Use raw ptr

[dmgcodevil]

i disabled field validation for now.

[dmgcodevil]

  for (int i = 0; i < 1000000; ++i) {
    std::unordered_map<std::string, Value> data = {
        {"name", Value("User" + std::to_string(i))},
        {"age", Value(20 + (i % 50))},
        {"city", Value(i % 2 == 0 ? "NYC" : "SF")},
        {"salary", Value(50000 + (i * 100))}};

    db_->create_node("User", data).ValueOrDie();
  }

  // Test simple WHERE performance
  auto start = std::chrono::high_resolution_clock::now();

  Query query = Query::from("u:User")
                    .where("u.age", CompareOp::Gt, 40)
                    .and_where("u.city", CompareOp::Eq, "NYC")
                    .build();

  auto result = db_->query(query);

Output:

query took: 7764 ms
Result rows: 280002