In ABAP SQL, how would you retrieve the association field _Airline-Name of a CDS view?

To retrieve the association field _Airline-Name of a Core Data Services (CDS) view in ABAP SQL, the correct syntax uses the backslash as a prefix, resulting in _Airline-Name. This syntax is required to uniquely identify and reference association fields within the context of a CDS view.

Association fields in CDS views often need explicit indication for proper access within ABAP SQL. The backslash acts as a qualifier that informs the system that what follows is specifically related to an association field, thus ensuring that the query engine correctly processes the request to retrieve the relevant data.

Using the backslash avoids any ambiguity that might come from the inclusion of special characters and enables the correct interpretation of the identifier as a field belonging to an association. Other proposed formats lack the necessary syntax for accurately accessing the association field, thus resulting in incorrect retrieval methods for the data requested.