Skip to content

ABAP Keyword Documentation →  ABAP - Reference →  Program Flow Logic →  Expressions and Functions for Conditions →  log_exp - Logical Expressions →  log_exp - Boolean Operators and Parentheses 

log_exp - NOT

Other versions: 7.31 | 7.40 | 7.54


... NOT log_exp ...


The negation of a logical expression log_exp using NOT creates a new logical expression that is false if the logical expression log_exp is true and vice versa.


  • The operator NOT is a stronger join than AND, OR, and EQUIV.
... NOT operand NOT IN seltab ...
The first NOT is a Boolean operator that negates a comparison expression. The second NOT is a part of the comparison expression withe the relational operator IN. This is made clear using parentheses around the comparison expression:
... NOT ( operand NOT IN seltab ) ...