ENTMF 

The USUBSTR Function

The USUBSTR function returns a substring of a character string argument that is encoded in UTF-8.

The function type is alphanumeric.

General Format

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Arguments

argument-1
Must be of class alphabetic or alphanumeric. argument-1 must contain valid UTF-8 encoded characters.
argument-2
Must be an integer that is greater than zero. It represents the starting position of a substring in argument-1.
argument-3
Must be an integer that is greater than or equal to zero. It represents the length of a substring in argument-1.
Note: The sum of argument-2 and argument-3 minus one must be less than or equal to ULENGTH(argument-1).

If argument-2 = 3 and argument-3 = 2, the returned value is an alphanumeric character string that contains two UTF-8 characters in argument-1, starting with the third character.

Return Value

The returned value is an alphanumeric string that is a substring of argument-1.