pqxx::result Query(std::string sql) {
        pqxx::work Work(*conn);
        pqxx::result res=Work.exec(sql);
        Work.commit();
        return res;
    }
pqxx::connection* conn;
conn=new pqxx::connection(
                "host=postgres "
                "password=пароль "
                "user=diskuser "
                "dbname=diskdb");
Query("CREATE TABLE IF NOT EXISTS files ("
                      "id varchar(255), "
                      "parentId varchar(255), "
                      "url varchar(255), "
                      "size bigint, "
                      "updated timestamp, "
                      "updates json"
                  ");"
        );