FETCH -+---------------->-----------------+-+- <cursor-name> ++
         +> fetch-orientation-clause FROM --+ +> <parameter> --+|
        +--------------------------<----------------------------+
        ++------------------->---------------------------+----->
         +--> INTO -+-+-> <parameter> ------------+-+-+--+
         |          | +-> <qualified-parameter> --+ | |
         |          | +-> <variable> -------------+ | |
         |          +--------- , <------------------+ |
         +--> USING DESCRIPTOR <descriptor-name> -----+

  fetch-orientation-clause =

   -----+--> NEXT  --------------------------------------+--->
        +--> PRIOR --------------------------------------+
        +--> FIRST --------------------------------------+
        +--> LAST ---------------------------------------+
        +--> RELATIVE ----> simple-value-expression -----+
        +--> ABSOLUTE ----> simple-value-expression -----+