What does it do? Checks the result set of a subquery. The relational expression is true if the result set of the subquery defined by the clauses subquery_clauses contains at least one row. The expression is possible for any result sets that can be defined using subquery clauses subquery_clauses. The set operators UNION , INTERSECT, and EXCEPT can be used to combine the result sets of multiple subqueries. In this case, special rules query_clauses apply when specifying clauses.
Latest notes: The specified columns in the SELECT list of the subquery are not important for EXISTS. Therefore, explicit lists are not useful. It is recommended that one literal is specified as the only column. NON_V5_HINTS ABAP_HINT_END
