hi all,

 

now,I have a composite_key like this,

 struct leader_key
  : boost::multi_index::composite_key<
  channel_info,
  BOOST_MULTI_INDEX_MEMBER(channel_info, boost::uint64_t, st_md5_),
  BOOST_MULTI_INDEX_MEMBER(channel_info, boost::uint32_t, st_rank_),
  BOOST_MULTI_INDEX_MEMBER(channel_info, boost::uint8_t, st_degrees_),
  BOOST_MULTI_INDEX_MEMBER(channel_info, boost::uint8_t, st_lan_type_)
  >
 {
 };

I used "md5, rank, degrees, lan_type" to query.

I want to the result like this,

equal to md5,

less than rank

degrees from small to large