ABAP Keyword Documentation → ABAP − Reference → Program Flow Logic → Expressions and Functions for Conditions → log_exp - Logical Expressions → rel_exp - Comparison Expressions
rel_exp - Relational Operators
Depending on the operands that are compared with each other, four groups of relational operators for relational expressions can be distinguished:
- Relational operators for all data types 
 
 =,EQ,<>,NE,>,GT,<,LT,>=,GE,<=,LE
 BETWEEN
 IN
- Relational operators for character-like data types 
 
 CO,CN,CA,NA,CS,NS,CP,NP
- Relational operators for byte-like data types 
 
 BYTE-CO,BYTE-CN,BYTE-CA,BYTE-NA,BYTE-CS,BYTE-NS
- Relational operators for bit patterns 
 O,Z,M
Other versions: 7.31 | 7.40 | 7.54
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rel_exp - Relational Operators for All Data Types
rel_exp - Relational Operators for Character-Like Data Types