ABAP Keyword Documentation → ABAP − Reference → Processing Internal Data → Character String and Byte String Processing → Expressions and Functions for String Processing → String Functions → Common Parameters of Character String Functions
sub - Substring
... ( ... sub = substring ... ) ...
substring is used to pass a character string whose characters are to be found or inserted.
substring is a
character like expression position. Only arguments with elementary types can be specified.
If a character-like data object with a fixed length is specified, any trailing blanks are ignored.
The behavior displayed when an empty string is specified in
substring depends on the function in question.
The result of the following function call is 2.
DATA(result) = count( val = 'axaxa' sub = 'x' ).