ABAP_SYNTAX ... ASSOCIATION TO PARENT target $[ON $projection. cds_cond$] ...
What does it do? Defines a CDS to-parent association in the element list of an CDS abstract entity. The CDS to-parent association associates the current CDS entity, as a association source, with the association target target specified in the definition of the CDS to-parent association. CDS to-parent associations are specialized CDS associations and the same rules apply as described in topic CDS DDL - CDS View Entity, ASSOCIATION TO PARENT. There is only one exception to the rules described in topic CDS DDL - CDS View Entity, ASSOCIATION TO PARENT: If the association target of a to-parent association is another CDS abstract entity, then the ON condition is not mandatory and can be left out.
ABAP_EXAMPLE_VX5 The following DDL source code shows a CDS abstract entity that defines a CDS to-parent association to another CDS abstract entity: DDLS DEMO_CDS_ABSTRACT_CHILD ABAP_EXAMPLE_END
