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ABENCDS_PROJ_VIEW_PATH_EXPR - CDS PROJ VIEW PATH EXPR

ABENCDS_PROJ_VIEW_PATH_EXPR - CDS PROJ VIEW PATH EXPR

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- path_expr, Transactional Query

... $[source.$]_assoc1$[ parameters$]$[filter$] ...

Effect

A path expression in the CDS DDL is a sequence of CDS associations separated by periods (.) whose names are specified using assoc1, assoc2, and so on. The rules for path expressions in CDS projection views are similar to path expressions in CDS view entities, see topic CDS DDL - CDS View Entity, path_expr with the following differences:

  • The filter of a path expression of a CDS projection view can't define a join type. It can only define a cardinality and a filter condition as described in topic CDS DDL - CDS Projection View, filter.
  • The result set of the CDS projection view must be the same as the result set of the projected entity. Therefore, the target cardinality of each traversed association must be 1. This can be achieved by using a filter condition.
  • The keyword LOCALIZED can be used to display text elements in the user's logon language. All previous association paths must be filtered to 1.






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