Mastering OLAP Reports: Parameterized Grouping - Page 7

September 23, 2008

Add a New Dataset to Support the Proposed Report Parameters

Now we will add a new dataset to support the proposed parameter picklists (the parameter selections that the information consumers see at report run time).

1.  Click the Data tab, once again.

2.  With the Dataset selector, select <New Dataset ...>, as shown in Illustration 28.

Illustration 28:  Select <New Dataset ...>
Illustration 28: Select <New Dataset ...>

The Dataset dialog opens, defaulted to the Query tab.

3.  Type the following into the Name box :

RowGroup

4.  In the Data source box just below, select AdventureWorks (shared).

5.  In the Query string box, type (or cut and paste) the following query:

SELECT 
   'Product Category' AS ParameterCaption, 
   'Category' AS ParameterValue
UNION
SELECT 'Product Subcategory'  AS ParameterCaption, 
 'Subcategory' AS ParameterValue
UNION
SELECT 'Product'  AS ParameterCaption, 
 'Product' AS ParameterValue

The Dataset dialog appears, with our input, as depicted in Illustration 29.

Illustration 29:  The Dataset Dialog with Our Input ...
Illustration 29: The Dataset Dialog with Our Input ...

6.  Click OK to accept our input and to dismiss the Dataset dialog.

We are taken to the Query pane, where our newly crafted query appears as shown in Illustration 30.

Illustration 30:  Our Query in the (Partially Depicted) Query Pane
Illustration 30: Our Query in the (Partially Depicted) Query Pane

7.  Click the Run (!) button to test the query.

Data is returned, and appears in the Data Pane as depicted in Illustration 31.

Illustration 31: Data is Returned and Appears in the Data Pane
Illustration 31: Data is Returned and Appears in the Data Pane

We will see how the ParameterCaption and ParameterValue fields are employed when we set up the two report parameters in the steps that follow.








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