Define SQL Server Aggregates

Use the SQL Server Aggregate Editor in a SQL Server physical model to define a user-defined function whose implementation is defined in a class of a .NET Framework assembly.

To define an aggregate in SQL Server

Click Target - SQL Server, Aggregates on the Model menu.
The SQL Server Aggregate Editor opens.
Select the aggregate in the Navigation Grid that you want to define and work with the following options:
Click New on the toolbar to create a new aggregate. Use the Enter filter text box to filter a very large list of aggregates to quickly locate the one that you want to define.
Name
Displays the aggregate name. You can change the aggregate name in this field.
Schema
Specifies the schema for the aggregate. Select a schema from the drop-down list or click the New icon to open the SQL Server Schema Editor and create one.
Return Data Type
Specifies the data type of the return value. Select a data type from the drop-down list.
Generate
Generates SQL during forward engineering. Clear the check box if you do not want to generate SQL.
Click the General tab and work with the following options:
Assembly
Specifies the assembly that binds with the aggregate function. Select an assembly from the drop-down list or click the New icon to open the SQL Server Assembly Editor and create one.
Class Name
Specifies the name of the class.
Parameters
Specifies the parameters owned by the aggregate.
Physical Data Type
Specifies the physical data type of the aggregate parameter. Select a data type from the drop-down list.
(Optional) Click the Comment tab and enter any comments that you want to associate with the object.
(Optional) Click the Where Used tab to view where the object is used within the model.
(Optional) Click the UDPtab to work with user-defined properties for the object.
(Optional) Click the Notestab to view and edit user notes.
(Optional) Click the Extended Notes tab to view or edit user notes.
Click Close.
The aggregate is defined and the SQL Server Aggregate Editor closes.