Why are there no INSERT examples, especially with Boost.Hana? about ozo HOT 7 CLOSED

namespace hana = boost::hana;
using namespace hana::literals;

//...

my_row row;

//...

constexpr auto keys = hana::keys(row);

constexpr auto fields = hana::fold(keys, ""_s, [](auto state, auto x) {
    if constexpr (hana::is_empty(state)) {
        return x;
    } else {
        return state + ", "_s + x;
    }
});

auto query = "INSERT into my_table("_SQL 
    + ozo::make_query_text(fields) 
    + ") VALUES ("_SQL 
    + ozo::make_query_builder(hana::unpack(keys, [&](auto ...xs) {
        return hana::make_tuple(ozo::make_query_param(std::cref(hana::at_key(row, xs)))...);
    }))
    + ");"_SQL;

ozo::request(conn_info[io], query, ozo::into(res),
    [&](ozo::error_code ec, auto conn) {
    //...
});

#include <iostream>
#include <string_view>


namespace hana = boost::hana;
namespace asio = boost::asio;
using namespace std::chrono_literals;
using namespace ozo::literals;
using namespace boost::hana::literals;

struct my_row {
  std::int64_t id;
  std::string name;
};

BOOST_HANA_ADAPT_STRUCT(my_row, id, name);

int main(int argc, char **argv) {
  my_row row = {2, “ozo”};
 
  constexpr auto keys = hana::keys(row);
  
  constexpr auto fields = hana::fold(keys, ""_s, [](auto state, auto x) {
    if constexpr (hana::is_empty(state)) {
      return x;
    } else {
      return state + ", "_s + x;
    }
  });

  auto demo = "INSERT into my_table("_SQL +
              ozo::make_query_text(fields) +
              ") VALUES "_SQL +
              ozo::make_query_builder(hana::unpack(keys, [&](auto ...xs) {
                return hana::append(
                    hana::insert(hana::intersperse(
                        hana::make_tuple(ozo::make_query_param(std::cref(hana::at_key(row, xs)))...),
                        ozo::make_query_text(BOOST_HANA_STRING(","))), 0_c, ozo::make_query_text(BOOST_HANA_STRING("("))),
                    ozo::make_query_text(BOOST_HANA_STRING(")")));
              })) +
              " returning id;"_SQL;

  std::cout << std::string_view(hana::to<const char*>(demo.build().text)) << std::endl;

  asio::io_context io;
  const ozo::connection_info connection_info(argv[1]);
  ozo::connection_pool_config connection_pool_config;
  connection_pool_config.capacity = 1;
  connection_pool_config.queue_capacity = 10;
  connection_pool_config.idle_timeout = std::chrono::seconds(60);
  connection_pool_config.lifespan = std::chrono::hours(24);

  ozo::connection_pool connection_pool(connection_info, connection_pool_config);

  asio::spawn(io, [&] (asio::yield_context yield) {
    ozo::error_code ec;
    ozo::rows_of<std::int64_t> result;
    const auto connection = ozo::request(connection_pool[io], demo, 1s, ozo::into(result), yield[ec]);
    for (auto value : result)
      std::cout << "row: " << std::get<0>(value) << std::endl;
  });
  io.run();
  
  return 0;
}