PP output ;)

gistfile1.cpp

namespace table {
namespace table_ {
struct id {
   struct _name_t {
      static constexpr const char* _get_name() { return "id"; }
      template <typename T>
      struct _member_t {
         T id;
         T& operator()() { return id; }
         const T& operator()() const { return id; }
      };
      using _traits = sqlpp::make_traits<[(NOT_NULL, PRIMARY_KEY, AUTO_INCREMENT)]>;
   };
};

struct name {
   struct _name_t {
      static constexpr const char* _get_name() { return "name"; }
      template <typename T>
      struct _member_t {
         T name;
         T& operator()() { return name; }
         const T& operator()() const { return name; }
      };
      using _traits = sqlpp::make_traits<[(NOT_NULL, INDEX("name_index"), DEFAULT("any name"))]>;
   };
};

struct age {
   struct _name_t {
      static constexpr const char* _get_name() { return "age"; }
      template <typename T>
      struct _member_t {
         T age;
         T& operator()() { return age; }
         const T& operator()() const { return age; }
      };
      using _traits = sqlpp::make_traits<[(NOT_NULL, INDEX("age_index"), UNIQUE, COMMENT("some comments"))]>;
   };
};

} // ns table_

struct table: sqlpp::table_t<table, table_::id, table_::name, table_::age> {
   struct _name_t {
      static constexpr const char* _get_name() { return "table"; }
      template <typename T>
      struct _member_t {
         T table;
         T& operator()() { return table; }
         const T& operator()() const { return table; }
      };
   };
};

} // ns table

Quite impressive!

It is the release-style though, not the develop style. Please take a look here:
https://github.com/rbock/sqlpp11/blob/develop/tests/Sample.h

The changes should be fairly simple though.