'Return the collection of updated parameters from this
execution.
Raises :class:`~sqlalchemy.exc.InvalidRequestError` if the executed
statement is not a compiled expression construct
or is not an update() construct.'

def last_updated_params(self):

    if (not self.context.compiled):
        raise exc.InvalidRequestError('Statement    is    not    a    compiled    expression    construct.')
    elif (not self.context.isupdate):
        raise exc.InvalidRequestError('Statement    is    not    an    update()    expression    construct.')
    elif self.context.executemany:
        return self.context.compiled_parameters
    else:
        return self.context.compiled_parameters[0]
