How to show data output in SSRS

Question

Below is my simply query.  I need to use Matrix SSRS format. I will put "Region" in "row" column, Header will use "Customer_Requested_Date" field, and will use "Amount" in the data session.
The data output in the "Header" field will show January.....until December (current month is December).  In the Amount field under "December" (current month), I need to compute the formula like "Customer_Request_Month"
< =  Current Month".  (I do not have the field name called Current Month, need to get a Date/Time function to display Current Month).
How I can come up the data output under December Header field to show the current Amount in that section?
November, 2014
December,2014
Region
Amount
CRD Month < = Current Month
Select
Customer_Request _Date,
Customer_request_Month,
Transaction_Type,
Region,
Amount
 From Table
Thanks,
Josephine
Josey Tang

Answer 1

Hi Josey,
According to your descritption, you want to show the current month in your tablix. Right?
In Reporting Services, we can use the Now() and datepart() function to get the current month. Please use the expression below:
=Datepart("m",Now())
In this scenario, since you want to show the amount of current month within the column group, you need to create another dataset which always show the data of current month. Then you can use lookup() function to get the amount value from the current dataset
based on the Region. Please follow the steps below:
Create a same dataset(DataSet2) using your query. Add a filter on this dataset. Make Fields!Customer_request_Month.Value
=
Datepart("m",Now())
Then add a column inside of column group, using the expression below:
=lookup(Fields!Region.Value,Fields!Region.Value,Fields!Amount.Value,"DataSet2")
The design and result look like below:
Reference:
Expression Examples (Report Builder and SSRS)
Lookup Function (Report Builder and SSRS)
If you have any question, please feel free to ask.
Best Regards,
Simon Hou