ABAP Keyword Documentation → ABAP − Reference → Program Flow Logic → Expressions and Functions for Conditions → log_exp - Logical Expressions → rel_exp - Predicates
rel_exp - Predicate Expressions
Other versions:
7.31 | 7.40 | 7.54
Syntax
... {operand IS [NOT] INITIAL}
| {ref IS [NOT] BOUND}
| {oref
IS [NOT] INSTANCE OF}
| {<fs> IS [NOT] ASSIGNED}
| {para
IS [NOT] SUPPLIED} ...
Effect
A predicate expression uses the predicate operator IS to produce a
truth value from the state of an operand.
Notes
- With the exception of
INSTANCE OF, no operands of the possible predicate expressions are general expression positions. No predicate expression can be applied to a calculation expression.
- The predicate expression
IS [NOT] REQUESTEDis obsolete and was replaced byIS [NOT] SUPPLIED.