def drop_entity_command(entity_type, entity_value):
    """drop entity

    :param entity_type: entity type
    :type entity_type: string. ex table, database
    :param entity_value: entity value. ex: database name
    :type entity_value: string
    :return: kql command string
    :rtype: string
    """
    return '.drop %s %s ifexists' % (entity_type, entity_value)