SAP LOGEXP RULES EXPR CHAR documentation, setup help and example usage

ARTICLE

rel_exp - Comparing String Expressions
String expressions can be used as operands in comparison expressions with

relational operators for all data types

relational operators for character-like data types

It is possible to compare a string expression with a single operand with any elementary data type or with another string expression.
If one of the operands in a comparison is a string expression, the comparison type is always string . If necessary, single operands are converted
to the type string before the comparison.

Note
A string expression cannot be specified as the operand of a predicate expression .

Example
This example demonstrates the effect of different comparison types. The first comparison is true, since the character-like operand is converted to the type of the numeric operand (in accordance with the rule for comparing character-like data types ) and the numeric value is compared. The second comparison is false, since the numeric operand is converted to the type string of the string expression and the internal representation of the code page used is compared.
IF `02` > 1.
WRITE / 'yes'.
ELSE.
WRITE / 'no'.
ENDIF.

IF |02| > 1.
WRITE / 'yes'.
ELSE.
WRITE / 'no'.
ENDIF.

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