The ORD-MIN function returns a value that is the ordinal position in the argument list of the argument that contains the minimum value.
The function type is integer.
All arguments must be of the same class, except that a combination of alphabetic and alphanumeric arguments is allowed.
The returned value is the ordinal number that corresponds to the position of the argument-1 having the least value in the argument-1 series.
The comparisons used to determine the least-valued argument-1 are made according to the rules for simple conditions. For more information, see Conditional expressions.
If more than one argument-1 has the same least value, the number returned corresponds to the position of the leftmost argument-1 having that value.