$HIGH Function

The $HIGH function returns the highest value in the alphanumeric collating sequence.

This function has the following format:

$HIGH

You can use $HIGH as a source field in a MOVE or SET statement. It assumes the same length as its associated target.
You can use $HIGH in a conditional expression as the object of a comparison. It assumes the same length as the value to which it is compared.
$HIGH has a length of 1 when used as the argument of $STRING or in a LIST statement.
You can use $HIGH as an alphanumeric expression in the WHEN clause of a SELECT construct. $HIGH assumes the length of the SELECT subject.

Example

Assume that A, B, and C are 16‑character alphanumeric fields.

SET A = $HIGH       : returns 16 X'FF

	SET B = $LOW        : returns 16 X'00'
	SET C = $SPACES     : returns 16 X'40'