Specifies the internal hash identification number of the request
    to which this outline should be applied. Specify a 32-byte string
    representing a 32-hexadecimal character identification code. The
    internal hash identification code is generated by the optimizer
    whenever query outlines are created by the Oracle Rdb optimizer
    during optimization.

    You can optionally specify the MODE clause. You are required to
    specify the AS clause. You cannot specify the USING clause with
    the ID id-number clause.