ctsqlCompare() compares two data objects of a given field type.
dtype the data type of the two objects that are being compared
buffer1 the buffer containing the first object to be compared
length1 the length in bytes of the first data object
buffer2 the buffer containing the second object to be compared
length2 the length in bytes of the second data object
result receives the result of the comparison. A negative value indicates first object is less than second object. A positive value indicates first object is greater than second object. A zero indicates both objects are equal.
