text: #include "duckdb.hpp"
  #include<iostream>
  #include <chrono>
  #include <thread>
  #include <fstream>
  
  using namespace duckdb;
  using namespace std;
  
  int main() {
  	DuckDB db(nullptr);
  	Connection con(db);
  
  	con.Query("CREATE TABLE nation(n_nationkey INTEGER, n_name VARCHAR, n_regionkey INTEGER, n_comment VARCHAR)");
  	con.Query("CREATE TABLE customer(c_custkey INTEGER, c_name VARCHAR, c_address VARCHAR, c_nationkey INTEGER, c_phone VARCHAR, c_acctbal DOUBLE, c_mktsegment VARCHAR, c_comment VARCHAR)");
  	con.Query("COPY nation FROM '../../duckdb_benchmark_data/tpch_nation.csv'");
  	con.Query("COPY customer FROM '../../duckdb_benchmark_data/tpch_customer.csv'");
  
  	auto result = con.Query("select n_name, n_comment from nation where n_nationkey<6;");
  	result->Print();
  }
  