Rename it accordingly.
env_user_str.emplace(std::string(env_user));
        const char * env_password = getenv("CLICKHOUSE_PASSWORD"); 
        if (env_password != nullptr)
            env_password_str.emplace(std::string(env_password));
        const char * env_quota_key = getenv("CLICKHOUSE_QUOTA_KEY"); 
        if (env_quota_key != nullptr)
            env_quota_key_str.emplace(std::string(env_quota_key));
        boost::program_options::options_description desc = createOptionsDescription("Allowed options", getTerminalWidth());
        desc.add_options()
            ("help",                                                            "produce help message")
            ("query,q",       value<std::string>()->default_value(""),          "query to execute")
            ("concurrency,c", value<unsigned>()->default_value(1),              "number of parallel queries")
            ("delay,d",       value<double>()->default_value(1),                "delay between intermediate reports in seconds (set 0 to disable reports)")
            ("stage",         value<std::string>()->default_value("complete"),  "request query processing up to specified stage: complete,fetch_columns,with_mergeable_state,with_mergeable_state_after_aggregation,with_mergeable_state_after_aggregation_and_limit")
            ("iterations,i",  value<size_t>()->default_value(0),                "amount of queries to be executed")
            ("timelimit,t",   value<double>()->default_value(0.),               "stop launch of queries after specified time limit")
            ("randomize,r",                                                     "randomize order of execution")
            ("json",          value<std::string>()->default_value(""),          "write final report to specified file in JSON format")
            ("host,h",        value<Strings>()->multitoken(),                   "list of hosts")
            ("port",          value<Ports>()->multitoken(),                     "list of ports")
            ("roundrobin",    "Instead of comparing queries for different --host/--port just pick one random --host/--port for every query and send query to it.")
            ("cumulative",    "prints cumulative data instead of data per interval")
            ("secure,s",      "Use TLS connection")
            ("user,u",        value<std::string>()->default_value(env_user_str.value_or("default")), "")
            ("password",      value<std::string>()->default_value(env_password_str.value_or("")), "")
            ("quota_key",     value<std::string>()->default_value(env_quota_key_str.value_or("")), "")
            ("database", value<std::string>()->default_value("default"), "")
            ("stacktrace", "print stack traces of exceptions")
            ("confidence", value<size_t>()->default_value(5), "set the level of confidence for T-test [0=80%, 1=90%, 2=95%, 3=98%, 4=99%, 5=99.5%(default)")
            ("query_id", value<std::string>()->default_value(""), "")