33333333
I use 2 Parameters, Year and Month. The matrix data group by Month, and in the column group properties I add three filters.
1 Filter for Year ([YEAR] = PARAMETERS!YEAR.VALUE), and 2 others for Month ([MONTH] < CINT(PARAMETERS!MONTH.VALUE) and [MONTH] >= PARAMETERS.MONTH - 3), because I only want to display data from previous month to 3 months before. For example, if I choose
Month 10, the matrix only display data from Month 7 to 9.
How do I count the average (put in “3 MONTHS AVERAGE” column) from Month 7 to 9 only and not from whole data? Please Advice.
Thanks,
Santony

Answer 1

Hi ,
YOu can try below ;
1. Select Matrix for this .
2 .Row -> Outlet
   Column-> Month
   Data -> Qty
3. Right Click on Column -> Insert column -> Outside Group Right
4. Use  Avg(Fields!Qty.value) in this added column
Use sql query for dataset
Select * from table
where DD.MONTH<@Month  and Year =@Year and Month >= month(dateadd(month,-3,getdate()))
Design Structure:
Output Screen
Thanks
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