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ABENCDS_COND_EXPR_CASE - CDS COND EXPR CASE

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- cond_expr, CASE

Rules for conditions cond_exp in a complex case distinction of a CDS view:

• All comparison operators are allowed.

• lhs expects a field of a data source data_source.

• A field of a data source data_source, a literal with optional domain prefix, a parameter, a session variable, or a built-in function can be specified for rhs (with the exception of the operator LIKE).

• A field of a data source can be specified using a path expression path_expr.element, as long as the CDS associations of the expression do not have any abstract association targets and the expression is not polyvalent:

• The cardinality of the contained CDS associations is "to 1".

• The path expression only contains filter conditions with addition 1:.

element can be used to specify an element of the association target of the last CDS association of the path.

• Other expressions and function calls are not allowed.

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