How to: Map Query Parameters to Variables in a Data Flow Component
When you configure the OLE DB source to use parameterized queries, you can map the parameters to variables.
The OLE DB source uses parameterized queries to filter data when the source connects to a data source.
To map a query parameter to a variable
In Business Intelligence Development Studio, open the Integration Services project that contains the package you want.
In Solution Explorer, double-click the package to open it.
Click the Data Flow tab, and then, from the Toolbox, drag the OLE DB source to the design surface.
Right-click the OLE DB source, and then click Edit.
In the OLE DB Source Editor, select an OLE DB connection manager to use to connect to the data source, or click New to create a new OLE DB connection manager.
Select the SQL command option for data access mode, and then type a parameterized query in the SQL command text pane.
In the Set Query Parameters dialog box, map each parameter in the Parameters list to a variable in the Variables list, or create a new variable by clicking <New variable>. Click OK.
Only system variables and user-defined variables that are in the scope of the package, a parent container such as a Foreach Loop, or the Data Flow task that contains the data flow component are available for mapping. The variable must have a data type that is compatible with the column in the WHERE clause to which the parameter is assigned.
You can click Preview to view up to 200 rows of the data that the query returns.
To save the updated package, click Save Selected Items on the File menu.