%TIMESTAMP built-in function converts the value of an expression from character, numeric, or date data to type timestamp. If no expression is specified, the current system timestamp is returned.
%TIMESTAMP ((Expression {, *ISO | *ISO0}))
Optional. Expression can be character, numeric, or date data to be converted to type timestamp.
Optional. This is the timestamp format.
If no Expression is specified, the current system timestamp is returned. Regardless of the input format, the resulting value is *ISO format.