ABAP Keyword Documentation →  ABAP - Dictionary →  ABAP CDS in ABAP Dictionary →  ABAP CDS - Data Definitions →  ABAP CDS - DDL for Data Definitions →  ABAP CDS - DEFINE VIEW →  ABAP CDS - SELECT →  ABAP CDS - SELECT, Operands and Expressions →  ABAP CDS - cond_expr →  ABAP CDS - cond_expr, Operands 

ABAP CDS - cond_expr, ON, CDS Association

Rules for conditions cond_exp in an ON condition of a CDS association of a CDS view:

• All relational operators are allowed.

• A field of one of the two data sources data_source of the CDS association can be specified for lhs.

• A field of both data sources data_source of the CDS association, a literal with optional domain prefix, a parameter, or a session variable can be specified for rhs (with the exception of the operator LIKE).

• A field of the source data source can also be specified by an alternative element name (defined using AS) of the current CDS view.

• At least one comparison for equality between a field of the initial data source and a field of the target data source of the CDS association must be performed.

• No path expressions or other expressions or function calls can be specified.

Other versions: 7.31 | 7.40 | 7.54