Query Limitations and Workarounds

The following limitations and workarounds apply to TDV when it is used with the BEx adapter:

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The adapter cannot perform aggregate operations.

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A query that uses the Conditions on Selected Characteristics feature of BEx returns an exception in Studio.

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If a query contains execution steps that cannot be pushed to the data source, the query as a whole is executed in TDV.

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In many cases you can express a BEx query as a parameterized query so that it always pushes its parameters.

Application Views for SAP

The organization of the views and folders mirrors that of SAP’s Business Object Repository (BOR). Field names are aliased to provide human-readable names. In some cases several objects in BOR are synthesized in a single query to produce a more detailed, unified view of the data.

A common pattern employed in application views is that of List and Details. Views with names ending in “List” return a minimal set of columns that serve to uniquely identify an object. The identifiers are passed as arguments into a corresponding view, its name ending in “Details,” to produce a more extensive set of columns.

Filter Data from Application Views

There are two ways to filter data from SAP using application views: using a filter provided by SAP itself, or by filtering within TDV. Both methods are used by application views depending on the view and the capabilities of SAP.