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The view entity doesn’t require the annotation since client handling takes place implicitly.The view entity doesn’t require the annotation The view entity doesn’t require the annotation true, because the filter is implicitly and automatically compared.

Join scarr on scarr.carrid = spfli.carridĭefine view entity demo_cds_scarr_spfli_2 The following example compares a CDS DDIC-based view with a CDS view entity: CDS DDIC-based view The syntax SELECT * to select all elements from the data source is supported in CDS DDIC-based views, but not in CDS view entities.Īdditional features, such as typed literals to enhance type safety, and optimized buffer handling, are planned for future releases.

Domain fixed values in front of literals cannot be defined in CDS view entities.

CDS view entities don’t support name lists.

In DDIC-based views it is possible to assign alternative element names to elements of a SELECT-list using a name list.

Here are some examples (but the list is not exhaustive):

Some features that haven’t been widely used are no longer supported in view entities.

Operand positions, such as the WHERE-clause, allow a greater variety of operands.

Situations that previously required a view stack can now be implemented within a single view.

Expressions can be nested within each other.

Annotations are checked to ensure that only annotations defined as CDS objects in a CDS annotation definition can be used.

Overhauled extension concept with CDS view entity extends (EXTEND VIEW ENTITY) offers much faster activation performance, see ABAP Core Data Services: New syntax for extending CDS entities | SAP Blogs for further details.

Overhauled buffer handling by means of CDS tuning objects offers more flexibility (see Buffering CDS View Entities | SAP Blogs for further details).

For example, client handling takes place implicitly and doesn’t require any development effort. Of course, a view entity has an SQL view on the database, but now the intermediate DDIC view is not needed any more. Please note that the name of the annotation is a bit misleading.

The annotation is not required and each view has only one name. Here are some principal ways in which CDS view entities differ from CDS DDIC-based views: Although very similar, CDS view entities are easier to use, and offer many small improvements and enhanced features. Key differences between DDIC-based views and CDS view entitiesĬDS view entities are a new and improved version of CDS DDIC-based views.

Stricter syntax checks indicate problematic situations more explicitly, for example, annotation checks.

Optimization and simplification of syntax.

Improved performance during view activation.

No additional ABAP Dictionary view is created on activation.But they offer several advantages over the “classic” CDS DDIC-based views, such as the following: They have evolved from CDS DDIC-based views, serve the same purpose and have the same structure as their predecessor. They are defined using the statement DEFINE VIEW ENTITY. Since release 7.55, CDS view entities are available. This kind of CDS view was first released with release 7.40, SP05 and it was for many years the only available kind of CDS view. Motivation: why has SAP developed a new type of CDS view?Ī CDS DDIC-based view is defined using the statement DEFINE VIEW. Outlook: transition from DDIC-based views to CDS view entities.Key differences between DDIC-based views and CDS view entities.Motivation: why has SAP developed a new type of CDS view?.This blog post provides the following information: And it has come to replace the “classic” CDS DDIC-based views that have been around for years. With ABAP release 7.55, a new type of CDS view is available: in official terminology, it’s called CDS view entity.